<SEC-DOCUMENT>0000776867-21-000012.txt : 20210629
<SEC-HEADER>0000776867-21-000012.hdr.sgml : 20210629
<ACCEPTANCE-DATETIME>20210629083621
ACCESSION NUMBER:		0000776867-21-000012
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		12
CONFORMED PERIOD OF REPORT:	20210629
ITEM INFORMATION:		Other Events
FILED AS OF DATE:		20210629
DATE AS OF CHANGE:		20210629

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WHITE MOUNTAINS INSURANCE GROUP LTD
		CENTRAL INDEX KEY:			0000776867
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				942708455
		STATE OF INCORPORATION:			D0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08993
		FILM NUMBER:		211055814

	BUSINESS ADDRESS:	
		STREET 1:		23 SOUTH MAIN STREET
		STREET 2:		SUITE 3B
		CITY:			HANOVER
		STATE:			NH
		ZIP:			03755
		BUSINESS PHONE:		603 640 2200

	MAIL ADDRESS:	
		STREET 1:		23 SOUTH MAIN STREET
		STREET 2:		SUITE 3B
		CITY:			HANOVER
		STATE:			NH
		ZIP:			03755

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WHITE MOUNTAINS INSURANCE GROUP INC
		DATE OF NAME CHANGE:	19990603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUND AMERICAN ENTERPRISES HOLDINGS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUND AMERICAN COMPANIES INC
		DATE OF NAME CHANGE:	19920701
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>wtm-20210629.htm
<DESCRIPTION>8-K
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COMMISSION</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Washington, D.C. 20549</span></div><div style="text-indent:47.25pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:400;line-height:120%">     </span></div><div style="text-align:center"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:12pt;font-weight:700;line-height:120%">FORM <ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" name="dei:DocumentType" 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id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGFibGU6MDVhYmRmZTQ5YzMxNDYwODlkMzYyZTVmMmVhNGU2NDgvdGFibGVyYW5nZTowNWFiZGZlNDljMzE0NjA4OWQzNjJlNWYyZWE0ZTY0OF8wLTItMS0xLTAvdGV4dHJlZ2lvbjpjZjUyMmU2Yzc2Y2M0NTlkYTVmNzNjMDQ3NGRkZDk3Zl81_cc7c9b76-6fea-420c-acd5-96681476d0fa">94-2708455</ix:nonNumeric></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:400;line-height:100%">(I.R.S. Employer Identification No.)</span></div></td></tr></table></div><div style="text-indent:11.25pt"><span><br/></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:120%"><ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" name="dei:EntityAddressAddressLine1" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA1_9e45b38a-bfb4-4acf-b219-84e2977f42b6">23 South Main Street, Suite 3B</ix:nonNumeric>, <ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" name="dei:EntityAddressCityOrTown" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA2_b6e85443-42e9-4291-8216-19557d487e33">Hanover</ix:nonNumeric>, <ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" format="ixt-sec:stateprovnameen" name="dei:EntityAddressStateOrProvince" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA3_3654d4d9-6f27-4ce7-b18f-ce397a11dbf0">New Hampshire</ix:nonNumeric> <ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" name="dei:EntityAddressPostalZipCode" 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id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV80NDI_01058d24-349b-4a8d-b51f-d08e4b5f7bda">603</ix:nonNumeric>) <ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" name="dei:LocalPhoneNumber" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA4_43036e57-2207-4d13-9666-1ec2dfec7656">640-2200</ix:nonNumeric></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Times New 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Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" format="ixt-sec:boolballotbox" name="dei:PreCommencementTenderOffer" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV84NjQ_bb6f5114-506b-4233-956d-803f11e3f019">&#9744;</ix:nonNumeric> Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%"><ix:nonNumeric 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style="width:1.0%"></td><td style="width:32.918%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:1.540%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:20.418%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:1.224%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:40.200%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Title&#160;of&#160;each&#160;class</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Trading Symbol(s)</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Name&#160;of&#160;each&#160;exchange&#160;on&#160;which&#160;registered</span></td></tr><tr><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" name="dei:Security12bTitle" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGFibGU6ZDFkZjQyNjcwMTQ3NDA1ODg0NWI4MWE1MGU4ODE2MTcvdGFibGVyYW5nZTpkMWRmNDI2NzAxNDc0MDU4ODQ1YjgxYTUwZTg4MTYxN18xLTAtMS0xLTA_399e0ca3-0f74-4d16-8622-d6c2a3f4c29d">Common Shares, par value 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Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" format="ixt-sec:exchnameen" name="dei:SecurityExchangeName" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGFibGU6ZDFkZjQyNjcwMTQ3NDA1ODg0NWI4MWE1MGU4ODE2MTcvdGFibGVyYW5nZTpkMWRmNDI2NzAxNDc0MDU4ODQ1YjgxYTUwZTg4MTYxN18xLTQtMS0xLTA_b7ca914b-9580-4b5e-984c-f9af7df9d960">New York Stock Exchange</ix:nonNumeric></span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">per share</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 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contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629" format="ixt-sec:boolballotbox" name="dei:EntityEmergingGrowthCompany" id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xNDE4_55cb93bf-3cc4-4dca-a342-53bbad9d2766">&#9744;</ix:nonNumeric></span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.                                                                                                        &#160;&#160;&#160;&#160;                         </span><span style="color:#000000;font-family:'Wingdings',sans-serif;font-size:11pt;font-weight:400;line-height:120%">o</span></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><span><br/></span></div></div></div><div id="i8191417763d54ea184b899a6865e65f1_7"></div><hr style="page-break-after:always"/><div style="min-height:45pt;width:100%"><div><span><br/></span></div></div><div style="-sec-extract:summary;padding-left:54pt;text-indent:-54pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">ITEM 8.01&#160;&#160;&#160;&#160;Other Events.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:112%">In connection with its January 1, 2021 investment in Ark Insurance Holdings, Ltd (&#8220;Ark&#8221;), White Mountains Insurance Group, Ltd. (the &#8220;Company&#8221;) committed to provide up to $200 million of additional capital to Ark at Ark&#8217;s option.  The Company and Ark have agreed to extend the deadline for Ark to call this capital from June 30, 2021 to August 16, 2021.</span></div><div><span><br/></span></div><div style="padding-left:54pt;text-indent:-54pt"><span><br/></span></div><div><span><br/></span></div><div style="text-align:center"><span><br/></span></div><div style="height:45pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="-sec-extract:summary;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">2</span></div></div></div><hr style="page-break-after:always"/><div style="min-height:45pt;width:100%"><div><span><br/></span></div></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">SIGNATURES </span></div><div style="text-align:center"><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. </span></div><div><span><br/></span></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:83.479%"><tr><td style="width:1.0%"></td><td style="width:31.649%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.675%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:27.446%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:35.852%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.678%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">WHITE MOUNTAINS INSURANCE GROUP, LTD.</span></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">6/29/2021</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">By:</span></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline">/s/&#160;&#160; MICHAELA J. HILDRETH&#160;</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#160;&#160;&#160;</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#160;&#160;&#160;&#160;&#160;&#160;&#160;Michaela J. Hildreth </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%">&#160;&#160;&#160;&#160;&#160;&#160;Managing Director and </span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:100%">&#160;&#160;&#160;&#160;&#160;&#160;Chief Accounting Officer </span></div></td><td colspan="3" style="padding:0 1pt"></td></tr></table></div><div style="text-align:center"><span><br/></span></div><div style="height:45pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="-sec-extract:summary;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">3</span></div></div></div></body></html>
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<XBRL>
<?xml version="1.0" encoding="UTF-8"?>

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<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>4
<FILENAME>wtm-20210629_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
<TEXT>
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      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA1_9e45b38a-bfb4-4acf-b219-84e2977f42b6">23 South Main Street, Suite 3B</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA2_b6e85443-42e9-4291-8216-19557d487e33">Hanover</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA3_3654d4d9-6f27-4ce7-b18f-ce397a11dbf0">NH</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8zOTY_2ca374e7-db97-4af5-bd90-11a977bdaf35">03755</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV80NDI_01058d24-349b-4a8d-b51f-d08e4b5f7bda">603</dei:CityAreaCode>
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      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV8xODA4_43036e57-2207-4d13-9666-1ec2dfec7656">640-2200</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV82ODM_4137282d-ceeb-48e1-8b80-de40795fc0bc">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV83NzM_29835a9e-9ed6-43a9-a50d-6ee1c3ba7928">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV84NjQ_bb6f5114-506b-4233-956d-803f11e3f019">false</dei:PreCommencementTenderOffer>
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      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGV4dHJlZ2lvbjo5ZTc4ZWRkY2IyM2Y0MDllOTBjM2VlMWYwNGYyY2I5ZV85NzE_bc32159b-41c2-407a-998f-26f20d614b73">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGFibGU6ZDFkZjQyNjcwMTQ3NDA1ODg0NWI4MWE1MGU4ODE2MTcvdGFibGVyYW5nZTpkMWRmNDI2NzAxNDc0MDU4ODQ1YjgxYTUwZTg4MTYxN18xLTAtMS0xLTA_399e0ca3-0f74-4d16-8622-d6c2a3f4c29d">Common Shares, par value $1.00</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGFibGU6ZDFkZjQyNjcwMTQ3NDA1ODg0NWI4MWE1MGU4ODE2MTcvdGFibGVyYW5nZTpkMWRmNDI2NzAxNDc0MDU4ODQ1YjgxYTUwZTg4MTYxN18xLTItMS0xLTA_618cffca-2d0e-4e3f-81e1-cd0d74a45a22">WTM</dei:TradingSymbol>
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      contextRef="i08565beccffc4ecd9c6975946b93b9ee_D20210629-20210629"
      id="id3VybDovL2RvY3MudjEvZG9jOjgxOTE0MTc3NjNkNTRlYTE4NGI4OTlhNjg2NWU2NWYxL3NlYzo4MTkxNDE3NzYzZDU0ZWExODRiODk5YTY4NjVlNjVmMV8xL2ZyYWc6OWU3OGVkZGNiMjNmNDA5ZTkwYzNlZTFmMDRmMmNiOWUvdGFibGU6ZDFkZjQyNjcwMTQ3NDA1ODg0NWI4MWE1MGU4ODE2MTcvdGFibGVyYW5nZTpkMWRmNDI2NzAxNDc0MDU4ODQ1YjgxYTUwZTg4MTYxN18xLTQtMS0xLTA_b7ca914b-9580-4b5e-984c-f9af7df9d960">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
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</xbrl>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>6
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
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</head>
<body>
<span style="display: none;">v3.21.2</span><table class="report" border="0" cellspacing="2" id="idm139747557590984">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>Jun. 29, 2021</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CoverAbstract', window );"><strong>Cover [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Jun. 29,  2021<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">WHITE MOUNTAINS INSURANCE GROUP, LTD.<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation, State or Country Code</a></td>
<td class="text">D0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">1-8993<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">94-2708455<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">23 South Main Street, Suite 3B<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Hanover<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">NH<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">03755<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">603<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">640-2200<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre-commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre-commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_Security12bTitle', window );">Title of 12(b) Security</a></td>
<td class="text">Common Shares, par value $1.00<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">WTM<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NYSE<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000776867<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Cover page.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CoverAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementIssuerTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Section 14a<br> -Number 240<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SolicitingMaterial</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_WrittenCommunications">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
