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ACQUISITIONS OF REAL ESTATE PROPERTY - Fair Value of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
2015 Acquisitions |  |
Business Acquisition [Line Items] |  |
Land and improvements | $ 366,242 |
Buildings and improvements | 2,455,917 |
Acquired lease intangibles | 285,596 |
Other assets | 820,212 |
Total assets acquired | 3,927,967 |
Notes payable and other debt | 177,857 |
Other liabilities | 128,923 |
Total liabilities assumed | 306,780 |
Net assets acquired | 3,621,187 |
Redeemable OP unitholder interests assumed | 87,245 |
Cash acquired | 54,778 |
Equity issued | 2,216,355 |
Total cash used | 1,262,809 |
Goodwill | 752,100 |
2015 Acquisitions | Triple-Net Leased Properties |  |
Business Acquisition [Line Items] |  |
Land and improvements | 123,879 |
Buildings and improvements | 627,111 |
Acquired lease intangibles | 23,564 |
Other assets | 143,372 |
Total assets acquired | 917,926 |
Notes payable and other debt | 0 |
Other liabilities | 34,992 |
Total liabilities assumed | 34,992 |
Net assets acquired | 882,934 |
Goodwill | 133,600 |
2015 Acquisitions | Senior Living Operations |  |
Business Acquisition [Line Items] |  |
Land and improvements | 70,713 |
Buildings and improvements | 703,080 |
Acquired lease intangibles | 83,867 |
Other assets | 275,139 |
Total assets acquired | 1,132,799 |
Notes payable and other debt | 77,940 |
Other liabilities | 45,142 |
Total liabilities assumed | 123,082 |
Net assets acquired | 1,009,717 |
Goodwill | 221,300 |
2015 Acquisitions | MOB Operations |  |
Business Acquisition [Line Items] |  |
Land and improvements | 171,650 |
Buildings and improvements | 1,125,726 |
Acquired lease intangibles | 178,165 |
Other assets | 401,701 |
Total assets acquired | 1,877,242 |
Notes payable and other debt | 99,917 |
Other liabilities | 48,789 |
Total liabilities assumed | 148,706 |
Net assets acquired | 1,728,536 |
Goodwill | $ 397,200 |
2014 Acquisitions |  |
Business Acquisition [Line Items] |  |
Land and improvements |  | $ 145,867
Buildings and improvements |  | 1,628,233
Acquired lease intangibles |  | 65,335
Other assets |  | 12,620
Total assets acquired |  | 1,852,055
Notes payable and other debt |  | 241,077
Other liabilities |  | 133,323
Total liabilities assumed |  | 374,400
Net assets acquired |  | 1,477,655
Cash acquired |  | 8,931
Total cash used |  | 1,468,724
2014 Acquisitions | Triple-Net Leased Properties |  |
Business Acquisition [Line Items] |  |
Land and improvements |  | 45,586
Buildings and improvements |  | 546,849
Acquired lease intangibles |  | 28,883
Other assets |  | 227
Total assets acquired |  | 621,545
Notes payable and other debt |  | 12,927
Other liabilities |  | 8,609
Total liabilities assumed |  | 21,536
Net assets acquired |  | 600,009
Cash acquired |  | 227
Total cash used |  | 599,782
2014 Acquisitions | Senior Living Operations |  |
Business Acquisition [Line Items] |  |
Land and improvements |  | 100,281
Buildings and improvements |  | 1,081,384
Acquired lease intangibles |  | 36,452
Other assets |  | 12,393
Total assets acquired |  | 1,230,510
Notes payable and other debt |  | 228,150
Other liabilities |  | 124,714
Total liabilities assumed |  | 352,864
Net assets acquired |  | 877,646
Cash acquired |  | 8,704
Total cash used |  | $ 868,942

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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of real estate acquired, at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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