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Income Taxes - Summary of Income Tax Examinations (Details) | 12 Months Ended
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Dec. 31, 2015
Minimum | U.S. Internal Revenue Service |
Income Tax Examination |
Open Tax Year | 2012
Minimum | New Zealand Inland Revenue |
Income Tax Examination |
Open Tax Year | 2011
Maximum | U.S. Internal Revenue Service |
Income Tax Examination |
Open Tax Year | 2015
Maximum | New Zealand Inland Revenue |
Income Tax Examination |
Open Tax Year | 2015

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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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