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Income Taxes - Significant Components of Deferred Income Tax Assets and Liabilities Classified (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Income Tax Disclosure [Abstract] |  |
Deferred income taxes, current | $ 6,448 | $ 6,149
Deferred income taxes, non-current | (21,303) | (15,974)
Net deferred tax liability | $ (14,855) | $ (9,825)

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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, before jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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