Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Components of Consolidated Provision for Income Taxes (Detail)

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Income Taxes - Summary of Components of Consolidated Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
U.S Federal income tax expense    
U.S Federal income tax expense Current   $ (26)
U.S Federal income tax expense Deferred $ (1,508) (2,273)
Total U.S. Federal income tax expense (1,508) (2,299)
State and local income tax expense    
State and local income tax expense Current (101) (68)
State and local income tax expense Deferred (256) (315)
Total state and local income tax expense (357) (383)
Foreign income tax expense (benefit)    
Foreign income tax expense (benefit) Current 35 (171)
Total income tax expense $ (1,830) $ (2,853)