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
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Jun. 30, 2015
Sep. 30, 2015
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             $ (970) (2,273)
Total U.S. Federal income tax expense             (970) (2,299)
State and local income tax expense                
State and local income tax expense Current             (101) (68)
State and local income tax expense Deferred             (168) (315)
Total state and local income tax expense             (269) (383)
Foreign income tax expense (benefit)                
Foreign income tax expense (benefit) Current             35 (171)
Total income tax expense $ (696) $ (807) $ (54) $ 354 $ 299 $ (508) $ (1,204) $ (2,853)