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Income Taxes - Summary of Difference Between Effective Income Tax Rate Determined by Applying Statutory Income Tax Rate (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Summary of difference between effective income tax rate determined by applying statutory income tax rate    
(Provision for) benefit from U.S federal statutory rate $ 663 $ 1,611
Effect of state income taxes 32 35
Non-deductible business meals and entertainment expenses (16) (486)
Foreign income taxes included in equity in earnings 269 1,400
Accrual to return adjustments and other (580) (12)
Change in valuation allowance (796) (2,214)
Total (Expense) $ (428) $ 334