Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Income Tax Benefit Computed at Federal Statutory Tax Rate to Actual Income Tax (Benefit) Expense (Detail)

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Income Taxes - Reconciliation of Income Tax Benefit Computed at Federal Statutory Tax Rate to Actual Income Tax (Benefit) Expense (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Expense derived by applying the Federal income tax rate to (loss) income before taxes $ (4,572) $ (5,813) $ 7,169
State income tax, net of federal benefit 561 (177) 607
Foreign income tax (813) (477) (170)
Change in valuation allowance 0 0 (9,087)
Benefit of assets not previously recognized 0 (516) 0
Nondeductible expenses 418 454 644
Fair value adjustment on stock acquisition (52) (28) 487
Stock-based compensation 209 223 139
Reduction in available Federal NOL 350 0 0
Other 53 1 1
Total income tax benefit $ (3,846) $ (6,333) $ (210)