Income Taxes - Deferred Taxes (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred tax assets:    
Inventory $ 589 $ 524
Net operating loss carryforwards 2,786 3,296
Tax credit carryforwards 654 585
Capital loss carryforwards 1,090 1,306
Reserves and accruals 631 434
Intangible assets 996 1,040
Stock options 355 312
Other 16 48
Total deferred tax assets 7,117 7,545
Deferred tax liabilities:    
Property and equipment (668) (706)
Goodwill (3,504) (3,130)
Foreign branch deferred offset (1,176) (1,411)
Total deferred tax liabilities (5,348) (5,247)
Net deferred tax assets before valuation allowance 1,769 2,298
Valuation allowance (2,242) (3,157)
Net deferred tax liability (473) (859)
Deferred tax classification    
Short-term deferred tax asset   758
Short-term deferred tax liability   (116)
Net short-term deferred tax asset   642
Long-term deferred tax asset 1,205 1,418
Long-term deferred tax liability (1,678) (2,919)
Net long-term deferred tax liability (473) (1,501)
Net deferred tax liability $ (473) $ (859)