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Significant Components of Deferred Income Tax Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred income tax assets:    
Deferred rent expense $ 4,028 $ 3,686
Stock options 4,179 3,348
Inventory 1,298 1,312
Operating loss carry-forward 2,213 2,073
Accounts receivable allowances 217 406
Accrued compensation 867 897
Other 2,820 2,911
Total deferred income tax assets $ 15,622 $ 14,633