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Income Tax (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Current deferred tax assets (liabilities):    
Accrued expenses $ 130 $ 110
Deferred rent 27 110
Accounts receivable 673 623
Inventory 1,131 612
Amortization (21) (17)
Prepaid expenses (67) (54)
Net current deferred tax assets 1,855 1,384
Long-term deferred tax assets (liabilities):    
Property and equipment (1,182) (783)
Deferred Rent 396 300
Net deferred tax liabilities $ (786) $ (483)