CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (1,774)	$ 698
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1,953	1,845
Deferred income taxes	(1,230)	411
Stock-based compensation	102	134
Other	144	(235)
Changes in operating assets and liabilities:
Accounts receivable, net	(436)	2,317
Inventories	(2,368)	(2,737)
Other current assets	(297)	(300)
Accounts payable and other accrued expenses	3,352	3,135
Accrued salaries, wages and payroll taxes	(1,172)	(527)
Refundable deposits	409	(134)
Net cash (used in) provided by operating activities	(1,317)	4,607
Cash flows from investing activities:
Expenditures for property, equipment and leasehold improvements	(1,902)	(1,798)
Proceeds from sale of property, equipment and leasehold improvements	0	29
Net cash used in investing activities	(1,902)	(1,769)
Cash flows from financing activities:
Principal payments on debt and capital lease obligations	(163)	(148)
Proceeds from issuances of common stock	94	0
Net cash used in financing activities	(69)	(148)
Increase (decrease) in cash	(3,288)	2,690
Cash [Abstract]
Beginning of period	5,013	795
End of period	1,725	3,485
Supplemental disclosure of cash flow information:
Cash paid for interest	182	193
Cash paid for income taxes, net	2	374
Purchases of Property, equipment and leasehold improvements included in Accounts payable	$ 540	$ 0