Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATING ACTIVITIES:
Net loss	$ (278)	$ (952)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	2,118	1,768
Amortization of intangible assets	91	134
Amortization of debt discount and prepaid debt costs	15	11
Pension cost	5	46
Stock-based compensation expense	957	1,286
Provision for (recovery of) losses on accounts receivable	10	(172)
Changes in operating assets and liabilities:
Trade and other accounts receivable	152	(4,033)
Inventories	(880)	(5,782)
Prepaid expenses and other assets	77	116
Accounts payable and accrued liabilities and deferred revenue	5,624	(1,444)
Accrued employee compensation	1,116	(533)
Deferred income taxes	(8)	11
Other long-term liabilities	(33)	(2,263)
Net cash used in operating activities	8,966	(11,807)
INVESTING ACTIVITIES:
Purchase of property and equipment	(2,026)	(4,057)
Net cash used in investing activities	(2,026)	(4,057)
FINANCING ACTIVITIES:
Principal payments on long-term debt and short-term borrowings	(3,608)	(3,183)
Proceeds from long-term and short-term borrowings	3,318	8,161
Proceeds from sale of common stock, net of offering costs	0	10,283
Repurchase of shares	(20)	(286)
Proceeds from issuance of common stock under equity compensation plans	281	1,319
Net cash provided by financing activities	(29)	16,294
Increase in cash and cash equivalents from operations	6,911	430
Effect of exchange rate changes on cash and cash equivalents	(1,526)	909
Increase in cash and cash equivalents	5,385	1,339
Cash and cash equivalents, beginning of period	28,739	29,289
Cash and cash equivalents, end of period	$ 34,124	$ 30,628