Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES:
Net income (loss)	$ 9,154	$ 4,307
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	6,518	5,104
Amortization of intangible assets	247	351
Amortization of debt discount and prepaid debt costs	46	42
Pension cost	15	135
Stock-based compensation expense	2,622	2,561
Provision for (recovery of) losses on accounts receivable	(24)	(110)
Changes in operating assets and liabilities:
Trade and other accounts receivable	4,081	(10,782)
Inventories	(861)	(10,570)
Prepaid expenses and other assets	(82)	339
Accounts payable and accrued liabilities	2,016	(4,078)
Deferred Revenue	(3,814)	4,107
Accrued employee compensation	3,570	723
Deferred tax liability, long term	(8)	(1,396)
Other long-term liabilities	1,235	(2,326)
Net cash used in operating activities	24,715	(11,593)
INVESTING ACTIVITIES:
Purchase of property and equipment	(11,716)	(13,121)
Restricted cash	(2,300)	0
Net cash used in investing activities	(14,016)	(13,121)
FINANCING ACTIVITIES:
Principal payments on long-term debt and short-term borrowings	(7,782)	(6,890)
Proceeds from long-term and short-term borrowings	6,475	11,230
Proceeds from sale of common stock, net of offering costs	0	10,283
Repurchase of shares	(47)	(319)
Proceeds from issuance of common stock under equity compensation plans	305	1,737
restricted cash - compensating balance	(1,750)	0
Net cash provided by financing activities	(2,799)	16,041
Increase (decrease) in cash and cash equivalents from operations	7,900	(8,673)
Effect of exchange rate changes on cash and cash equivalents	408	(543)
Decrease in cash and cash equivalents	8,308	(9,216)
Cash and cash equivalents, beginning of period	28,739	29,289
Cash and cash equivalents, end of period	$ 37,047	$ 20,073