Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
OPERATING ACTIVITIES:
Net income (loss)	$ 8,565,000	$ (723,000)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation	5,104,000	4,335,000
Amortization of intangible assets	351,000	422,000
Amortization of debt discount and prepaid debt costs	42,000	55
Gain on embedded derivatives		(1,086,000)
Pension cost	135,000	186,000
Stock-based compensation expense	2,561,000	2,440,000
Provision for (recovery of) losses on accounts receivable	(237,000)	304,000
Changes in operating assets and liabilities:
Trade and other accounts receivable	(16,673,000)	(4,430,000)
Inventories	(4,700,000)	(8,621,000)
Prepaid expenses and other assets	478,000	722,000
Accounts payable and accrued liabilities	(3,626,000)	4,204,000
Accrued employee compensation	(1,296,000)	954,000
Deferred tax liability, long term	29,000
Other long-term liabilities	(2,326,000)	(5,583,000)
Net cash used in operating activities	(11,593,000)	(6,821,000)
INVESTING ACTIVITIES:
Purchase of property and equipment	(13,121,000)	(10,994,000)
Net cash used in investing activities	(13,121,000)	(10,994,000)
FINANCING ACTIVITIES:
Principal payments on long-term debt and short-term borrowings	(6,890,000)	(10,254,000)
Proceeds from long-term and short-term borrowings	11,230,000	10,047,000
Proceeds from sale of common stock, net of offering costs	10,283,000
Repurchase of shares	(319,000)	(154,000)
Proceeds from issuance of common stock under equity compensation plans	1,737,000	2,561,000
Release of restricted cash		8,000,000
Net cash provided by financing activities	16,041,000	10,200,000
Effect of exchange rate changes on cash and cash equivalents	(543,000)	(1,226,000)
Decrease in cash and cash equivalents	(9,216,000)	(8,841,000)
Cash and cash equivalents, beginning of period	29,289,000	39,829,000
Cash and cash equivalents, end of period	$ 20,073,000	$ 30,988,000