Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities
Net income (loss)	$ (1,607)	$ 2,789
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	3,300	3,100
Amortization	1,355	1,228
Non-cash restructuring charge	65	87
Amortization of deferred financing fees	95	154
Gain realized on sale of property and equipment	(9)	(2)
Stock-based compensation expense	1,832	471
Changes in operating assets and liabilities, net of acquisitions:
Trade accounts receivable	4,813	9,957
Inventories	(3,105)	(1,816)
Prepaid expenses and other current assets	1,317	(185)
Trade accounts payable, accrued expenses and other liabilities	6,978	(13,713)
Income taxes payable	1,748	(2,463)
Net cash provided by (used in) operating activities	16,782	(393)
Cash flows from investing activities
Proceeds from sales of property and equipment	12	27
Purchases of property and equipment	(5,516)	(3,026)
Acquisitions, net of cash acquired	0	(182)
Net cash used in investing activities	(5,504)	(3,181)
Cash flows from financing activities
Issuance of common stock	738	483
Proceeds from issuance of long-term debt	76,864	25,963
Payments of long-term debt including current portion	(92,042)	(47,283)
Payment of deferred financing fees	(831)	(5)
Cash dividends	(2,056)	(2,059)
Net cash used in financing activities	(17,327)	(22,901)
Effect of foreign currency rate changes	509	692
Net decrease in cash and cash equivalents	(5,540)	(25,783)
Cash and cash equivalents at beginning of period	13,732	36,889
Cash and cash equivalents at end of period	$ 8,192	$ 11,106