Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Flows from Operating Activities
Net income (loss)	$ 12,645	$ 16,523	$ (91,068)
(Loss) income from discontinued operations	(5)	7,307	(15,712)
Income (loss) from continuing operations	12,650	9,216	(75,356)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	26,344	26,181	23,964
Provision for deferred income taxes	994	5,028	(10,629)
Stock compensation expense	3,148	4,642	4,315
Non-cash charges to interest expense	1,547	2,328	4,324
Intangible asset impairment	4,628		76,964
Other non-cash adjustments	4,176	3,321	7,252
Increase (decrease) in cash resulting from changes in the following (excluding the effects of acquisitions):
Accounts receivable	6,268	(7,612)	(4,186)
Inventories	(1,022)	(10,101)	152
Other current assets and other assets	2,409	10,172	1,626
Accounts payable	(3,770)	2,076	12,506
Accrued expenses and other non-current liabilities	(7,140)	4,577	6,259
Net cash provided by operating activities of continuing operations	50,232	49,828	47,191
Net cash (used in) provided by operating activities of discontinued operations	(151)	(3,133)	22,178
Net cash provided by operating activities	50,081	46,695	69,369
Cash Flows from Investing Activities
Cash paid for acquisitions, net of cash acquired	(45,071)	(109,248)
Purchase of other investment		(250)	(1,250)
Purchases of property, plant, and equipment	(11,351)	(11,552)	(8,362)
Net proceeds from sale of businesses		67,529	29,164
Net proceeds from sale of property and equipment	659	1,226	221
Net cash (used in) provided by investing activities of continuing operations	(55,763)	(52,295)	19,773
Net cash provided by (used in) investing activities of discontinued operations		2,089	(384)
Net cash (used in) provided by investing activities	(55,763)	(50,206)	19,389
Cash Flows from Financing Activities
Long-term debt payments	(473)	(74,262)	(58,967)
Proceeds from long-term debt		73,849	8,559
Payment of deferred financing fees	(18)	(1,570)	(164)
Purchase of treasury stock at market prices	(970)	(826)	(1,114)
Excess tax benefit from stock compensation	10		54
Net proceeds from issuance of common stock	278	34	270
Net cash used in financing activities	(1,173)	(2,775)	(51,362)
Effect of exchange rate changes on cash	766	(463)	(126)
Net (decrease) increase in cash and cash equivalents	(6,089)	(6,749)	37,270
Cash and cash equivalents at beginning of year	54,117	60,866	23,596
Cash and cash equivalents at end of year	$ 48,028	$ 54,117	$ 60,866