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	$ 40,481	$ 752	$ 30,346
Adjustments to reconcile net income to net cash provided by operating acitivites:
Depreciation	18,635	18,519	17,392
Amortization of debt discount	0	3,903	4,244
Amortization, all other	27,981	20,265	20,171
Stock-based compensation	5,653	5,240	4,223
Deferred income taxes	12,946	(13,098)	13,158
Sale of accounts receivable to (collections on behalf of) purchaser	0	0	(29,000)
Income tax benefit of stock option exercises	1,052	1,197	227
Excess tax benefit from stock option exercises	(1,206)	(1,363)	(485)
Loss on extinguishment of debt	0	0	79
Impairment of goodwill	0	60,302	0
Increase (decrease) in cash flows from changes in assets and liabilities, net of effects from acquisitions:
Accounts receivable	1,687	8,464	9,342
Inventories	3,810	(7,850)	(20,317)
Accounts payable	259	2,649	(4,645)
Income taxes	(6,497)	4,838	(692)
Accrued compensation and benefits	767	1,673	2,516
Other assets	(1,210)	(4,243)	332
Other liabilities	(9,159)	1,745	(8,648)
Total operating	54,718	102,241	7,897
Net cash provided by operating activities	95,199	102,993	38,243
Cash flows from investing activities:
Payments related to business acquisitions and distribution agreements, net of cash acquired	(86,253)	(4,191)	(5,289)
Proceeds from sale of property	1,836	0	0
Purchases of property, plant and equipment	(21,532)	(17,552)	(14,732)
Net cash used in investing activities	(105,949)	(21,743)	(20,021)
Cash flows from financing activities:
Net proceeds from common stock issued under employee plans	10,165	6,117	2,452
Repurchase of common stock	(3,923)	(15,021)	(22,977)
Excess tax benefit from stock option exercises	1,206	1,363	485
Payments on senior credit agreement	(53,588)	(1,350)	(1,350)
Proceeds of senior credit agreement	73,000	58,000	12,000
Payments on mortgage notes	(969)	(894)	(824)
Payments on senior subordinated notes	(100)	(111,766)	(2,933)
Payments related to issuance of debt	0	0	(2,525)
Dividends paid on common stock	(12,862)	0	0
Other, net	(1,576)	(3,148)	66
Net cash provided by (used in) financing activities	11,353	(66,699)	(15,606)
Effect of exchange rate changes on cash and cash equivalents	(2,931)	(920)	(297)
Net increase (decrease) in cash and cash equivalents	(2,328)	13,631	2,319
Cash and cash equivalents at beginning of year	26,048	12,417	10,098
Cash and cash equivalents at end of year	23,720	26,048	12,417
Non-cash financing activities:
Dividends payable	4,256	0	0
Cash paid during the year for:
Interest	5,038	5,797	6,025
Income taxes	$ 10,953	$ 4,760	$ 3,257