CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 125,718	$ 100,808
Trade accounts receivable, net of allowances of $6,695 and $6,978	119,527	118,129
Inventories, net	169,376	171,261
Deferred tax assets	64,575	36,155
Prepaid expenses and other current assets	14,366	25,904
Total current assets	493,562	452,257
Property, plant and equipment, net	161,189	131,383
Intangible assets, net	218,345	237,122
Goodwill	292,426	292,980
Deferred tax assets	8,028	21,477
Other assets	11,956	13,128
Total assets	1,185,506	1,148,347
Current Liabilities:
Accounts payable, trade	43,239	27,656
Deferred revenue	3,645	4,543
Accrued compensation	28,099	28,010
Accrued expenses and other current liabilities	37,591	41,659
Total current liabilities	112,574	101,868
Long-term borrowings under senior credit facility	321,875	179,688
Long-term convertible securities	195,860	352,576
Deferred tax liabilities	14,893	5,726
Other liabilities	13,603	15,851
Total liabilities	658,805	655,709
Commitments and contingencies
Stockholders' Equity:
Preferred Stock; no par value; 15,000 authorized shares; none outstanding
Common stock; $0.01 par value; 60,000 authorized shares 35,905 and 35,734 issued at September 30, 2012 and December 31, 2011, respectively	359	357
Additional paid-in capital	613,721	607,676
Treasury stock, at cost; 8,903 shares at September 30, 2012 and December 31, 2011	(367,121)	(367,121)
Accumulated other comprehensive (loss):	(9,495)	(9,093)
Retained earnings	289,237	260,819
Total stockholders' equity	526,701	492,638
Total liabilities and stockholders' equity	$ 1,185,506	$ 1,148,347