CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 118,868	$ 96,938
Trade accounts receivable, net of allowances of $8,159 and $7,221	113,538	114,916
Inventories, net	207,389	171,806
Deferred tax assets	40,049	39,100
Prepaid expenses and other current assets	30,739	30,291
Total current assets	510,583	453,051
Property, plant and equipment, net	192,724	177,898
Intangible assets, net	202,410	212,267
Goodwill	248,824	294,067
Deferred tax assets	19,545	15,957
Other assets	9,986	10,359
Total assets	1,184,072	1,163,599
Current Liabilities:
Accounts payable, trade	54,466	36,742
Deferred revenue	4,474	3,505
Accrued compensation	28,520	34,914
Accrued expenses and other current liabilities	34,818	31,768
Total current liabilities	122,278	106,929
Long-term borrowings under senior credit facility	341,875	321,875
Long-term convertible securities	203,265	197,672
Deferred tax liabilities	5,154	5,393
Other liabilities	12,023	13,955
Total liabilities	684,595	645,824
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; 36,972 and 36,852 issued at September 30, 2013 and December 31, 2012, respectively	370	369
Additional paid-in capital	594,078	587,301
Treasury stock, at cost; 8,903 shares at September 30, 2013 and December 31, 2012	(367,121)	(367,121)
Accumulated other comprehensive (loss)	(713)	(4,797)
Retained earnings	272,863	302,023
Total stockholders’ equity	499,477	517,775
Total liabilities and stockholders’ equity	$ 1,184,072	$ 1,163,599