CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 131,296	$ 71,994
Trade accounts receivable, net of allowances of $6,447 and $6,184	134,546	131,918
Inventories, net	241,835	237,114
Deferred tax assets	58,173	58,663
Prepaid expenses and other current assets	42,397	29,632
Total current assets	608,247	529,321
Property, plant and equipment, net	215,460	209,986
Intangible assets, net	440,583	459,459
Goodwill	357,022	363,888
Deferred tax assets	5,689	5,603
Other assets	10,893	10,368
Total assets	1,637,894	1,578,625
Current liabilities:
Borrowings under senior credit facility	7,500	3,750
Convertible securities	2,903	0
Accounts payable, trade	58,197	34,060
Deferred revenue	4,303	5,176
Accrued compensation	40,019	40,943
Accrued expenses and other current liabilities	42,831	42,096
Total current liabilities	155,753	126,025
Long-term borrowings under senior credit facility	429,375	413,125
Long-term convertible securities	214,358	213,121
Deferred tax liabilities	94,701	91,623
Other liabilities	31,984	30,409
Total liabilities	$ 926,171	$ 874,303
Commitments and contingencies
Stockholders’ equity:
Preferred stock; no par value; 15,000 authorized shares; none outstanding	$ 0	$ 0
Common stock; $0.01 par value; 60,000 authorized shares; 42,012 and 41,644 issued at June 30, 2015 and December 31, 2014, respectively	420	416
Additional paid-in capital	790,371	779,555
Treasury stock, at cost; 8,903 shares at June 30, 2015 and December 31, 2014	(367,121)	(367,121)
Accumulated other comprehensive loss	(40,288)	(23,488)
Retained earnings	328,341	314,960
Total stockholders’ equity	711,723	704,322
Total liabilities and stockholders’ equity	$ 1,637,894	$ 1,578,625