CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 107,598	$ 48,132
Restricted cash and cash equivalents	0	4,073
Trade accounts receivable, net of allowances of $6,173 and $5,572	140,750	132,241
Inventories, net	219,671	211,429
Prepaid expenses and other current assets	43,858	42,620
Total current assets	511,877	438,495
Property, plant and equipment, net	212,195	205,181
Intangible assets, net	573,687	603,740
Goodwill	515,636	512,389
Deferred tax assets	7,376	6,932
Other assets	6,653	7,487
Total assets	1,827,424	1,774,224
Current liabilities:
Borrowings under senior credit facility	28,750	14,375
Accounts payable, trade	38,932	34,772
Deferred revenue	6,997	5,666
Accrued compensation	47,809	45,154
Accrued expenses and other current liabilities	38,909	39,160
Total current liabilities	161,397	139,127
Long-term borrowings under senior credit facility	433,750	481,875
Long-term convertible securities	225,248	218,240
Deferred tax liabilities	153,372	154,891
Other liabilities	30,230	28,648
Total liabilities	1,003,997	1,022,781
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; 46,258 and 45,857 issued at September 30, 2016 and December 31, 2015, respectively	463	459
Additional paid-in capital	1,038,200	1,020,128
Treasury stock, at cost; 8,915 shares at September 30, 2016 and December 31, 2015	(367,121)	(367,121)
Accumulated other comprehensive loss	(40,310)	(47,902)
Retained earnings	192,195	145,879
Total stockholders’ equity	823,427	751,443
Total liabilities and stockholders’ equity	$ 1,827,424	$ 1,774,224