CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
NET SALES	$ 115,210	$ 95,907	$ 329,033	$ 292,057
COST OF SALES	64,180	50,572	188,025	155,528
GROSS PROFIT	51,030	45,335	141,008	136,529
OPERATING EXPENSES:
Selling, general, and administrative	31,350	28,880	95,002	88,638
Research and development	7,308	7,098	25,064	20,130
Write-off of patents and intangible assets	8,116	17	8,169	27
Fair value adjustments recorded to income during the period	(4,108)	0	(4,075)	0
Acquired in-process research and development	0	275	0	2,450
Total operating expenses	42,639	36,253	124,080	111,218
INCOME FROM OPERATIONS	8,391	9,082	16,928	25,311
OTHER INCOME (EXPENSE):
Interest income	69	57	200	176
Interest expense	(1,916)	(128)	(5,297)	(352)
Other income (expense)	(104)	26	(174)	633
Other income (expense) — net	(1,951)	(45)	(5,271)	457
INCOME BEFORE INCOME TAXES	6,440	9,037	11,657	25,768
INCOME TAX EXPENSE	833	1,811	1,627	6,699
NET INCOME	5,607	7,226	10,030	19,069
EARNINGS PER COMMON SHARE:
Basic (in dollars per share)	$ 0.13	$ 0.17	$ 0.24	$ 0.45
Diluted (in dollars per share)	$ 0.13	$ 0.17	$ 0.23	$ 0.45
AVERAGE COMMON SHARES:
Basic (in shares)	42,596	42,202	42,560	42,087
Diluted (in shares)	42,872	42,692	42,793	42,536
Ostial Solutions, LLC [Member]
OPERATING EXPENSES:
Write-off of patents and intangible assets	$ 8,089	$ 0	$ 8,089	$ 0