CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 294,976	$ 280,325	$ 570,391	$ 529,238
Cost of sales	159,909	156,186	314,417	293,205
Gross profit	135,067	124,139	255,974	236,033
Operating expenses:
Selling, general and administrative	85,487	91,563	169,502	172,587
Research and development	18,466	17,593	35,853	33,867
Impairment charges	0	4,283	1,672	4,283
Contingent consideration expense	1,187	1,805	3,787	2,207
Acquired in-process research and development	6,671		6,671
Total operating expenses	111,811	115,244	217,485	212,944
Income from operations	23,256	8,895	38,489	23,089
Other income (expense):
Interest income	96	92	201	564
Interest expense	(1,348)	(1,386)	(2,350)	(2,923)
Other expense - net	(1,303)	(736)	(1,468)	(1,171)
Total other expense - net	(2,555)	(2,030)	(3,617)	(3,530)
Income before income taxes	20,701	6,865	34,872	19,559
Income tax expense	5,403	1,949	9,029	3,685
Net income	$ 15,298	$ 4,916	$ 25,843	$ 15,874
Earnings per common share
Basic (in dollars per share)	$ 0.27	$ 0.09	$ 0.46	$ 0.28
Diluted (in dollars per share)	$ 0.27	$ 0.09	$ 0.45	$ 0.28
Weighted average shares outstanding
Basic (in shares)	56,691	56,061	56,642	55,890
Diluted (in shares)	57,600	57,277	57,565	57,128