Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
REVENUES:
Revenue from Contract with Customer, Excluding Assessed Tax	$ 318,567	$ 307,471	$ 950,553	$ 950,685
Cost of goods sold	204,643	188,919	608,930	592,961
Gross Profit	113,924	118,552	341,623	357,724
OPERATING EXPENSES:
Selling, general and administrative	70,854	65,876	210,401	206,333
Research and development	10,126	12,002	31,151	36,024
Restructuring, strategic transaction and integration	4,114	7,975	22,903	69,408
Change in fair value of contingent earn-out	4,300	(200)	7,000	(47,400)
contract settlement	(1,000)	0	(975)	3,822
TOTAL OPERATING EXPENSES	88,394	85,653	270,480	268,187
INCOME FROM OPERATIONS	25,530	32,899	71,143	89,537
Interest Expense	(616)	(139)	(1,583)	(411)
OTHER INCOME (EXPENSE), net	1,252	(10)	(2,175)	4,660
INCOME BEFORE INCOME TAXES	26,166	32,750	67,385	93,786
PROVISION FOR INCOME TAXES	(1,180)	(6,187)	(6,657)	(13,392)
NET INCOME	$ 24,986	$ 26,563	$ 60,728	$ 80,394
NET INCOME PER SHARE
Basic (in dollars per share)	$ 1.19	$ 1.29	$ 2.91	$ 3.90
Diluted (in dollars per share)	$ 1.16	$ 1.24	$ 2.82	$ 3.73
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	20,948	20,666	20,870	20,607
Diluted (in shares)	21,556	21,487	21,561	21,556