Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
REVENUES:
Revenue from Contract with Customer, Excluding Assessed Tax	$ 318,046	$ 328,607
Cost of goods sold	205,366	207,192
Gross Profit	112,680	121,415
OPERATING EXPENSES:
Selling, general and administrative	72,391	72,305
Research and development	10,709	10,746
Restructuring, strategic transaction and integration	2,883	12,307
Change in fair value of contingent earn-out	0	0
contract settlement	127	0
TOTAL OPERATING EXPENSES	86,110	95,358
INCOME FROM OPERATIONS	26,570	26,057
Interest Expense	(161)	(196)
OTHER INCOME (EXPENSE), net	683	(5,480)
INCOME BEFORE INCOME TAXES	27,092	20,381
PROVISION FOR INCOME TAXES	(3,361)	(3,547)
NET INCOME	$ 23,731	$ 16,834
NET INCOME PER SHARE
Basic (in dollars per share)	$ 1.12	$ 0.81
Diluted (in dollars per share)	$ 1.09	$ 0.78
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	21,149	20,780
Diluted (in shares)	21,695	21,507