Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
REVENUES:
Revenues	$ 1,316,308	$ 1,271,004	$ 1,266,208
Cost of Goods Sold	824,818	809,507	794,344
Gross profit	491,490	461,497	471,864
OPERATING EXPENSES:
Selling, general and administrative	302,583	283,953	276,982
Research and development	47,498	42,948	48,611
Restructuring, strategic transaction and integration expenses	18,037	28,409	80,574
Change in fair value of contingent earn-out	0	9,000	(47,400)
Contractsettlements	127	(975)	5,737
Total operating expenses	368,245	363,335	364,504
Income from operations	123,245	98,162	107,360
Interest Expense	(858)	(1,753)	(549)
OTHER INCOME,NET	799	1,085	7,896
Income before income taxes	123,186	97,494	114,707
Provision for income taxes	(20,051)	(10,624)	(13,672)
Net Income	$ 103,135	$ 86,870	$ 101,035
Basic	$ 4.86	$ 4.16	$ 4.90
Diluted	$ 4.74	$ 4.02	$ 4.69
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	21,206	20,907	20,629
Diluted (in shares)	21,781	21,591	21,545