Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
REVENUES:
Revenue from Contract with Customer, Excluding Assessed Tax	$ 303,379	$ 312,282	$ 631,986	$ 643,214
Cost of goods sold	197,095	208,413	404,287	404,042
Gross Profit	106,284	103,869	227,699	239,172
OPERATING EXPENSES:
Selling, general and administrative	67,242	67,824	139,547	140,457
Research and development	10,279	11,199	21,025	24,022
Restructuring, strategic transaction and integration	6,482	37,041	18,789	61,433
Change in fair value of contingent earn-out	2,700	(39,500)	2,700	(47,200)
contract settlement	25	1,039	25	3,822
TOTAL OPERATING EXPENSES	86,728	77,603	182,086	182,534
INCOME FROM OPERATIONS	19,556	26,266	45,613	56,638
Interest Expense	(771)	(139)	(967)	(272)
OTHER INCOME (EXPENSE), net	2,053	1,479	(3,427)	4,670
INCOME BEFORE INCOME TAXES	20,838	27,606	41,219	61,036
PROVISION FOR INCOME TAXES	(1,930)	(4,773)	(5,477)	(7,205)
NET INCOME	$ 18,908	$ 22,833	$ 35,742	$ 53,831
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.91	$ 1.11	$ 1.72	$ 2.62
Diluted (in dollars per share)	$ 0.88	$ 1.06	$ 1.66	$ 2.50
WEIGHTED AVERAGE NUMBER OF SHARES
Basic (in shares)	20,880	20,622	20,831	20,577
Diluted (in shares)	21,506	21,520	21,545	21,546