CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Sales
Sales	$ 609,357	$ 621,495	$ 1,168,818	$ 1,218,554
Cost of sales
Total cost of sales	380,843	396,776	738,902	784,078
Gross profit	228,514	224,719	429,916	434,476
Research and development expenses	23,868	23,194	44,417	45,057
Selling expenses	30,407	29,564	58,499	59,160
General and administrative expenses	76,134	77,378	163,734	150,610
Loss on divestiture	0	0	4,651	0
Operating income	98,105	94,583	158,615	179,649
Interest expense	(9,788)	(10,180)	(19,318)	(20,139)
Other income, net	4,555	440	7,552	5,283
Earnings before income taxes	92,872	84,843	146,849	164,793
Provision for income taxes	(22,000)	(23,435)	(35,292)	(43,916)
Net earnings	$ 70,872	$ 61,408	$ 111,557	$ 120,877
Basic earnings per share
Basic earnings per share (usd per share)	$ 1.84	$ 1.50	$ 2.90	$ 2.95
Diluted earnings per share
Diluted earnings per share (usd per share)	1.83	1.49	2.89	2.94
Dividends per share	$ 0.19	$ 0.18	$ 0.37	$ 0.35
Weighted average shares outstanding:
Basic (shares)	38,429	40,915	38,438	40,921
Diluted (shares)	38,654	41,088	38,657	41,092
Product [Member]
Net Sales
Sales	$ 505,416	$ 515,392	$ 958,837	$ 1,024,367
Cost of sales
Cost of Goods and Services Sold	316,389	331,881	610,916	661,335
Service [Member]
Net Sales
Sales	103,941	106,103	209,981	194,187
Cost of sales
Cost of Goods and Services Sold	$ 64,454	$ 64,895	$ 127,986	$ 122,743