CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Sales
Sales	$ 620,619	$ 571,614	$ 1,839,173	$ 1,722,892
Cost of sales
Total cost of sales	383,611	358,793	1,167,689	1,123,466
Gross profit	237,008	212,821	671,484	599,426
Research and development expenses	21,618	17,587	66,675	54,163
Selling expenses	30,067	24,869	89,227	81,650
General and administrative expenses	78,998	77,251	229,608	230,515
Impairment of assets held for sale	8,656	0	8,656	0
Restructuring Charges	0	8,541	0	20,730
Operating income	97,669	84,573	277,318	212,368
Interest expense	(9,955)	(9,055)	(30,094)	(25,059)
Other income, net	3,627	5,417	8,910	6,844
Earnings before income taxes	91,341	80,935	256,134	194,153
Provision for income taxes	(21,638)	(16,315)	(65,554)	(46,754)
Net earnings	$ 69,703	$ 64,620	$ 190,580	$ 147,399
Basic earnings per share
Basic earnings per share (usd per share)	$ 1.71	$ 1.56	$ 4.66	$ 3.52
Diluted earnings per share
Diluted earnings per share (usd per share)	1.70	1.55	4.64	3.49
Dividends per share	$ 0.18	$ 0.17	$ 0.53	$ 0.51
Weighted average shares outstanding:
Basic (shares)	40,769	41,545	40,865	41,926
Diluted (shares)	40,950	41,797	41,040	42,190
Product [Member]
Net Sales
Sales	$ 528,339	$ 493,398	$ 1,552,706	$ 1,457,772
Cost of sales
Cost of Goods and Services Sold	328,424	305,921	989,759	945,886
Service [Member]
Net Sales
Sales	92,280	78,216	286,467	265,120
Cost of sales
Cost of Goods and Services Sold	$ 55,187	$ 52,872	$ 177,930	$ 177,580