Interim Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net sales:
Total net sales	$ 271,829	$ 257,572	$ 818,949	$ 752,784
Cost of sales	203,119	190,800	613,798	559,301
Gross profit	68,710	66,772	205,151	193,483
Selling, general and administrative expenses	44,255	38,523	128,741	117,087
Income from operations	24,455	28,249	76,410	76,396
Interest expense	(1,837)	(1,399)	(5,222)	(4,233)
Interest income	359	100	862	309
Other income (expense), net	242	(265)	(442)	(491)
Income before income taxes	23,219	26,685	71,608	71,981
Provision for income taxes	5,801	3,142	18,270	15,084
Net Income	$ 17,418	$ 23,543	$ 53,338	$ 56,897
Net income per common share:
Basic (in dollars per share)	$ 1.48	$ 2.01	$ 4.55	$ 4.88
Diluted (in dollars per share)	$ 1.47	$ 2.00	$ 4.52	$ 4.84
Average common shares:
Basic (in shares)	11,748	11,689	11,724	11,649
Diluted (in shares)	11,813	11,777	11,796	11,758
Dividends declared (in dollars per share)	$ 0.12	$ 0.11	$ 0.36	$ 0.33
Industrial
Net sales:
Total net sales	$ 158,499	$ 156,721	$ 484,924	$ 438,919
Income from operations	14,350	18,351	50,994	46,316
Agricultural
Net sales:
Total net sales	59,797	61,464	168,129	179,182
Income from operations	6,140	6,608	12,546	18,047
European
Net sales:
Total net sales	53,533	39,387	165,896	134,683
Income from operations	$ 3,965	$ 3,290	$ 12,870	$ 12,033