Interim Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales:
Net sales	$ 257,572	$ 240,455	$ 752,784	$ 669,120
Cost of sales	190,800	175,516	559,301	495,338
Gross profit	66,772	64,939	193,483	173,782
Selling, general and administrative expenses	38,523	37,178	117,087	105,463
Income from operations	28,249	27,761	76,396	68,319
Interest expense	(1,399)	(1,414)	(4,233)	(4,241)
Interest income	100	100	309	257
Other income (expense)	(265)	(1,561)	(491)	(2,734)
Income before income taxes	26,685	24,886	71,981	61,601
Provision for income taxes	3,142	8,294	15,084	20,526
Net Income	$ 23,543	$ 16,592	$ 56,897	$ 41,075
Net income per common share:
Basic (in dollars per share)	$ 2.01	$ 1.43	$ 4.88	$ 3.56
Diluted (in dollars per share)	$ 2.00	$ 1.42	$ 4.84	$ 3.52
Average common shares:
Basic (in shares)	11,689	11,586	11,649	11,535
Diluted (in shares)	11,777	11,708	11,758	11,666
Dividends declared (in dollars per share)	$ 0.11	$ 0.10	$ 0.33	$ 0.30
Industrial
Net sales:
Net sales	$ 156,721	$ 132,388	$ 438,919	$ 375,546
Income from operations	18,351	14,941	46,316	38,563
Agricultural
Net sales:
Net sales	61,464	64,923	179,182	170,921
Income from operations	6,608	8,598	18,047	19,315
European
Net sales:
Net sales	39,387	43,144	134,683	122,653
Income from operations	$ 3,290	$ 4,222	$ 12,033	$ 10,441