Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net earnings	$ 7,546	$ 8,749
Adjustments to reconcile net earnings to net cash provided by operations:
Depreciation	3,175	2,918
Amortization	3,537	2,945
Deferred income taxes	1	(12)
Noncurrent employee benefits	94	115
Stock-based compensation expense	471	366
Changes in:
Receivables	(4,919)	(5,958)
Inventories	265	7,423
Prepaid expenses and other assets	(1,586)	(2,819)
Liabilities other than debt	(1,809)	(1,319)
Total adjustments	(771)	3,659
Net cash provided by operations	6,775	12,408
Investing activities:
Property, plant and equipment expenditures	(3,043)	(3,806)
Acquisitions, net of cash acquired and future payments	0	(200)
Net cash used for investing activities	(3,043)	(4,006)
Financing activities:
Net increase in short-term debt	3,500	126
Dividends paid	(3,770)	(3,336)
Proceeds from exercise of stock options	231	654
Repurchase of treasury stock	(1,619)	(2,242)
Issuance of treasury stock	65	89
Net cash used for financing activities	(1,593)	(4,709)
Effect of foreign exchange rates on cash	229	280
Increase in cash	2,368	3,973
Cash – beginning of period	11,164	7,338
Cash – end of period	$ 13,532	$ 11,311