Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities:
Net earnings	$ 28,032	$ 19,161	$ 28,662
Adjustments to reconcile net earnings to net cash provided by operations:
Depreciation	7,587	7,144	6,704
Amortization	4,467	2,347	1,755
Deferred income taxes	(551)	(800)	1,981
Contributions to pension	(1,097)	0	(4,700)
Gain on legal settlement	0	0	(740)
Noncurrent employee benefits	122	4,704	2,266
Stock-based compensation expense	1,266	1,470	1,365
Changes in:
Receivables	812	(616)	(3,777)
Inventories	(4,743)	42	(14,886)
Prepaid expenses and other current assets	(905)	(850)	55
Liabilities other than debt	(188)	(1,285)	(289)
Total adjustments	6,770	12,156	(10,266)
Net cash provided by operations	34,802	31,317	18,396
Investing activities:
Property, plant and equipment additions	(8,202)	(5,336)	(9,238)
Acquisitions, net of cash acquired	(51,518)	(3,954)	(7,280)
Investment in emerging technology company	0	0	(1,500)
Acquisition of intangible assets	0	0	(8,028)
Net cash used for investing activities	(59,720)	(9,290)	(26,046)
Financing activities:
Net increase (decrease) in short-term debt	65,136	(11,893)	10,457
Repayments of long-term debt	0	0	(5,429)
Dividends paid	(9,513)	(9,023)	(7,784)
Proceeds from exercise of stock options	382	236	362
Tax benefit on stock options	297	190	525
Repurchase of Common Stock	(30,000)	0	0
Employee benefit stock purchase	0	0	(1,000)
Issuance of treasury stock	477	493	152
Net cash provided by (used for) financing activities	26,779	(19,997)	(2,717)
Effect of foreign exchange rates on cash	(282)	(144)	127
Increase (decrease) in cash	1,579	1,886	(10,240)
Cash — beginning of period	4,975	3,089	13,329
Cash — end of period	6,554	4,975	3,089
Cash paid during the year for:
Income taxes	15,247	10,308	10,884
Interest	$ 1,113	$ 324	$ 330