Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities
Net income	$ 22,683	$ 21,441
Items not affecting use of cash:
Depreciation	25,661	22,287
Amortization of intangible assets	2,953	2,331
Non-cash stock compensation	2,142	2,134
Payments for long-term incentive compensation	0	(333)
Provision for (recovery of) loss on accounts receivable	698	(1,019)
Deferred taxes	4,069	428
Other long-term liabilities	38	2,037
Loss (gain) from asset disposition	584	(628)
Other	202	50
Cash flows provided by (used for) working capital, net of acquisitions:
Accounts receivable	3,908	664
Inventories	(12,443)	(18,611)
Prepaid expenses	(1,509)	(2,563)
Accounts payable and accrued expenses	(2,143)	(4,877)
Net cash provided by operating activities	46,843	23,341
Cash Flows from Investing Activities
Capital expenditures	(20,003)	(15,236)
Acquisition of business, net of cash acquired	(600)	(3,430)
Proceeds from sale of property, plant and equipment	928	1,975
Other	(64)	100
Net cash used for investing activities	(19,739)	(16,591)
Cash Flows from Financing Activities
Repayment of long-term debt	0	(26,333)
Net (repayments of) borrowing on credit facility	(17,324)	20,410
Cash dividends paid	(6,046)	(7,642)
Proceeds from issuance of common stock	5,765	3,026
Tax benefit from options	167	0
Repurchase of common stock	(5,955)	0
Net cash used for financing activities	(23,393)	(10,539)
Foreign exchange rate effect on cash	(655)	3,456
Net increase (decrease) in cash	3,056	(333)
Cash, Beginning balance	3,948	6,801
Cash, Ending balance	$ 7,004