Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash Flows From Operating Activities
Net income	$ 26,002	$ 29,962	$ 24,505
Items not affecting use of cash
Depreciation	33,709	29,667	31,245
Amortization of intangible assets	3,563	3,052	2,665
Amortization of deferred financing costs	373	288	304
Non-cash stock compensation	2,557	2,708	2,595
Provision for (recovery of) loss on accounts receivable	1,098	(543)	915
Deferred taxes	(3,934)	1,052	(184)
Other long-term liabilities	709	4,057	4,251
Loss (gain) from asset disposition	749	(1,085)	374
Tax benefit from options	(389)	0	0
Cancellations and terminations of share grants	0	253	0
Other	202	50	50
Payments on performance based compensation	(1,719)	(333)	0
Cash flows provided by (used for) working capital, net of acquisitions:
Accounts receivable	(716)	(2,002)	(8,665)
Inventories	(1,585)	(2,780)	455
Prepaid expenses	581	(2,119)	2,662
Accounts payable and accrued expenses	34,868	(1,475)	3,000
Net cash provided by operating activities	96,068	60,752	64,172
Cash Flows From Investing Activities
Capital expenditures	(30,001)	(26,977)	(21,930)
Acquisition of business, net of cash acquired	(600)	(18,543)	(1,100)
Proceeds from sale of property, plant and equipment	933	3,086	1,089
Other	(273)	(50)	(96)
Net cash used for investing activities	(29,941)	(42,484)	(22,037)
Cash Flows From Financing Activities
Proceeds from long-term debt	11,000	0	0
Repayment of long-term debt	(35,000)	(27,258)	(305)
Net (repayment of) borrowing on credit facility	(24,492)	17,700	(9,383)
Cash dividends paid	(9,103)	(13,006)	(9,523)
Proceeds from issuance of common stock	5,806	3,122	751
Tax benefit from options	389	0	0
Cancellations and terminations of share grants	0	(253)	0
Repurchase of common stock	(8,096)	(4,204)	(20,946)
Shares withheld for employee taxes on equity awards	(684)	0	0
Deferred financing costs	(608)	0	0
Net cash used for financing activities	(60,788)	(23,899)	(39,406)
Foreign Exchange Rate Effect on Cash	(2,748)	2,778	(633)
Net increase (decrease) in cash	2,591	(2,853)	2,096
Cash at January 1	3,948	6,801	4,705
Cash at December 31	6,539	3,948	6,801
Supplemental Disclosures of Cash Flow Information
Interest	4,196	4,008	4,129
Income taxes	$ 12,497	$ 21,375	$ 11,168