Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Income from continuing operations	$ 14,764	$ 22,067	$ 20,006
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Deferred income taxes	(4,563)	3,484	1,130
Depreciation and amortization	12,973	12,007	9,219
Equity in Income/(Loss) of nonconsolidated investment	(837)	(707)	213
Loss on sale of property, plant and equipment	388	145	10
Gain on marketable securities			(1,364)
Deferred gain amortization on sale-leaseback	(456)	(1,081)	(215)
Share-based compensation	1,989	1,958	1,944
Unrealized loss on derivative mark-to-market			11
Excess tax benefit from share-based compensation	(199)	(425)	(961)
Change in operating assets and liabilities:
Accounts receivable	6,823	1,616	9,963
Inventories	(17,644)	(1,932)	29,954
Other current assets	(243)	923	8
Prepaid income tax	4,339	(2,141)	478
Other noncurrent assets	(194)	(136)	88
Accounts payable - trade	1,241	6,128	(13,868)
Deferred revenue	1,467	(9,609)	667
Accrued payroll and employee benefits	(594)	(566)	(1,201)
Other current liabilities	6,655	(2,161)	897
Other liabilities	381	1,925	(841)
Net Cash Provided by Continuing Operating Activities	26,290	31,495	56,138
Net Cash Provided (Used) by Discontinued Operations	176	(825)	3,344
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from the sale of property, plant and equipment	24	41	10,179
Capital expenditures on property, plant and equipment	(7,160)	(11,733)	(5,920)
Acquisitions		(8,952)	(90,807)
Capital contributions to equity method investment		(800)	(800)
Net Cash Used by Continuing Investing Activities	(7,136)	(21,444)	(87,348)
Net Cash Provided/(Used) by Discontinued Operations	10,548	(206)	(240)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of other long-term debt	(2,373)	(2,366)	(9,738)
Repayments of term loan			(13,095)
Proceeds from exercise of stock options and stock awards	122	207	451
Treasury stock acquisitions		(6,480)	(17)
Cash dividends on common stock paid to shareholders	(1,029)	(1,022)
Excess tax benefit from share-based compensation	199	425	961
Net Cash Used by Financing Activities	(3,081)	(9,236)	(21,438)
Net Cash Used by Discontinued Financing Activities			(550)
Effect of exchange rate changes on cash and cash equivalents	940	(857)	49
Net Increase/(Decrease) in Cash and Cash Equivalents	27,737	(1,073)	(50,045)
Cash and Cash Equivalents at Beginning of Period	73,727	74,800	124,845
Cash and Cash Equivalents at End of Period	101,464	73,727	74,800
Supplemental Disclosure of Cash Flow Information:
Interest Paid	405	505	806
Income Taxes Paid	11,999	9,395	10,805
Accrued Portec Purchase Price Funded In January 2011			8,952
Portec Available-for-Sale Securiteis Redeemed as part of Acquisition			2,158
Capital Expenditures Funded through Capital Leases			$ 199