Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Activities:
Net income	$ 5,909	$ 5,507
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation and amortization	4,457	4,035
Amortization of debt issuance costs	191	199
Deferred income taxes	110
Gain on disposal of assets	(8)	(1)
Non-cash gain from deconsolidation of bankrupt subsidiary		(209)
Share-based compensation expense	358
Change in value of long-term note receivable	(173)	(86)
Changes in operating assets and liabilities:
Accounts receivable	(8,726)	(22,071)
Inventories	604	(596)
Accounts payable	(5,621)	(1,356)
Other assets and liabilities	1,751	(3,136)
Net cash used by operating activities	(1,148)	(17,714)
Investing Activities:
Acquisition of property, plant and equipment	(4,079)	(3,788)
Cash lost on deconsolidation of Eltmann subsidiary		(979)
Proceeds received from long-term note receivable	1,945
Proceeds from disposals of property, plant and equipment	355	1
Net cash used by investing activities	(1,779)	(4,766)
Financing Activities:
Proceeds (repayment) of short-term debt	(789)	1,693
Principal payment on capital lease	(25)	(16)
Proceeds from long term debt	10,000	17,200
Proceeds from issuance of stock		1,687
Debt issuance costs paid		(334)
Net cash provided by financing activities	9,186	20,230
Effect of exchange rate changes on cash flows	1,012	1,266
Net Change in Cash	7,271	(984)
Cash at Beginning of Period	4,536	5,556
Cash at End of Period	$ 11,807	$ 4,572