Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net income	$ 2,871	$ 5,909
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation and amortization	4,531	4,457
Amortization of debt issuance costs	146	191
Loss (gain) on disposal of assets	4	(8)
Share-based compensation expense	430	358
Gain on settlement of long-term note receivable		(173)
Changes in operating assets and liabilities:
Accounts receivable	(15,981)	(8,726)
Inventories	1,048	604
Accounts payable	2,700	(5,621)
Other assets and liabilities	1,755	1,861
Net cash used by operating activities	(2,496)	(1,148)
Investing Activities:
Acquisition of property, plant and equipment	(3,154)	(4,079)
Proceeds received from long-term note receivable		1,945
Proceeds from disposals of property, plant and equipment		355
Net cash used by investing activities	(3,154)	(1,779)
Financing Activities:
Proceeds (repayment) of short-term debt	2,142	(789)
Principal payment on capital lease	(32)	(25)
Proceeds from long term debt		10,000
Repayment of long term debt	(8,000)
Net cash (used) provided by financing activities	(5,890)	9,186
Effect of exchange rate changes on cash flows	197	1,012
Net Change in Cash	(11,343)	7,271
Cash at Beginning of Period	18,990	4,536
Cash at End of Period	$ 7,647	$ 11,807