Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities:
Net income	$ 12,693	$ 16,062
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,935	13,203
Amortization of debt issuance costs	437	627
Loss (gain) on disposal of assets	5	(8)
Share-based compensation expense	1,666	1,394
Gain on settlement of long-term note receivable		(173)
Changes in operating assets and liabilities:
Accounts receivable	(13,412)	3,097
Inventories	(1,408)	(161)
Accounts payable	5,591	(12,479)
Other assets and liabilities	7,153	1,100
Net cash provided by operating activities	25,660	22,662
Investing Activities:
Acquisition of property, plant and equipment	(9,057)	(12,402)
Proceeds received from long-term note receivable		1,945
Proceeds from disposals of property, plant and equipment	3	356
Net cash used by investing activities	(9,054)	(10,101)
Financing Activities:
Repayment of short-term debt	(87)	(177)
Principal payment on capital lease	(100)	(87)
Proceeds from long-term debt		6,298
Repayment of long-term debt	(30,715)	(9,212)
Dividends paid	(2,073)
Proceeds from issuance of stock	1,948	21
Net cash used by financing activities	(31,027)	(3,157)
Effect of exchange rate changes on cash flows	(101)	272
Net Change in Cash	(14,522)	9,676
Cash at Beginning of Period	18,990	4,536
Cash at End of Period	$ 4,468	$ 14,212