Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating Activities:
Net income	$ 16,062	$ 16,034
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,203	12,624
Amortization of debt issuance costs	627	620
Deferred income taxes	452
Gain on disposal of assets	(8)	(20)
Non-cash gain from deconsolidation of bankrupt subsidiary		(209)
Share-based compensation expense	1,394	469
Change in value of long-term note receivable	(173)	(167)
Changes in operating assets and liabilities:
Accounts receivable	3,097	(12,696)
Inventories	(161)	(4,042)
Accounts payable	(12,479)	(8,319)
Other assets and liabilities	648	(1,035)
Net cash provided by operating activities	22,662	3,259
Investing Activities:
Acquisition of property, plant and equipment	(12,402)	(14,829)
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	356	111
Net cash used by investing activities	(10,101)	(15,697)
Financing Activities:
Proceeds (repayment) of short-term debt	(177)	3,529
Principal payment on capital lease	(87)	(49)
Proceeds from long term debt	6,298	13,486
Repayment of long-term debt	(9,212)
Proceeds from issuance of stock	21	2,383
Debt issuance costs paid		(400)
Net cash provided (used) by financing activities	(3,157)	18,949
Effect of exchange rate changes on cash flows	272	14
Net Change in Cash	9,676	6,525
Cash at Beginning of Period	4,536	5,556
Cash at End of Period	$ 14,212	$ 12,081