Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net loss	$ (12,206)	$ (8,339)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation	8,047	8,580
Impairment of property, plant and equipment	1,026	2,613
Non-cash compensation cost	870	1,024
Deferred income taxes	(253)	1,614
Other, net	(32)	(156)
Changes in operating assets and liabilities:
Trade accounts receivable, net	6,400	3,573
Prepaid expenses and other assets	(1,144)	1,227
Accounts payable	405	(50)
Income taxes, net	(471)	5,201
Accrued and other liabilities	2,141	(2,791)
Net cash provided by operating activities	4,783	12,496
Investing Activities
Proceeds from disposition of investments available for sale		606
Proceeds from note receivable	330
Purchases of property, plant and equipment	(4,178)	(10,496)
Net cash used in investing activities	(3,848)	(9,890)
Financing Activities
Principal payments on line of credit		(1,776)
Proceeds from line of credit		1,776
Proceeds from issuance of common stock	171	198
Principal payments on capital lease obligations	(43)	(105)
Net cash provided by financing activities	128	93
Effect of exchange rate changes on cash	348	(610)
Net increase in cash and cash equivalents	1,411	2,089
Cash and cash equivalents at beginning of period	18,740	19,591
Cash and cash equivalents at end of period	20,151	21,680
Supplemental Disclosure of Cash Flow Information
Cash paid for interest	21	36
Income taxes paid	$ 370	$ 216