CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating Activities
Net loss	$ (6,406)	$ (10,488)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	12,527	12,957
Impairment losses	531	3,086
Losses (gains) on disposal of assets	1,074	(45)
Loss on sale leaseback transaction	475
Share-based compensation expense	1,607	1,275
Amortization of deferred gain on sale leaseback transaction	(273)	(47)
Deferred income taxes	166	410
Other, net	0	249
Changes in operating assets and liabilities:
Trade accounts receivable, net	(2,711)	(3,287)
Prepaid expenses and other assets	(2,264)	1,113
Accounts payable	435	(121)
Income taxes, net	(348)	334
Accrued and other liabilities	1,429	(2,525)
Net cash provided by operating activities	6,242	2,911
Investing Activities
Proceeds from note receivable	658	660
Proceeds from sale of assets	3,394	0
Proceeds from sale leaseback transactions	1,337	3,884
Purchases of property, plant and equipment	(8,843)	(7,305)
Cash paid for acquisitions of businesses	(2,097)	0
Net cash used in continuing investing activities	(5,551)	(2,761)
Financing Activities
Proceeds from stock option exercises	141	0
Proceeds from line of credit	41,390	28,641
Principal payments on line of credit	(40,390)	(28,641)
Payment of payroll taxes relating to vesting of restricted stock	(6)	0
Net proceeds from the issuance of common stock	97	103
Principal payments on capital lease obligations	(19)	(96)
Net cash provided by financing activities	1,213	7
Effect of exchange rate changes on cash	(98)	(693)
Net increase (decrease) in cash and cash equivalents	1,806	(536)
Cash and cash equivalents at beginning of period	9,183	9,719
Cash and cash equivalents at end of period	10,989	9,183
Supplemental Disclosure of Cash Flow Information
Cash paid for interest	54	78
Cash paid for income taxes	533	5
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Assets acquired through capital lease	$ 1,413	$ 0