CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Activities
Net income (loss)	$ 395	$ (15,616)	$ (5,460)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	12,250	13,261	10,379
Impairment losses	174	323	0
Provision for Doubtful Accounts	112	132	0
Gain on sale of assets	(3)	(509)	(549)
Share-based compensation expense	1,722	1,469	1,625
Amortization of deferred gain on sale leaseback transaction	0	(168)	(276)
Deferred income taxes	265	210	993
Income tax benefit related to other comprehensive income	(31)	(282)	(117)
Changes in operating assets and liabilities:
Trade accounts receivable, net	(2,343)	(2,580)	(2,444)
Prepaid expenses and other assets	723	(490)	1,389
Accounts payable	(2,331)	764	948
Accrued and other liabilities	4	(1,150)	(2,108)
Net cash (used in) provided by operating activities	10,937	(4,636)	4,380
Investing Activities
Proceeds from note receivable	0	0	645
Proceeds from sale of assets	40	982	1,135
Purchases of property, plant and equipment	(3,797)	(7,722)	(11,661)
Cash paid for acquisitions of businesses	(825)	(18,258)	(3,419)
Net cash used in investing activities	(4,582)	(24,998)	(13,300)
Financing Activities
Proceeds from the issuance of common stock	400	917	159
Proceeds from line of credit	302,711	318,890	170,447
Principal payments on line of credit	(308,900)	(291,316)	(166,807)
Principal payments on other debt	(3,055)	(1,972)	(383)
Net cash provided by (used in) financing activities	(8,844)	26,519	3,416
Effect of exchange rate changes on cash	902	435	(179)
Net decrease in cash and cash equivalents	(1,587)	(2,680)	(5,683)
Cash and cash equivalents at beginning of period	2,626	5,306	10,989
Cash and cash equivalents at end of period	1,039	2,626	5,306
Supplemental Disclosure of Cash Flow Information
Cash paid for interest	1,553	1,601	548
Cash paid for income taxes	564	348	60
Supplemental Disclosure of Noncash Investing Activities
Assets acquired through capital lease and direct financing	$ 54	$ 7,388	$ 4,879