CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 644	$ (1,165)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	3,633	3,979
Amortization of intangibles	1,413	1,725
Amortization of debt issue costs	113	110
Gain on sale of assets	(7)	0
Non-cash stock based compensation	1,624	1,130
Changes in assets and liabilities, net:
(Increase) decrease in accounts receivable, net of write-offs	2,299	(5,741)
(Increase) decrease in inventories	(41)	283
(Increase) in prepaid expenses	(1,990)	(1,321)
(Increase) decrease in other current assets	(158)	6
Increase (decrease) in accounts payable, accrued and other liabilities	6,782	(692)
Net cash provided by (used in) operating activities	14,312	(1,686)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(4,666)	(3,007)
Net cash used in investing activities	(4,666)	(3,007)
CASH FLOWS FROM FINANCING ACTIVITIES
Advances from revolving credit facility, net	0	5,006
Repayment of capital lease obligations, loans	(1,394)	(1,263)
Repayment of term loan and revolving credit facility, net	(6,338)	(932)
Issuance of common stock	483	505
Payments of equity issue costs	0	(112)
Net cash (used in) provided by financing activities	(7,249)	3,204
Effects of foreign exchange rate changes on cash and cash equivalents	(45)	0
Net change in cash and cash equivalents	2,352	(1,489)
Cash and cash equivalents, beginning of period	12,821	12,525
Cash and cash equivalents, end of period	15,173	11,036
Supplemental disclosure of cash flow information:
Interest paid	1,396	1,257
Income taxes paid	7	5
Supplemental disclosure of non-cash investing and financing information:
Equipment acquired under capital lease/loan obligations	$ 3,355	$ 1,898