CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 264	$ (680)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	7,444	7,906
Amortization of intangibles	2,834	3,450
Amortization of debt issue costs	242	219
Loss on disposal of assets	106	0
Non-cash stock based compensation	3,957	3,052
Changes in assets and liabilities, net:
(Increase) in accounts receivable, net of write-offs	(338)	(6,255)
Decrease in inventories	576	796
(Increase) in prepaid expenses	(2,198)	(720)
(Increase) in other current assets	(977)	(129)
Increase (decrease) in accounts payable, accrued and other liabilities	9,042	(2,797)
Net cash provided by operating activities	20,952	4,842
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(8,943)	(7,864)
Net cash used in investing activities	(8,943)	(7,864)
CASH FLOWS FROM FINANCING ACTIVITIES
Advances from revolving credit facility, net	10,000	4,997
Redemption of preferred stock	(50,096)	0
Repayment of capital lease obligations, loans	(3,014)	(2,754)
Repayment of term loan and revolving credit facility	(7,275)	(1,878)
Issuance of common stock	5,588	1,176
Proceeds from term loan	30,000	0
Payments of debt issue costs	(576)	(112)
Net cash (used in) provided by financing activities	(15,373)	1,429
Effects of foreign exchange rate changes on cash and cash equivalents	(22)	0
Net change in cash and cash equivalents	(3,386)	(1,593)
Cash and cash equivalents, beginning of period	12,821	12,525
Cash and cash equivalents, end of period	9,435	10,932
Supplemental disclosure of cash flow information:
Interest paid	2,703	2,573
Income taxes paid	49	102
Supplemental disclosure of non-cash investing and financing information:
Equipment acquired under capital lease/loan obligations	$ 3,733	$ 2,557