CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 4,613	$ (63)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	5,387	5,468
(Gain) loss on sale or disposal of Property, equipment and leasehold improvements	(494)	146
Deferred income taxes	(629)	(378)
Stock-based compensation	687	554
Other	188	875
Changes in operating assets and liabilities:
Accounts receivable, net	(9,215)	(3,334)
Inventories	(285)	3,323
Other current assets	1,761	(1,093)
Accounts payable and other accrued expenses	7,889	7,299
Accrued salaries, wages and payroll taxes	(1,204)	(49)
Refundable deposits	(241)	(397)
Net cash provided by operating activities	8,457	12,351
Cash flows from investing activities:
Expenditures for Property, equipment and leasehold improvements	(4,284)	(4,920)
Proceeds from sale of Property, equipment and leasehold improvements	22,936	91
Restricted cash from sale of Property, equipment and leasehold improvements	515	0
Net cash provided by (used in) investing activities	19,167	(4,829)
Cash flows from financing activities:
Principal payments on debt and capital lease obligations	(348)	(261)
Net repayments under revolving line of credit	(22,199)	(5,756)
Proceeds from issuances of common stock	206	87
Tax payments related to stock-based awards	(84)	0
Net cash used in financing activities	(22,425)	(5,930)
Increase in Cash, cash equivalents and restricted cash	5,199	1,592
Cash, cash equivalents and restricted cash:
Beginning of period	579	442
End of period	5,778	2,034
Supplemental disclosure of cash flow information:
Cash paid for interest	285	363
Cash paid for income taxes, net	126	176
Supplemental disclosure of non-cash information:
Purchases of Property, equipment and leasehold improvements with capital leases	0	180
Purchases of Property, equipment and leasehold improvements included in Accounts payable at end of period	$ 429	$ 7,550