CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ 1,022	$ (4,754)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	4,955	5,386
(Gain) loss on sale or disposal of Property, equipment and leasehold improvements	(80)	22
Deferred income taxes	1,098	(1,536)
Stock-based compensation	724	1,253
Lease expense	233	101
Other	(1,034)	152
Changes in operating assets and liabilities:
Accounts receivable, net	(12,660)	75
Inventories	(2,060)	(3,349)
Other current assets	(528)	(687)
Accounts payable and other accrued expenses	2,852	9,692
Deferred revenue	(1,627)	(1,624)
Accrued salaries, wages and payroll taxes	(840)	(715)
Refundable deposits	(17)	104
Net cash provided by (used in) operating activities	(7,962)	4,120
Cash flows from investing activities:
Expenditures for Property, equipment and leasehold improvements	(12,718)	(9,440)
Proceeds from sale of Property, equipment and leasehold improvements	161	22
Business combinations and asset acquisitions	(96)	(274)
Net cash used in investing activities	(12,653)	(9,692)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	5,192
Principal payments on debt and finance lease obligations	(701)	(455)
Net borrowings under revolving line of credit	21,163	930
Proceeds from issuances of common stock	92	0
Tax payments related to stock-based awards	(270)	(325)
Net cash provided by financing activities	20,284	5,342
Decrease in Cash and cash equivalents	(331)	(230)
Cash and cash equivalents
Beginning of period	469	1,200
End of period	138	970
Supplemental disclosure of cash flow information:
Cash paid for interest	606	761
Cash received for income taxes, net	11	569
Cash paid for amounts included in measurement of lease liabilities	1,183	1,513
Supplemental disclosure of non-cash information:
Right-of-use assets obtained in exchange for operating lease obligations	0	19,726
Right-of-use assets obtained in exchange for finance lease obligations	0	2,538
Purchases of Property, equipment and leasehold improvements included in Accounts payable at end of period	$ 62	$ 199