CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net loss	$ (2,953)	$ (1,657)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,593	1,526
Amortization of intangible assets	814	283
Provision for bad debt	32	75
Stock-based compensation	109	112
Amortization of loan issuance costs	31	8
Debt issuance costs written-off	0	151
Loss (gain) on sale of assets	180	(42)
Deferred income taxes	20	(16)
Other, net	26	(28)
Changes in operating assets and liabilities:
Accounts receivable	3,606	(794)
Inventories	481	8
Other assets	154	(454)
Accounts payable	(1,525)	(664)
Accrued compensation	(1,123)	(616)
Deferred revenue	(166)	(273)
Operating lease liabilities	(2)	(11)
Other liabilities	(654)	207
Net cash provided by (used in) operating activities	623	(2,185)
Investing activities
Purchases of property and equipment	(158)	(387)
Proceeds from sale of property and equipment	23	257
Proceeds from sales of equity securities	0	140
Payments to acquire interest in joint ventures	0	(1,000)
Net cash used in investing activities	(135)	(990)
Financing activities
Proceeds from borrowings	31,996	23,517
Repayment of debt	(32,407)	(20,500)
Loan issuance costs	(317)	(381)
Taxes paid related to net share settlement of equity awards	0	(24)
Repayment of obligations under finance leases	(229)	(184)
Net cash (used in) provided by financing activities	(957)	2,428
Net decrease in cash, cash equivalents, and restricted cash	(469)	(747)
Cash, cash equivalents, and restricted cash at beginning of period	2,061	1,813
Cash, cash equivalents, and restricted cash at end of period	$ 1,592	$ 1,066