CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Operating activities
Net loss	$ (1,760)	$ (2,953)	$ (1,504)	$ (1,657)	$ (6,000)	$ (4,370)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation					4,735	4,670
Amortization of intangible assets					2,420	965
Provision for bad debt, net					(29)	113
Stock-based compensation					382	416
Gain on disposal of discontinued operations					0	(350)
Amortization of loan issuance costs					248	48
Debt issuance costs write-off	0		0		0	151
Financing costs write-off					0	273
Loss (Gain) on sale of assets					142	(56)
Deferred income taxes, net					68	(75)
Other, net					(33)	(29)
Changes in operating assets and liabilities:
Accounts receivable					2,850	(1,380)
Inventories					(1,735)	(1,081)
Other assets					(852)	(506)
Accounts payable					(2,109)	242
Accrued compensation					(845)	(267)
Deferred revenue					494	142
Operating lease liabilities					(12)	(46)
Other liabilities					(1,604)	375
Net cash used in operating activities					(1,880)	(765)
Investing activities
Purchases of property and equipment					(646)	(1,182)
Purchase of real estate from related and third parties					0	(5,180)
Proceeds from sale of property and equipment					156	1,496
Proceeds from sales of equity securities					0	140
Payments to acquire interest in joint ventures					0	(1,000)
Net cash used in investing activities					(490)	(5,726)
Financing activities
Proceeds from borrowings					85,648	66,640
Repayment of debt					(84,940)	(59,057)
Repayment of Gerber acquisition loan					0	(3,000)
Loan issuance costs					(317)	(421)
Net proceeds from sale of common stock and warrants					4,203	0
Proceeds from exercise of over-allotment options and warrants					892	0
Proceeds from issuance of preferred stock					0	3,000
Fees paid on issuance of preferred stock					(3)	(150)
Taxes paid related to net share settlement of equity awards					(13)	(24)
Repayment of obligations under finance leases					(725)	(626)
Net cash provided by financing activities					4,745	6,362
Net increase (decrease) in cash, cash equivalents, and restricted cash					2,375	(129)
Cash, cash equivalents, and restricted cash at beginning of period		$ 2,061		$ 1,802	2,061	1,802	$ 1,802
Cash, cash equivalents, and restricted cash at end of period	$ 4,436		$ 1,673		$ 4,436	$ 1,673	$ 2,061