CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019
Operating activities:
Net income (loss)	$ 87	$ (68)
Adjustments to reconcile net income (loss) to net cash from operating activities
Depreciation and amortization	1,231	1,676
Non cash lease expense	74	67
Deferred income taxes	(16)	(28)
Stock-based compensation expense	107	56	$ 108
Interest expense associated with lease liabilities	12	17
Changes in operating assets and liabilities:
Receivables	(497)	848
Prepaid expenses and other assets	551	557
Accounts payable, accrued liabilities and deferred revenue	1,294	383
Income taxes payable (receivable)	26	(35)
Lease liabilities	(86)	(84)
Net cash provided by operating activities	2,783	3,389
Investing activities:
Payment for purchase of property and equipment	(1,065)	(195)
Net cash used in investing activities	(1,065)	(195)
Financing activities:
Principal payments on long-term debt	(276)	(554)
Principal payments on finance leases	(638)	(912)
Principal payments on short-term financing	(116)	(158)
Distributions to non-controlling interests	0	(326)
Net cash used in financing activities	(1,030)	(1,950)
Net change in cash, cash equivalents, and restricted cash	688	1,244
Cash, cash equivalents, and restricted cash at beginning of period	4,325	1,779
Cash, cash equivalents, and restricted cash at end of period	5,013	3,023	$ 1,779
Supplemental cash flow disclosure:
Interest	260	282
Income taxes (refunded) paid	(4)	34
Schedule of non-cash investing and financing activities
Lease reassessment right of use assets and lease liabilities	0	67
Interest capitalized to property and equipment	0	32
Acquisition of equipment with long-term debt financing	$ 0	$ 1,184