CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES
Net income	$ 1,430	$ 1,630	$ 2,940
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	7,411	6,818	6,677
Loss on disposal of assets	0	0	15
Non cash lease expense	256	0	0
Loss on write down investment in equity securities	0	0	579
Amortization of accrued interest on lease financing	0	0	80
Deferred income taxes	(444)	48	(1,266)
Accrued interest on lease financing	29	39	33
Stock-based compensation expense	230	223	323
Interest expense associated with lease liabilities	76	0	0
Changes in operating assets and liabilities:
Receivables	(1,187)	(420)	(860)
Prepaid expenses and other assets	260	(231)	(793)
Accounts payable, accrued liabilities and deferred revenue	28	115	125
Lease liability	(332)	0	0
Income taxes payable	130	0	0
Net insurance proceeds receivable	160	(160)	0
Net cash from operating activities	8,047	8,062	7,853
INVESTING ACTIVITIES
Payment for purchase of property and equipment	(990)	(1,577)	(803)
Proceeds from insurance	0	51	0
Proceeds from sale of equipment	0	0	150
Net cash (used in) investing activities	(990)	(1,526)	(653)
FINANCING ACTIVITIES
Principal payments on long-term debt	(1,980)	(2,467)	(2,314)
Principal payments on finance leases	(4,142)	(4,089)	(4,954)
Distributions to non-controlling interests	(939)	(690)	(666)
Proceeds from warrants and options exercised	42	0	115
Principal payments on short-term financing	(51)	0	0
Net cash (used in) financing activities	(7,070)	(7,246)	(7,819)
Net change in cash and cash equivalents	(13)	(710)	(619)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of year	1,792	2,502	3,121
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of year	1,779	1,792	2,502
SUPPLEMENTAL CASH FLOW DISCLOSURE
Cash paid for interest	1,318	1,612	1,574
Cash paid for income taxes	397	459	126
SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Acquisition of equipment with lease financing	1,293	1,679	2,153
Acquisition of equipment with long-term debt financing	0	1,853	992
Acquisition of insurance with short-term financing	526	0	0
Interest capitalized to property and equipment	110	115	138
Insurance proceeds receivable and due	0	$ 977	$ 0
Right of use assets and lease liabilities	$ 1,362