Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Cash Flows From Operating Activities
Net income (loss)	$ 1,952	$ 1,207
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation and amortization	1,791	1,321
Gain on sale of assets	(58)	(30)
Unrealized (gain) loss	(16)	(29)
Allowance for doubtful accounts	55	115
Stock compensation	0	223
Deferred taxes	(5)	1
(Increase) decrease in
Accounts receivable - billed	2,915	99
Accounts receivable - unbilled	(393)	775
Inventories	78	993
Prepaid expenses and other assets	(96)	(25)
Refundable income taxes	309	783
Increase (decrease) in
Accounts payable - trade	(681)	(973)
Accrued expenses and other liabilities	891	(562)
Deferred revenue	2	358
Accrued compensation	267	(557)
Accrued income taxes	305	0
Deferred buy-back lease obligation	(855)	(201)
Customer deposits	(483)	(508)
Net cash provided by (used in) operating activities	5,978	2,990
Cash Flows From Investing Activities
Purchases of investment securities available-for-sale	(22)	(24)
Purchases of property and equipment	(2,501)	(3,392)
Deferred buy-back lease asset	0	(358)
Proceeds from sale of fixed assets	144	145
Net cash provided by (used in) investing activities	(2,379)	(3,629)
Cash Flows From Financing Activities
Proceeds from the line-of-credit construction draw	0	500
Proceeds from long-term borrowings	5,426	49
Repayments of long-term borrowings	(2,658)	(556)
Dividends paid on common stock	(282)	(281)
Net cash provided by (used in) financing activities	2,486	(288)
Net increase (decrease) in cash	6,085	(927)
Cash, beginning of period	1,364	1,946
Cash, end of period	7,449	1,019
Supplemental Cash Flow information:
Non-cash transaction - right of use asset and lease liability upon lease standard adoption	0	414
Cash payments for interest	166	127
Cash payments for income taxes	$ 1	$ 41

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