Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows From Operating Activities
Net income (loss)	$ (38)	$ 331
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation and amortization	572	426
Gain on sale of assets	(36)	(2)
Allowance for doubtful accounts	17	15
Stock compensation	0	84
Deferred taxes	16	3
(Increase) decrease in
Accounts receivable - billed	3,262	2,727
Accounts receivable - unbilled	(646)	750
Inventories	71	514
Prepaid expenses and other assets	41	514
Refundable income taxes	(32)	92
Increase (decrease) in
Accounts payable - trade	(511)	(1,482)
Accrued expenses and other liabilities	(31)	(25)
Deferred revenue	(271)	182
Accrued compensation	(314)	(815)
Deferred buy-back lease obligation	(259)	258
Customer deposits	(585)	(1,113)
Net cash provided by (used in) operating activities	1,256	2,459
Cash Flows From Investing Activities
Purchases of investment securities available-for-sale	(8)	(8)
Purchases of property and equipment	(669)	(1,049)
Deferred buy-back lease asset	0	(358)
Proceeds from sale of fixed assets	41	2
Net cash used in investing activities	(636)	(1,413)
Cash Flows From Financing Activities
Proceeds from the line-of-credit construction draw	0	500
Proceeds from long-term borrowings	2,701	0
Repayments of long-term borrowings	(2,205)	(178)
Dividends paid on common stock	(282)	(281)
Net cash used in financing activities	214	41
Net decrease in cash	834	1,087
Cash, beginning of period	1,364	1,946
Cash, end of period	2,198	3,033
Supplemental Cash Flow information:
Non-cash transaction - right of use asset and lease liability upon lease standard adoption	0	414
Cash payments for interest	56	44
Cash payments for income taxes	$ 1	$ 0