Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows From Operating Activities
Net income (loss)	$ 1,178	$ 790
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Depreciation and amortization	1,322	840
Gain on sale of assets	(30)	(106)
Allowance for doubtful accounts	115	39
Stock compensation	223	256
Deferred taxes	1	(97)
(Increase) decrease in
Accounts receivable - billed	99	(1,163)
Accounts receivable - unbilled	775	(246)
Inventories	993	254
Prepaid expenses and other assets	(25)	(44)
Refundable income taxes	783	33
Increase (decrease) in
Accounts payable - trade	(973)	(674)
Accrued expenses and other liabilities	(562)	(63)
Deferred revenue	358	85
Accrued compensation	(557)	(409)
Accrued income taxes payable	0	339
Deferred buy-back lease obligation	(201)	5,389
Customer deposits	(508)	495
Net cash provided by (used in) operating activities	2,990	5,718
Cash Flows From Investing Activities
Purchases of investment securities available-for-sale	(24)	(24)
Purchases of property and equipment	(3,392)	(1,737)
Deferred buy-back lease asset	(358)	(4,400)
Proceeds from sale of fixed assets	145	113
Net cash used in investing activities	(3,629)	(6,048)
Cash Flows From Financing Activities
Proceeds from the line-of-credit construction draw	500	0
Proceeds from long-term borrowings	49	350
Repayments of long-term borrowings	(556)	(479)
Dividends paid on common stock	(281)	(256)
Proceeds from options exercised	0	12
Net cash used in financing activities	(288)	(373)
Net decrease in cash	(927)	(703)
Cash, beginning of period	1,946	3,390
Cash, end of period	1,019	2,687
Cash payments for interest	127	135
Cash payments for income taxes	$ 41	$ 49