Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows From Operating Activities
Net Income (Loss)	$ 14	$ (1,915)
Adjustments to Reconcile Net Income (Loss) to Net Cash
Depreciation and Amortization	1,131	1,096
Compensation on Stock-Based Awards	75	191
Change in Accounts Receivable Allowance	56	40
Change in Inventory Reserves	(92)	54
Changes in Current Operating Items
Accounts Receivable	(699)	(646)
Inventories	(1,105)	670
Contract Assets	1,260	(798)
Prepaid Expenses and Other Current Assets	357	(395)
Income Taxes	(117)
Accounts Payable	(728)	(1,087)
Accrued Payroll and Commissions	(610)	596
Other Accrued Liabilities	930	(49)
Net Cash Provided by (Used in) Operating Activities	472	(2,243)
Cash Flows from Investing Activities
Purchase of Intangible Asset	(6)	(25)
Purchases of Property and Equipment	(241)	(545)
Net Cash Used in Investing Activities	(247)	(570)
Cash Flows from Financing Activities
Net Change in Line of Credit	(5,696)	3,469
Proceeds from Long-term Debt	6,077
Principal Payments on Long-Term Debt	(238)	(584)
Principal Payments on Finance Leases	(274)	(96)
Stock Option Exercises		7
Share Repurchases		(126)
Net Cash (Used in) Provided By Financing Activities	(131)	2,670
Net Change in Cash	94	(143)
Cash - Beginning of Period	660	948
Cash - Ending of Period	754	805
Reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets
Cash	345	399
Restricted Cash	409	406
Cash - Ending of Period	754	805
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	394	477
Cash Paid and (Refunded) During the Period for Income Taxes	72	(47)
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	237	180
Equipment Acquired under Finance Lease	$ 395