Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows From Operating Activities
Net Income (Loss)	$ 137	$ (363)
Adjustments to Reconcile Net (Loss) Income to Net Cash
Depreciation and Amortization	567	570
Compensation on Stock-Based Awards	39	160
Change in Accounts Receivable Allowance	(10)	24
Change in Inventory Reserves	93	51
Changes in Current Operating Items
Accounts Receivable	(1,644)	(3,001)
Inventories	(1,165)	985
Contract Assets	885	(2,154)
Prepaid Expenses and Other Current Assets	11	(749)
Income Taxes	(88)	(70)
Accounts Payable	2,336	3,209
Accrued Payroll and Commissions	(691)	(611)
Other Accrued Liabilities	(4)	511
Net Cash Provided by (Used in) Operating Activities	466	(1,438)
Cash Flows from Investing Activities
Purchase of Intangible Asset	(6)
Purchases of Property and Equipment	(65)	(396)
Net Cash Used in Investing Activities	(71)	(396)
Cash Flows from Financing Activities
Net Change in Line of Credit	167	2,030
Principal Payments on Long-Term Debt	(124)	(328)
Principal Payments on Financing Leases	(123)	(65)
Share Repurchases		(13)
Net Cash (Used In) Provided By Financing Activities	(80)	1,624
Effect of Exchange Rate Changes on Cash	(1)
Net Change in Cash	314	(210)
Cash - Beginning of Period	660	947
Cash - Ending of Period	974	737
Reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets
Cash	730	310
Restricted Cash	244	427
Cash - Ending of Period	974	737
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	222	224
Cash Paid (Refunded) During the Period for Income Taxes	40
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	23	78
Equipment Acquired under Finance Lease	$ 262