Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	$ 138	$ (1,554)
Adjustments to Reconcile Net Income (Loss) to Net Cash
Depreciation and Amortization	486	477
Compensation on Stock-Based Awards	48	21
Compensation on Equity Appreciation Rights	0	13
Loss on Held for Sales	0	28
(Gain) Loss on Disposal of Property and Equipment	(15)	31
Change in Accounts Receivable Allowance	38	379
Change in Inventory Reserves	97	(394)
Changes in Current Operating Items
Accounts Receivable	(188)	2,732
Inventories	(1,852)	(2,777)
Contract Assets	585	(778)
Prepaid Expenses and other Curent Assets	(263)	(299)
Income Taxes	(168)	(796)
Accounts Payable	1,302	1,553
Accrued Payroll and Commissions	845	721
Other Accrued Liabilities	438	(253)
Net Cash Provided By (Used In) Operating Activities	1,491	(896)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from Sale of Property and Equipment	15	0
Purchase of Intangible Asset	0	(64)
Purchases of Property and Equipment	(529)	(208)
Net Cash Used In Investing Activities	(514)	(272)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Line of Credit	(1,434)	(1,128)
Principal Payments on Long-Term Debt	0	(125)
Principal Payments on Financing Leases	(184)	(162)
Stock Option Excercises	33	0
Net Cash Provided Used In Financing Activities	(1,585)	(1,415)
Effect of Exchange Rate Changes on Cash	0	1
Net Change in Cash and Cash Equivalents	(608)	(2,582)
Cash and Cash Equivalents - Beginning of Year	2,225	3,564
Cash and Cash Equivalents - End of Year	1,617	982
Reconciliation of cash and restricted cash reported within the consolidated balance sheets
Cash	841	384
Restricted Cash	776	598
Total Cash and restricted cash reported in the consolidated statements of cash flows	1,617	982
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	94	59
Cash Paid During the Period for Income Taxes	0	97
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	0	214
Property Acquired Under Operating Lease	$ 0	$ 858