Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net Loss	$ (1,546)	$ (1,228)
Adjustments to Reconcile Net Loss to Net Cash
Depreciation	2,002	1,926
Amortization	191	295
Compensation on Stock-Based Awards	68	261
Compensation on Equity Appreciation Rights	108
Goodwill, Impairment Loss	2,375	0
Deferred Taxes		20
Change in Accounts Receivable Allowance	8	113
Change in Inventory Reserves	672	374
(Gain) loss on Disposal of Property and Equipment	(3,821)	32
Changes in Current Operating Items
Accounts Receivable	3,019	1,413
Inventories	(216)	2,344
Contract Assets	1,760	(1,228)
Prepaid Expenses and other Curent Assets	651	(1,015)
Income Taxes	(675)	401
Accounts Payable	(2,950)	(3,680)
Accrued Payroll and Commissions	(623)	746
Other Accrued Liabilities	340	223
Net Cash Provided by Operating Activities	1,363	997
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from Sale of Property and Equipment	6,019
Purchase of Intangible Asset	(34)	(39)
Purchases of Property and Equipment	(485)	(719)
Net Cash Provided by (Used in) Investing Activities	5,500	(758)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Line of Credit	(6,760)	823
Proceeds from Long-Term Debt	6,077
Principal Payments on Long-Term Debt	(2,684)	(856)
Principal Payments on Financing Leases	(592)	(369)
Stock Option Excercises		7
Share Repurchases		(130)
Net Cash Used in Financing Activities	(3,959)	(525)
Effect of Exchange Rate Changes on Cash		(1)
Net Change in Cash	2,904	(287)
Cash - Beginning of Year	660	947
Cash - End of Year	3,564	660
Reconciliation of cash and restricted cash reported within the consolidated balance sheets
Cash	352	351
Restricted Cash	3,212	309
Cash - End of Year	3,564	660
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	577	980
Cash Paid for Income Taxes	855	194
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	175	4
Property Acquired under Operating Lease	4,999
Equipment Acquired under Finance Lease	$ 395	$ 1,089