Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash Flows From Operating Activities
Net (Loss) Income	$ (1,375)	$ 14
Adjustments to Reconcile Net (Loss) Income to Net Cash
Depreciation and Amortization	967	1,131
Compensation on Stock-Based Awards	160	75
Change in Accounts Receivable Allowance	116	56
Change in Inventory Reserves	(655)	(92)
Gain on Sale of Assets	(94)	0
Changes in Current Operating Items
Accounts Receivable	(1,153)	(699)
Inventories	(3,719)	(1,105)
Contract Assets	(1,019)	1,260
Prepaid Expenses and Other Current Assets	(286)	357
Income Taxes	(757)	(117)
Accounts Payable	1,576	(728)
Accrued Payroll and Commissions	686	(610)
Other Accrued Liabilities	120	930
Net Cash (Used in) Provided by Operating Activities	(5,433)	472
Cash Flows from Investing Activities
Proceeds from Sale of Property and Equipment	94	0
Purchase of Intangible Asset	(77)	(6)
Purchases of Property and Equipment	(659)	(241)
Net Cash Used in Investing Activities	(642)	(247)
Cash Flows from Financing Activities
Net Change in Line of Credit	4,339	(5,696)
Proceeds from Long-term Debt	0	6,077
Principal Payments on Long-Term Debt	(249)	(238)
Principal Payments on Finance Leases	(326)	(274)
Net Cash Provided By (Used in) Financing Activities	3,764	(131)
Net Change in Cash	(2,311)	94
Cash - Beginning of Period	3,564	660
Cash - Ending of Period	1,253	754
Reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets
Cash	661	345
Restricted Cash	592	409
Cash - Ending of Period	1,253	754
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	81	394
Cash Paid During the Period for Income Taxes	156	72
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	0	237
Right-of-use assets obtained in exchange for lease obligations	858	0
Equipment Acquired under Finance Lease	$ 0	$ 395