Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS PROVIDED BY OPERATING ACTIVITIES
Net Income	$ 2,522	$ 2,391
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Depreciation and Amortization	1,539	1,440
Compensation on Stock-Based Awards	299	234
Deferred Income Taxes	288	0
Change in Inventory Reserves	(8)	(54)
Other, Net	(169)	(86)
Changes in Current Operating Items
Accounts Receivable	(162)	(1,115)
Employee Retention Credit Receivable	2,650	0
Inventories	899	(4,402)
Contract Assets	(1,780)	(1,188)
Prepaid Expenses	(588)	(213)
Income Tax Receivable	(388)	(22)
Income Tax Payable	(696)	(45)
Accounts Payable	(1,636)	1,659
Accrued Payroll and Commissions	(810)	1,071
Customer Deposits	345	934
Other Accrued Liabilities	(124)	396
Net Cash Provided By Operating Activities	2,181	1,000
Net Cash Provided by (Used in) Investing Activities [Abstract]
Proceeds from Sale of Property and Equipment	0	15
Purchase of Intangible Asset	0	(43)
Purchases of Property and Equipment	(1,121)	(1,687)
Net Cash Used In Investing Activities	(1,121)	(1,715)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from Line of Credit	95,783	88,673
Payments to Line of Credit	(98,035)	(87,816)
Principal Payments on Financing Leases	(291)	(326)
Stock Option Excercises	155	51
Net Cash (Used In) Provided By Financing Activities	(2,388)	582
Effect of Exchange Rate Changes on Cash	(32)	0
Net Change in Cash and Restricted Cash	(1,360)	(133)
Cash and Restricted Cash - Beginning of Year	2,481	2,225
Cash and Restricted Cash - End of Period	1,121	2,092
Reconciliation of cash and restricted cash reported within the consolidated balance sheets
Cash	699	1,300
Restricted Cash	422	792
Total Cash and restricted cash reported in the consolidated statements of cash flows	1,121	2,092
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	388	328
Cash Paid During the Period for Income Taxes	1,242	122
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	$ 23	$ 332