Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows From Operating Activities
Net Income (Loss)	$ (1,502)	$ 362
Adjustments to Reconcile Net (Loss) Income to Net Cash
Depreciation and Amortization	1,648	1,655
Compensation on Stock-Based Awards	226	80
Deffered Taxes	1	1
Change in Accounts Receivable Allowance	101	(5)
Change in Inventory Reserves	285	118
Changes in Current Operating Items
Accounts Receivable	(158)	(1,619)
Inventories	(237)	(1,959)
Contract Assets	(780)	(617)
Prepaid Expenses and Other Current Assets	(641)	(278)
Accounts Payable	663	4,913
Accrued Payroll and Commissions	(120)	(374)
Other Accrued Liabilities	281	287
Net Cash (Used in) Provided by Operating Activities	(233)	2,564
Cash Flows from Investing Activities
Proceeds from Sale of Property and Equipment		17
Purchase of Intangible Asset	(37)	(3)
Purchases of Property and Equipment	(785)	(999)
Net Cash Used in Investing Activities	(822)	(985)
Cash Flows from Financing Activities
Net Change in Line of Credit	3,165	(445)
Principal Payments on Long-Term Debt	(728)	(819)
Principal Payments on Finance Leases	(251)	(231)
Stock option exercises	7
Share Repurchases	(130)	(229)
Net Cash Provided By (Used In) Financing Activities	2,063	(1,724)
Effect of Exchange Rate Changes on Cash	(2)	(1)
Net Change in Cash	1,006	(146)
Cash - Beginning of Period	948	779
Cash - Ending of Period	1,954	633
Reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets
Cash	160	397
Restricted Cash	1,794	236
Cash - Ending of Period	1,954	633
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	739	507
Cash Paid (Refunded) During the Period for Income Taxes	(83)	167
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	30	304
Equipment Acquired under Finance Lease	$ 607	$ 100