Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows From Operating Activities
Net Loss	$ (1,915)	$ (2)
Adjustments to Reconcile Net Loss to Net Cash
Depreciation and Amortization	1,096	1,108
Compensation on Stock-Based Awards	191	45
Change in Accounts Receivable Allowance	40	(5)
Change in Inventory Reserves	54	73
Changes in Current Operating Items
Accounts Receivable	(646)	(1,886)
Inventories	670	(594)
Contract Assets	(798)	(88)
Prepaid Expenses and Other Current Assets	(395)	(130)
Accounts Payable	(1,087)	3,722
Accrued Payroll and Commissions	596	374
Other Accrued Liabilities	(49)	124
Net Cash (Used in) Provided by Operating Activities	(2,243)	2,741
Cash Flows from Investing Activities
Purchase of Intangible Asset	(25)	(4)
Purchases of Property and Equipment	(545)	(557)
Net Cash Used in Investing Activities	(570)	(561)
Cash Flows from Financing Activities
Net Change in Line of Credit	3,469	(1,361)
Principal Payments on Long-Term Debt	(584)	(545)
Principal Payments on Finance Leases	(96)	(150)
Stock Option Exercises	7
Share Repurchases	(126)	(186)
Net Cash Provided By (Used in) Financing Activities	2,670	(2,242)
Effect of Exchange Rate Changes on Cash		(46)
Net Change in Cash	(143)	(108)
Cash - Beginning of Period	948	779
Cash - Ending of Period	805	671
Reconciliation of cash and restricted cash reported within the condensed consolidated balance sheets
Cash	399	437
Restricted Cash	406	234
Cash - Ending of Period	805	671
Supplemental Disclosure of Cash Flow Information:
Cash Paid During the Period for Interest	477	317
Cash Paid and Refunded During the Period for Income Taxes	(47)	167
Supplemental Noncash Investing and Financing Activities:
Property and Equipment Purchases in Accounts Payable	$ 180	$ 284