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Note 2 - Supplemental Balance-sheet Information (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Financing Receivable, Past Due [Table Text Block]

		December 31, 2021				December 31, 2020
Contract and other receivables		$	1,853			$	922
Allowance for doubtful accounts			(7	)			(7	)
		$	1,846			$	915

Schedule of Inventory, Current [Table Text Block]

		December 31, 2021				December 31, 2020
Materials and component parts		$	150			$	149
Reseller inventories			701				52
Reserve			(4	)			(4	)
Inventories, net		$	847			$	197

Schedule of Intangible Assets and Goodwill [Table Text Block]

		December 31, 2021								December 31, 2020
		Gross								Gross
		Carrying				Accumulated				Carrying				Accumulated
		Amount				Amortization				Amount				Amortization
Intangible assets not subject to amortization:
Goodwill		$	780				-			$	780				-
Intangible assets subject to amortization:
Customer relationships		$	906			$	(780	)		$	906			$	(690	)
Acquired software		$	234			$	(234	)		$	234			$	(234	)

Schedule of Goodwill [Table Text Block]

		December 31, 2021				December 31, 2020
Facilities unit		$	643			$	643
Systems Integration unit			137				137
Total		$	780			$	780

Property, Plant and Equipment [Table Text Block]

	Estimated Useful				December 31,
	Lives				2021				2020
	(years)
Trade equipment		5			$	144			$	144
Leasehold improvements	2	–	5			725				725
Furniture and fixtures		7				16				16
Computer equipment and software		3				2,135				2,071
						3,020				2,956
Less accumulated depreciation						(2,739	)			(2,294	)
Property and equipment, net					$	281			$	662

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

		December 31,
		2021				2020
Accounts payable		$	5,472			$	12,550
Legal settlement			500				-
Accrued expenses			703				453
Compensation, benefits and related taxes			270				358
Other accrued expenses			71				13
Total accounts payable and accrued expenses		$	7,016			$	13,374

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