Details of Certain Financial Statement Components and Supplemental Disclosures of Cash Flow Information and Non-Cash Activities (Tables)

12 Months Ended

Dec. 31, 2019

Text Block [Abstract]

Components of Accounts Receivable

	December 31, 2019			December 31, 2018
Accounts receivable:
Accounts receivable-trade	$	347,000		$	3,000
Less: allowance for doubtful accounts		(3,000	)		(3,000	)
	$	344,000		$	—

Components of Inventories

	December 31, 2019		December 31, 2018
Inventories:
Raw materials	$	152,000	$	161,000
Reserve for raw materials		—		—
Work-in-process		111,000		12,000
Reserve for work-in-process		—		—
Finished goods		—		—
Reserve for finished goods		—		—
	$	263,000	$	173,000

Components of Property and Equipment

	December 31, 2019			December 31, 2018
Property and Equipment:
Equipment	$	11,911,000		$	11,911,000
Leasehold improvements		1,065,000			1,065,000
Furniture and fixtures		205,000			205,000
		13,181,000			13,181,000
Less: accumulated depreciation and amortization		(12,948,000	)		(12,172,000	)
	$	233,000		$	1,009,000

Components of Patents and Licenses

	December 31, 2019			December 31, 2018
Patents, Licenses and Purchased Technology:
Patents pending	$	—		$	—
Patents issued		1,712,000			1,712,000
Less accumulated amortization		(1,071,000	)		(1,026,000	)
Net patents issued		641,000			686,000
	$	641,000		$	686,000

Components of Accrued Expenses and Other Long Term Liabilities

	December 31, 2019			December 31, 2018
Accrued Expenses and Other Long Term Liabilities:
Salaries payable	$	23,000		$	119,000
Compensated absences		211,000			195,000
Compensation related		4,000			6,000
Warranty reserve		8,000			8,000
Operating lease		152,000			39,000
Other		54,000			189,000
Total		452,000			556,000
Less current portion		(440,000	)		(539,000	)
Long-term portion	$	12,000		$	17,000

Schedule of Warranty Reserve Activity

	2019		2018		2017
Warranty Reserve Activity:
Beginning balance	$	8,000	$	8,000	$	8,000
Additions		—		—		—
Deductions		—		—		—
Ending balance	$	8,000	$	8,000	$	8,000