Business Segment Data (Details) - Business Segment Data - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenues	$ 11,350,000	$ 9,445,000
Operating (loss) income:
Operating loss	(4,233,000)	(4,616,000)
Interest expense, net	(578,000)	(425,000)
Loss on foreign currency remeasurement	(18,000)	(57,000)
Gain on extinguishment of debt	77,000	137,000
Pension (expense) benefit	(181,000)	111,000
Loss before income taxes	(4,933,000)	(4,850,000)
Income tax (expense) benefit	(35,000)	7,000
Net loss	(4,968,000)	(4,843,000)
Assets:
Assets	8,651,000	7,055,000
Depreciation and amortization:
Depreciation and amortization	495,000	540,000
Capital expenditures:
Capital expenditures		190,000
Operating Segments [Member]
Assets:
Assets	8,127,000	7,012,000
Corporate, Non-Segment [Member]
Operating (loss) income:
Operating loss	(1,230,000)	(836,000)
Assets:
Assets	524,000	43,000
Depreciation and amortization:
Depreciation and amortization	1,000	1,000
Capital expenditures:
Capital expenditures		1,000
Digital Product Sales [Member]
Revenues:
Revenues	9,418,000	7,378,000
Digital Product Sales [Member] | Operating Segments [Member]
Revenues:
Revenues	9,418,000	7,378,000
Operating (loss) income:
Operating loss	(4,285,000)	(5,169,000)
Assets:
Assets	6,379,000	5,231,000
Depreciation and amortization:
Depreciation and amortization	249,000	251,000
Capital expenditures:
Capital expenditures		173,000
Digital Product Lease And Maintenance [Member]
Revenues:
Revenues	1,932,000	2,067,000
Digital Product Lease And Maintenance [Member] | Operating Segments [Member]
Revenues:
Revenues	1,932,000	2,067,000
Operating (loss) income:
Operating loss	1,282,000	1,389,000
Assets:
Assets	1,748,000	1,781,000
Depreciation and amortization:
Depreciation and amortization	245,000	288,000
Capital expenditures:
Capital expenditures		$ 16,000