Schedule of Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting [Line Items]
Revenue	$ 3,604,000	$ 5,285,000	$ 7,934,000	$ 10,237,000
Printed Products Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	3,274,000	4,288,000	7,438,000	8,286,000
Packaging Printing and Fabrication [Member] \| Printed Products Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	3,029,000	4,157,000	7,071,000	8,018,000
Commercial and Security Printing [Member] \| Printed Products Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	233,000	122,000	344,000	257,000
Real Property Rental Income [Member] \| Printed Products Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	12,000	9,000	23,000	11,000
Commercial Lending Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	6,000	9,000	11,000	30,000
Commercial Lending Revenue Information [Member] \| Net Investment Income [Member]
Segment Reporting [Line Items]
Revenue	6,000	9,000	11,000	30,000
Biotechnology Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	3,000	7,000	10,000	21,000
Biotechnology Revenue Information [Member] \| Retail Internet Sales [Member]
Segment Reporting [Line Items]
Revenue	3,000	7,000	10,000	21,000
Securities Revenue Information [Member]
Segment Reporting [Line Items]
Revenue	321,000	981,000	475,000	1,900,000
Securities Revenue Information [Member] \| Rental Income [Member]
Segment Reporting [Line Items]
Revenue	229,000	699,000	360,000	1,397,000
Securities Revenue Information [Member] \| Commission Income [Member]
Segment Reporting [Line Items]
Revenue	$ 92,000	$ 282,000	$ 115,000	$ 503,000