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Schedule of Disaggregation of Revenue (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]        
Revenue $ 6,392,000 $ 5,599,000 $ 16,630,000 $ 13,681,000
Printed Products Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 4,935,000 4,846,000 13,221,000 11,466,000
Packaging Printing and Fabrication [Member] | Printed Products Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 4,841,000 4,773,000 12,839,000 11,080,000
Commercial and Security Printing [Member] | Printed Products Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 78,000 55,000 334,000 333,000
Real Property Rental Income [Member] | Printed Products Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 16,000 18,000 48,000 53,000
Commercial Lending Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 7,000 45,000 37,000 192,000
Commercial Lending Revenue Information [Member] | Net Investment Income [Member]        
Segment Reporting Information [Line Items]        
Revenue 7,000 45,000 37,000 192,000
Direct Marketing Revenue [Member]        
Segment Reporting Information [Line Items]        
Revenue       3,000
Direct Marketing Revenue [Member] | Retail Sales [Member]        
Segment Reporting Information [Line Items]        
Revenue       3,000
Biotechnology Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 11,000 1,000 32,000 2,000
Biotechnology Revenue Information [Member] | Retail Internet Sales [Member]        
Segment Reporting Information [Line Items]        
Revenue 11,000 1,000 32,000 2,000
Securities Revenue Information [Member]        
Segment Reporting Information [Line Items]        
Revenue 1,439,000 707,000 3,340,000 2,018,000
Securities Revenue Information [Member] | Rental Income [Member]        
Segment Reporting Information [Line Items]        
Revenue 702,000 478,000 2,099,000 1,281,000
Securities Revenue Information [Member] | Commission Income [Member]        
Segment Reporting Information [Line Items]        
Revenue $ 737,000 $ 229,000 $ 1,241,000 $ 737,000