v3.25.1
Note 12 - Operating Segments - Summarized Financial Information for Reportable Segments (Details) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2025
Mar. 31, 2024
Sep. 30, 2024
Revenues $ 18,176,000   $ 16,571,000   $ 35,880,000 $ 32,564,000  
Salaries and employee benefits 12,706,000   11,803,000   24,742,000 23,186,000  
Stock-based compensation 65,000       89,000    
Decrease to the long-term supplemental compensation accrual (450,000)   (410,000)   (635,000) (830,000)  
Others 4,892,000   4,545,000   9,979,000 8,952,000  
Total operating expenses 17,213,000   15,938,000   34,175,000 31,308,000  
Income from operations 963,000   633,000   1,705,000 1,256,000  
Dividends and interest income 1,178,000   1,217,000   2,362,000 2,786,000  
Rental income 9,000       9,000    
Increase in fair value of derivative asset 88,000       88,000    
Net unrealized losses on non-qualified compensation plan (3,000)   72,000   (53,000) 72,000  
Net realized and unrealized gains on marketable securities 59,386,000   19,764,000   72,799,000 34,454,000  
Pretax income 61,270,000   20,620,000   76,165,000 36,360,000  
Income tax provision (16,600,000)   (5,205,000)   (20,600,000) (8,330,000)  
Net income 44,670,000 $ 10,895,000 15,415,000 $ 12,615,000 55,565,000 28,030,000  
Total assets 468,050,000   335,747,000   468,050,000 335,747,000 $ 403,763,000
Capital expenditures     18,000     23,000  
Real Estate Bank Loan Secured by Logan Office [Member]              
Interest expense on margin loans and others (9,000)   (10,000)   (18,000) (21,000)  
Net realized and unrealized gains on marketable securities           34,454,000  
Margin Account [Member]              
Interest expense on margin loans and others (342,000)   (1,056,000)   (727,000) (2,187,000)  
Net unrealized losses on non-qualified compensation plan           72,000  
Net realized and unrealized gains on marketable securities         72,799,000    
Traditional Business [Member]              
Revenues 4,380,000   4,112,000   8,471,000 7,999,000  
Journal Technologies [Member]              
Revenues 13,796,000   12,459,000   27,409,000 24,565,000  
Advertising [Member]              
Revenues 2,565,000   2,316,000   4,844,000 4,403,000  
Subscription and Circulation [Member]              
Revenues 1,047,000   1,099,000   2,127,000 2,194,000  
Advertising Service Fees and Other [Member]              
Revenues 768,000   697,000   1,500,000 1,402,000  
License and Maintenance [Member]              
Revenues 7,501,000   6,854,000   15,026,000 13,411,000  
Consulting Fees [Member]              
Revenues 2,664,000   3,199,000   5,263,000 6,501,000  
Service, Other [Member]              
Revenues 3,631,000   2,406,000   7,120,000 4,653,000  
Operating Segments [Member] | Traditional Business [Member]              
Revenues 4,380,000   4,112,000   8,471,000 7,999,000  
Salaries and employee benefits 2,520,000   2,624,000   5,010,000 5,173,000  
Stock-based compensation 10,000       14,000    
Decrease to the long-term supplemental compensation accrual (450,000)   (380,000)   (635,000) (800,000)  
Others 1,415,000   1,294,000   2,911,000 2,765,000  
Total operating expenses 3,495,000   3,538,000   7,300,000 7,138,000  
Income from operations 885,000   574,000   1,171,000 861,000  
Pretax income 885,000   574,000   1,171,000 861,000  
Income tax provision (240,000)   (145,000)   (315,000) (200,000)  
Net income 645,000   429,000   856,000 661,000  
Total assets 13,519,000   14,807,000   13,519,000 14,807,000  
Capital expenditures     18,000     23,000  
Operating Segments [Member] | Journal Technologies [Member]              
Revenues 13,796,000   12,459,000   27,409,000 24,565,000  
Salaries and employee benefits 10,186,000   9,179,000   19,732,000 18,013,000  
Stock-based compensation 55,000       75,000    
Decrease to the long-term supplemental compensation accrual     (30,000)     (30,000)  
Others 3,477,000   3,251,000   7,068,000 6,187,000  
Total operating expenses 13,718,000   12,400,000   26,875,000 24,170,000  
Income from operations 78,000   59,000   534,000 395,000  
Pretax income 78,000   59,000   534,000 395,000  
Income tax provision (10,000)   160,000   (185,000) (90,000)  
Net income 68,000   219,000   349,000 305,000  
Total assets 23,041,000   23,937,000   23,041,000 23,937,000  
Operating Segments [Member] | Advertising [Member] | Traditional Business [Member]              
Revenues 2,565,000   2,316,000   4,844,000 4,403,000  
Operating Segments [Member] | Subscription and Circulation [Member] | Traditional Business [Member]              
Revenues 1,047,000   1,099,000   2,127,000 2,194,000  
Operating Segments [Member] | Advertising Service Fees and Other [Member] | Traditional Business [Member]              
Revenues 768,000   697,000   1,500,000 1,402,000  
Operating Segments [Member] | License and Maintenance [Member] | Journal Technologies [Member]              
Revenues 7,501,000   6,854,000   15,026,000 13,411,000  
Operating Segments [Member] | Consulting Fees [Member] | Journal Technologies [Member]              
Revenues 2,664,000   3,199,000   5,263,000 6,501,000  
Operating Segments [Member] | Service, Other [Member] | Journal Technologies [Member]              
Revenues 3,631,000   2,406,000   7,120,000 4,653,000  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]              
Dividends and interest income 1,178,000   1,217,000   2,362,000 2,786,000  
Rental income 9,000       9,000    
Increase in fair value of derivative asset 88,000       88,000    
Net unrealized losses on non-qualified compensation plan (3,000)   72,000   (53,000) 72,000  
Net realized and unrealized gains on marketable securities 59,386,000   19,764,000   72,799,000 34,454,000  
Pretax income 60,307,000   19,987,000   74,460,000 35,104,000  
Income tax provision (16,350,000)   (5,220,000)   (20,100,000) (8,040,000)  
Net income 43,957,000   14,767,000   54,360,000 27,064,000  
Total assets 431,490,000   297,003,000   431,490,000 297,003,000  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Real Estate Bank Loan Secured by Logan Office [Member]              
Interest expense on margin loans and others (9,000)   (10,000)   (18,000) (21,000)  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Margin Account [Member]              
Interest expense on margin loans and others $ (342,000)   $ (1,056,000)   $ (727,000) $ (2,187,000)