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Consolidated Statements of Shareholders' Equity - USD ($)
Common Stock [Member]
Common Class A [Member]
Common Stock [Member]
Common Class B [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Common Class A [Member]
Common Class B [Member]
Total
Balance at Dec. 31, 2022 $ 5,000 $ 1,000 $ 11,407,000 $ (58,000) $ 4,781,000     $ 16,136,000
Balance (in Shares) at Dec. 31, 2022 5,233,568 762,612            
Consolidated net income         1,845,000     1,845,000
Other comprehensive income (loss)       (3,000)       (3,000)
Exercise stock options     54,000         $ 54,000
Exercise stock options (in Shares) 25,000             25,000
Amortization of stock based compensation     13,000         $ 13,000
Cash dividends         (1,202,000) $ (1,049,000) $ (152,000) (1,202,000)
Balance at Dec. 31, 2023 $ 5,000 $ 1,000 11,474,000 (61,000) 5,424,000     16,843,000
Balance (in Shares) at Dec. 31, 2023 5,258,568 762,612       5,258,568 762,612  
Consolidated net income         902,000     902,000
Other comprehensive income (loss)       12,000       12,000
Amortization of stock based compensation     10,000         10,000
Cash dividends         (1,204,000) $ (1,052,000) $ (152,000) (1,204,000)
Balance at Dec. 31, 2024 $ 5,000 $ 1,000 $ 11,484,000 $ (49,000) $ 5,122,000     $ 16,563,000
Balance (in Shares) at Dec. 31, 2024 5,258,568 762,612       5,258,568 762,612