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Consolidated Statements of Shareholders' Equity - USD ($)
Common Class A [Member]
Common Stock [Member]
Common Class A [Member]
Common Class B [Member]
Common Stock [Member]
Common Class B [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2021 $ 5,000   $ 1,000   $ 11,176,000 $ (73,000) $ 3,276,000 $ 14,385,000
Balance (in Shares) at Dec. 31, 2021 5,113,568   762,612          
Consolidated net income             2,042,000 2,042,000
Other comprehensive income (loss)           (17,000)   (17,000)
Amortization of stock based compensation         5,000     5,000
Cash dividends             (264,000) (264,000)
Balance at Mar. 31, 2022 $ 5,000   $ 1,000   11,181,000 (90,000) 5,054,000 16,151,000
Balance (in Shares) at Mar. 31, 2022 5,113,568   762,612          
Balance at Dec. 31, 2021 $ 5,000   $ 1,000   11,176,000 (73,000) 3,276,000 14,385,000
Balance (in Shares) at Dec. 31, 2021 5,113,568   762,612          
Other comprehensive income (loss)               15,000
Balance at Sep. 30, 2022 $ 5,000   $ 1,000   11,402,000 (58,000) 5,011,000 16,361,000
Balance (in Shares) at Sep. 30, 2022 5,233,568   762,612          
Balance at Mar. 31, 2022 $ 5,000   $ 1,000   11,181,000 (90,000) 5,054,000 16,151,000
Balance (in Shares) at Mar. 31, 2022 5,113,568   762,612          
Consolidated net income             613,000 613,000
Other comprehensive income (loss)           12,000   12,000
Stock options exercised         208,000     208,000
Stock options exercised (in Shares) 120,000              
Amortization of stock based compensation         6,000     6,000
Cash dividends             (870,000) (870,000)
Balance at Jun. 30, 2022 $ 5,000   $ 1,000   11,395,000 (78,000) 4,797,000 16,120,000
Balance (in Shares) at Jun. 30, 2022 5,233,568   762,612          
Consolidated net income             484,000 484,000
Other comprehensive income (loss)           20,000   20,000
Amortization of stock based compensation         7,000     7,000
Cash dividends             (270,000) (270,000)
Balance at Sep. 30, 2022 $ 5,000   $ 1,000   11,402,000 (58,000) 5,011,000 16,361,000
Balance (in Shares) at Sep. 30, 2022 5,233,568   762,612          
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 5,233,568 762,612 762,612        
Consolidated net income             762,000 762,000
Other comprehensive income (loss)           (1,000)   (1,000)
Amortization of stock based compensation         2,000     2,000
Cash dividends             (300,000) (300,000)
Balance at Mar. 31, 2023 $ 5,000   $ 1,000   11,409,000 (59,000) 5,243,000 16,599,000
Balance (in Shares) at Mar. 31, 2023 5,233,568   762,612          
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 5,233,568 762,612 762,612        
Other comprehensive income (loss)               $ 3,000
Stock options exercised (in Shares)               23,333
Balance at Sep. 30, 2023 $ 5,000   $ 1,000   11,467,000 (55,000) 5,584,000 $ 17,002,000
Balance (in Shares) at Sep. 30, 2023 5,256,901 5,256,901 762,612 762,612        
Balance at Mar. 31, 2023 $ 5,000   $ 1,000   11,409,000 (59,000) 5,243,000 16,599,000
Balance (in Shares) at Mar. 31, 2023 5,233,568   762,612          
Consolidated net income             531,000 531,000
Other comprehensive income (loss)           (1,000)   (1,000)
Amortization of stock based compensation         4,000     4,000
Cash dividends             (300,000) (300,000)
Balance at Jun. 30, 2023 $ 5,000   $ 1,000   11,413,000 (60,000) 5,474,000 16,833,000
Balance (in Shares) at Jun. 30, 2023 5,233,568   762,612          
Consolidated net income             411,000 411,000
Other comprehensive income (loss)           5,000   5,000
Stock options exercised         56,000     56,000
Stock options exercised (in Shares) 23,333              
Amortization of stock based compensation         (2,000)     (2,000)
Cash dividends             (301,000) (301,000)
Balance at Sep. 30, 2023 $ 5,000   $ 1,000   $ 11,467,000 $ (55,000) $ 5,584,000 $ 17,002,000
Balance (in Shares) at Sep. 30, 2023 5,256,901 5,256,901 762,612 762,612