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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 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, 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 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 5,233,568 762,612 762,612