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Condensed 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, 2020 $ 5,000   $ 1,000   $ 11,071,000 $ (66,000) $ 2,231,000 $ 13,242,000
Balance (in Shares) at Dec. 31, 2020 5,062,235   762,612          
Three months ending March 31, 2021                
Consolidated net income             337,000 337,000
Other comprehensive loss           (13,000)   (13,000)
Amortization of stock based compensation         8,000     8,000
Cash dividends             (233,000) (233,000)
Balance at Mar. 31, 2021 $ 5,000   $ 1,000   11,079,000 (79,000) 2,335,000 13,341,000
Balance (in Shares) at Mar. 31, 2021 5,062,235   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 5,113,568 762,612 762,612        
Three months ending March 31, 2021                
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 5,113,568 762,612 762,612