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Consolidated Condensed Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Apr. 30, 2019 10,000,000   (336,439)      
Balance at Apr. 30, 2019 $ 1,000 $ 991 $ (4,743) $ 48,598 $ 1,678 $ 47,524
Net income       3,690   3,690
Change in unrealized gains on securities, net of taxes         86 86
Dividends declared     (1,932)   (1,932)
Purchase of treasury stock (in shares)   (3,857)      
Purchase of treasury stock     $ (92)     (92)
Balance (in shares) at Jul. 31, 2019 10,000,000   (340,296)      
Balance at Jul. 31, 2019 $ 1,000 991 $ (4,835) 50,356 1,764 49,276
Balance (in shares) at Apr. 30, 2020 10,000,000   (383,279)      
Balance at Apr. 30, 2020 $ 1,000 991 $ (5,957) 56,450 1,055 53,539
Net income       5,117   5,117
Change in unrealized gains on securities, net of taxes         120 120
Dividends declared     (2,020)   $ (2,020)
Purchase of treasury stock (in shares)           0
Balance (in shares) at Jul. 31, 2020 10,000,000   (383,279)      
Balance at Jul. 31, 2020 $ 1,000 $ 991 $ (5,957) $ 59,547 $ 1,175 $ 56,756