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Consolidated 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, 2013 10,000,000   (123,572)      
Balance at Apr. 30, 2013 $ 1,000 $ 991 $ (1,572) $ 32,315 $ 251 $ 32,985
Net income       6,768   6,768
Change in unrealized gains on securities, net of taxes         (5) $ (5)
Purchases effected in open market (2) (in shares)   (58,499)     58,499 [1]
Purchase of treasury stock     $ (550)     $ (550) [1]
Purchase of treasury stock     $ (550)     (550) [1]
Dividends declared       (5,900)   (5,900)
Balance (in shares) at Apr. 30, 2014 10,000,000   (182,071)      
Balance at Apr. 30, 2014 $ 1,000 991 $ (2,122) 33,183 246 33,298
Net income       7,292   7,292
Change in unrealized gains on securities, net of taxes         (141) $ (141)
Purchases effected in open market (2) (in shares)     (8,433)     8,433 [1]
Purchase of treasury stock     $ (122)     $ (122) [1]
Purchase of treasury stock     $ (122)     (122) [1]
Dividends declared       (5,888)   (5,888)
Balance (in shares) at Apr. 30, 2015 10,000,000   (190,504)      
Balance at Apr. 30, 2015 $ 1,000 991 $ (2,244) 34,587 105 34,439
Net income       7,291   7,291
Change in unrealized gains on securities, net of taxes         20 $ 20
Purchases effected in open market (2) (in shares)     (52,907)     52,907 [1]
Purchase of treasury stock     $ (796)     $ (796) [1]
Purchase of treasury stock     (796)     (796) [1]
Dividends declared     (6,354) (6,354)
Balance (in shares) at Apr. 30, 2016 10,000,000   (243,411)      
Balance at Apr. 30, 2016 $ 1,000 $ 991 $ (3,040) $ 35,524 $ 125 $ 34,600
[1] Were acquired during the $3 million repurchase program authorized in September 2012.