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Consolidated Statements of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Capital Contributed in Excess of Par Value [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Treasury Stock [Member]
Total
Balance at Apr. 30, 2019 $ 835 $ 51,205 $ 49,052 $ (7,031) $ (4,215) $ 89,846
Balance (in shares) at Apr. 30, 2019 8,353          
Issuance of restricted common stock $ 1 56       57
Issuance of restricted common stock (in shares) 9          
Issuance of deferred common share units   100       100
Issuance of deferred common share units (in shares) 0          
Net income (loss)     (2,027)     (2,027)
Other comprehensive income       2,378   2,378
Balance at Jan. 31, 2020 $ 836 51,361 47,025 (4,653) (4,215) 90,354
Balance (in shares) at Jan. 31, 2020 8,362          
Balance at Oct. 31, 2019 $ 836 51,261 46,687 (4,730) (4,215) 89,839
Balance (in shares) at Oct. 31, 2019 8,362          
Issuance of deferred common share units $ 0 100 0 0 0 100
Issuance of deferred common share units (in shares) 0          
Net income (loss) $ 0 0 338 0 0 338
Other comprehensive income 0 0 0 77 0 77
Balance at Jan. 31, 2020 $ 836 51,361 47,025 (4,653) (4,215) 90,354
Balance (in shares) at Jan. 31, 2020 8,362          
Balance at Apr. 30, 2020 $ 836 51,334 43,149 (6,467) (4,215) 84,637
Balance (in shares) at Apr. 30, 2020 8,358          
Issuance of restricted common stock $ 1 41       42
Issuance of restricted common stock (in shares) 9          
Issuance of deferred common share units   90       90
Issuance of deferred common share units (in shares) 0          
Issuance of common stock settled from deferred common share units (in shares) 12          
Repurchase of common stock $ (83) (5,033)       (5,116)
Repurchase of common stock (in shares) (831)          
Retirement of treasury stock $ (24) (1,360) (2,831)   4,215  
Retirement of treasury stock (in shares) (225)          
Net income (loss)     3,484     3,484
Other comprehensive income       270   270
Balance at Jan. 31, 2021 $ 730 45,072 43,802 (6,197) 0 83,407
Balance (in shares) at Jan. 31, 2021 7,323          
Balance at Oct. 31, 2020 $ 768 47,216 44,540 (6,287) (4,215) 82,022
Balance (in shares) at Oct. 31, 2020 7,692          
Issuance of deferred common share units $ 0 90 0 0 0 90
Issuance of deferred common share units (in shares) 0          
Repurchase of common stock $ (14) (874) 0 0 0 (888)
Repurchase of common stock (in shares) (144)          
Retirement of treasury stock $ (24) (1,360) (2,831) 0 4,215  
Retirement of treasury stock (in shares) (225)          
Net income (loss) $ 0 0 2,093 0 0 2,093
Other comprehensive income 0 0 0 90 0 90
Balance at Jan. 31, 2021 $ 730 $ 45,072 $ 43,802 $ (6,197) $ 0 $ 83,407
Balance (in shares) at Jan. 31, 2021 7,323