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Consolidated Statements of Changes in Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Treasury Stock [Member]
Noncontrolling Interest [Member]
Total
Beginning balance, value at Sep. 30, 2018 $ 97 $ 64,212 $ 88,906 $ 220 $ (103) $ 153,332
Beginning balance, shares at Sep. 30, 2018 9,719          
Reclassification upon adoption of ASU 2016-01 220 (220)
Purchase of treasury shares $ (2,901) (2,901)
Purchase of treasury shares, shares         (128)    
Canceled treasury shares $ (1) (2,900) $ 2,901
Canceled treasury shares, shares (128)       128    
Payment of dividends (1,252) (1,252)
Payments to noncontrolling interests (70) (70)
Divestiture in other entities (134) (134)
Net income (loss) 20,294 151 20,445
Ending balance, value at Sep. 30, 2019 $ 96 61,312 108,168 (156) 169,420
Ending balance, shares at Sep. 30, 2019 9,591          
Purchase of treasury shares $ (9,484) (9,484)
Purchase of treasury shares, shares         (516)    
Canceled treasury shares $ (5) (9,479) $ 9,484
Canceled treasury shares, shares (516)       516    
Payment of dividends (1,286) (1,286)
Payments to noncontrolling interests (31) (31)
Net income (loss) (6,085) (227) (6,312)
Ending balance, value at Sep. 30, 2020 $ 91 51,833 100,797 (414) 152,307
Ending balance, shares at Sep. 30, 2020 9,075          
Purchase of treasury shares $ (1,794) (1,794)
Purchase of treasury shares, shares         (75)    
Canceled treasury shares $ (1) (1,793) $ 1,794
Canceled treasury shares, shares (75)       75    
Payment of dividends (1,440) (1,440)
Net income (loss) 30,336 (186) 30,150
Ending balance, value at Sep. 30, 2021 $ 90 $ 50,040 $ 129,693 $ (600) $ 179,223
Ending balance, shares at Sep. 30, 2021 9,000