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Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Treasury Stock [Member]
Noncontrolling Interests [Member]
Total
Beginning Balance at Sep. 30, 2018 $ 97 $ 64,212 $ 88,906 $ 220 $ (103) $ 153,332
Beginning Balance, shares at Sep. 30, 2018 9,719,000          
Reclassification upon adoption of ASU 2016-01 220 (220)
Purchase of treasury shares $ (355) (355)
Purchase of treasury shares, shares       (14,000)    
Canceled treasury shares (355) $ 355
Canceled treasury shares, shares (14,000)       14,000    
Payment of dividends (291) (291)
Net income loss 6,344 60 6,404
Ending Balance at Dec. 31, 2018 $ 97 63,857 95,179 (43) 159,090
Ending Balance, shares at Dec. 31, 2018 9,705,000          
Beginning Balance at Sep. 30, 2018 $ 97 64,212 88,906 220 (103) 153,332
Beginning Balance, shares at Sep. 30, 2018 9,719,000          
Canceled treasury shares            
Payment of dividends             (582)
Net income loss             13,147
Ending Balance at Mar. 31, 2019 $ 96 62,252 101,623 (35) 163,936
Ending Balance, shares at Mar. 31, 2019 9,634,000          
Beginning Balance at Dec. 31, 2018 $ 97 63,857 95,179 (43) 159,090
Beginning Balance, shares at Dec. 31, 2018 9,705,000          
Purchase of treasury shares $ (1,606) (1,606)
Purchase of treasury shares, shares       (71,000)    
Canceled treasury shares $ (1) (1,605) $ 1,606
Canceled treasury shares, shares (71,000)       71,000    
Payment of dividends (291) (291)
Net income loss 6,735 8 6,743
Ending Balance at Mar. 31, 2019 $ 96 62,252 101,623 (35) 163,936
Ending Balance, shares at Mar. 31, 2019 9,634,000          
Beginning Balance at Sep. 30, 2019 $ 96 61,312 107,049 (156) 168,301
Beginning Balance, shares at Sep. 30, 2019 9,591,000          
Purchase of treasury shares $ (6,441) (6,441)
Purchase of treasury shares, shares       (333,000)    
Canceled treasury shares $ (3) (6,438) $ 6,441
Canceled treasury shares, shares (333,000)       333,000    
Payment of dividends (279) (279)
Payments to noncontrolling interests (10) (10)
Net income loss 5,634 5,634
Ending Balance at Dec. 31, 2019 $ 93 54,874 112,404 (166) 167,205
Ending Balance, shares at Dec. 31, 2019 9,258,000            
Beginning Balance at Sep. 30, 2019 $ 96 61,312 107,049 (156) 168,301
Beginning Balance, shares at Sep. 30, 2019 9,591,000          
Canceled treasury shares            
Payment of dividends             (279)
Net income loss             2,141
Ending Balance at Mar. 31, 2020 $ 91 52,829 108,584 (228) 161,276
Ending Balance, shares at Mar. 31, 2020 9,125,000            
Beginning Balance at Dec. 31, 2019 $ 93 54,874 112,404 (166) 167,205
Beginning Balance, shares at Dec. 31, 2019 9,258,000            
Purchase of treasury shares $ (2,047) (2,047)
Purchase of treasury shares, shares       (133,000)    
Canceled treasury shares $ (2) (2,045) $ 2,047
Canceled treasury shares, shares (133,000)       133,000    
Payment of dividends (368) (368)
Payments to noncontrolling interests (21) (21)
Net income loss (3,452) (41) (3,493)
Ending Balance at Mar. 31, 2020 $ 91 $ 52,829 $ 108,584 $ (228) $ 161,276
Ending Balance, shares at Mar. 31, 2020 9,125,000