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Condensed Consolidated Statements Of Changes In Equity - USD ($)
$ in Thousands
Total
Common And Treasury Stock [Member]
Treasury Stock [Member]
Number Of Shares, Net Of Treasury [Member]
Additional Paid In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Parent [Member]
Noncontrolling Interest [Member]
Balance, Number of Shares at Jun. 30, 2019   81,459,717 (24,891,292) 56,568,425          
Balance at Jun. 30, 2019 $ 317,342 $ 80 $ (286,951)   $ 276,997 $ 523,028 $ (195,812) $ 317,342 $ 0
Redeemable Common Stock, Balance at Jun. 30, 2019 107,672                
Stock-based compensation charge (Note 13) 823       823     823  
Stock based-compensation charge related to equity-accounted investment (Note 6) 71       71     71  
Net loss (4,597)         (4,597)   (4,597) 0
Other comprehensive income (Note 12) $ 4,834           4,834 4,834 0
Balance, Number of Shares at Dec. 31, 2019 56,568,425 81,459,717 (24,891,292) 56,568,425          
Balance at Dec. 31, 2019 $ 318,473 $ 80 $ (286,951)   277,891 518,431 (190,978) 318,473 0
Redeemable Common Stock, Balance at Dec. 31, 2019 107,672                
Balance, Number of Shares at Sep. 30, 2019   81,459,717 (24,891,292) 56,568,425          
Balance at Sep. 30, 2019 298,041 $ 80 $ (286,951)   277,455 518,636 (211,179) 298,041 0
Redeemable Common Stock, Balance at Sep. 30, 2019 107,672                
Stock-based compensation charge (Note 13) 436       436     436  
Net loss (205)         (205)   (205) 0
Other comprehensive income (Note 12) $ 20,201           20,201 20,201 0
Balance, Number of Shares at Dec. 31, 2019 56,568,425 81,459,717 (24,891,292) 56,568,425          
Balance at Dec. 31, 2019 $ 318,473 $ 80 $ (286,951)   277,891 518,431 (190,978) 318,473 0
Redeemable Common Stock, Balance at Dec. 31, 2019 107,672                
Balance, Number of Shares at Jun. 30, 2020   82,010,217 (24,891,292) 57,118,925          
Balance at Jun. 30, 2020 290,213 [1] $ 80 $ (286,951)   301,489 444,670 (169,075) 290,213 0
Redeemable Common Stock, Balance at Jun. 30, 2020 [1] 84,979                
Balance, Number of Shares at Sep. 30, 2020   81,530,017 (24,891,292) 56,638,725          
Balance at Sep. 30, 2020 269,542 $ 80 $ (286,951)   301,946 415,712 (161,245) 269,542 0
Redeemable Common Stock, Balance at Sep. 30, 2020 84,979                
Balance, Number of Shares at Jun. 30, 2020   82,010,217 (24,891,292) 57,118,925          
Balance at Jun. 30, 2020 290,213 [1] $ 80 $ (286,951)   301,489 444,670 (169,075) 290,213 0
Exercise of stock option (Note 13) $ 18 $ 0     18     18  
Exercise of stock option (Note 13), shares 5,834 5,834   5,834          
Redeemable Common Stock, Balance at Jun. 30, 2020 [1] $ 84,979                
Stock-based compensation charge (Note 13) 928       928     928  
Reversal of stock-based compensation charge (Note 13) (297)       (297)     (297)  
Reversal of stock-based compensation charge (Note 13), shares   (510,200)   (510,200)          
Stock based-compensation charge related to equity-accounted investment (Note 6) (40)       (40)     (40)  
Proceeds from disgorgement of shareholders' short-swing profits (Note 22) 98       98     98  
Net loss (33,492)         (33,492)   (33,492) 0
Other comprehensive income (Note 12) $ 27,833           27,833 27,833 0
Balance, Number of Shares at Dec. 31, 2020 56,614,559 81,505,851 (24,891,292) 56,614,559          
Balance at Dec. 31, 2020 $ 285,261 $ 80 $ (286,951)   302,196 411,178 (141,242) 285,261 0
Redeemable Common Stock, Balance at Dec. 31, 2020 84,979                
Balance, Number of Shares at Sep. 30, 2020   81,530,017 (24,891,292) 56,638,725          
Balance at Sep. 30, 2020 269,542 $ 80 $ (286,951)   301,946 415,712 (161,245) 269,542 0
Exercise of stock option (Note 13) 18 $ 0     18     18  
Exercise of stock option (Note 13), shares   5,834   5,834          
Redeemable Common Stock, Balance at Sep. 30, 2020 84,979                
Stock-based compensation charge (Note 13) 246       246     246  
Reversal of stock-based compensation charge (Note 13) (14)       (14)     (14)  
Reversal of stock-based compensation charge (Note 13), shares   (30,000)   (30,000)          
Net loss (4,534)         (4,534)   (4,534) 0
Other comprehensive income (Note 12) $ 20,003           20,003 20,003 0
Balance, Number of Shares at Dec. 31, 2020 56,614,559 81,505,851 (24,891,292) 56,614,559          
Balance at Dec. 31, 2020 $ 285,261 $ 80 $ (286,951)   $ 302,196 $ 411,178 $ (141,242) $ 285,261 $ 0
Redeemable Common Stock, Balance at Dec. 31, 2020 $ 84,979                
[1]
Derived from audited financial statements.