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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
Ordinary shares [Member]
Treasury Stock [Member]
Additional paid in capital [Member]
Retained Earnings [Member]
Accumulated other comprehensive income (loss) income [Member]
Noncontrolling interest [Member]
Total
Balance at Dec. 31, 2017 $ 27,000 $ (1,749,000) $ 247,077,000 $ 133,274,000 $ 13,107,000 $ 2,792,000 $ 394,528,000
Balance, shares at Dec. 31, 2017 270,918,702            
Net income       38,125,000   641,000 38,766,000
Other comprehensive (loss) income         (26,216,000) (140,000) (26,356,000)
Share-based compensation     13,788,000       13,788,000
Options exercised     111,000       111,000
Options exercised, shares 230,225            
Restricted shares vested $ 1,000   (1,000)        
Restricted shares vested, shares 9,271,350            
Follow-on equity offering, net of issuance costs of $6,919,202 $ 5,000   106,616,000       $ 106,621,000
Follow-on equity offering, net of issuance costs of $6,919,202 shares 51,609,475           51,609,475
Acquisition of non-controlling interest     1,091,000   (124,000) (3,293,000) $ (2,326,000)
Balance at Dec. 31, 2018 $ 33,000 (1,749,000) 368,682,000 171,399,000 (13,233,000)   525,132,000
Balance, shares at Dec. 31, 2018 332,029,752            
Net income       29,524,000   (1,000) 29,523,000
Other comprehensive (loss) income         (6,704,000) 2,000 (6,702,000)
Share-based compensation     17,897,000       17,897,000
Options exercised $ 1,000   793,000       794,000
Options exercised, shares 2,474,950            
Restricted shares vested $ 1,000   (1,000)        
Restricted shares vested, shares 12,914,450            
Proceeds from sale of non-controlling interest           514,000 514,000
Balance at Dec. 31, 2019 $ 35,000 (1,749,000) 387,371,000 200,923,000 (19,937,000) 515,000 567,158,000
Balance, shares at Dec. 31, 2019 347,419,152            
Net income       129,195,000   4,612,000 133,807,000
Other comprehensive (loss) income         46,204,000 2,234,000 48,438,000
Share-based compensation     17,908,000       17,908,000
Options exercised $ 1,000   2,676,000       $ 2,677,000
Options exercised, shares 4,916,850           4,916,850
Restricted shares vested $ 1,000   (1,000)        
Restricted shares vested, shares 12,899,400            
Contribution from related parties (see Note 15(3))     839,000       $ 839,000
Proceeds from sale of non-controlling interest     3,657,000     24,431,000 28,088,000
Balance at Dec. 31, 2020 $ 365,235,402 $ (1,749,000) $ 412,450,000 $ 330,118,000 $ 26,267,000 $ 31,792,000 $ 798,915,000
Balance, shares at Dec. 31, 2020 37,000