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Share-based Compensation (Details)
12 Months Ended
Dec. 31, 2019
shares
Restricted shares granted on April 19, 2016 [Member]  
Non-vested share units, beginning balance 84,830
Granted
Vested (84,830)
Non-vested share units, ending balance
Restricted shares granted on August 23, 2019 [Member]  
Non-vested share units, beginning balance 1,887,000
Granted (307,000)
Vested (74,167)
Forfeited 1,505,833