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Long-term Debt, Net - Additional Information (Details)
Nov. 05, 2020
USD ($)
day
$ / shares
Aug. 18, 2020
USD ($)
Dec. 31, 2020
USD ($)
Feb. 07, 2018
USD ($)
Convertible Debt | the “Notes”        
Line of Credit Facility [Line Items]        
Aggregate principal amount $ 575,000,000      
Stated interest rate 0.00%      
Net proceeds from the offering $ 558,400,000      
Initial conversion rate 0.0059439      
Initial conversion price (in usd per share) | $ / shares $ 168.24      
Percentage of ordinary shares sale price to the conversion price 130.00%      
Number of trading days | day 20      
Number of consecutive trading days | day 30      
Redemption price, percentage of principal amount to be redeemed 100.00%      
Sinking fund provided $ 0      
Covenant compliance, minimum aggregate principal amount by holders $ 3,000,000      
Threshold percentage of stock price trigger 98.00%      
Number of consecutive trading days, measurement period | day 5      
Number of business days | day 5      
Threshold days of last trading price average | day 10      
Percentage of last reported trading price 10.00%      
Notice period for holders of the Notes 35 days      
Debt instrument, un-amortized issuance costs     $ 12,298,000  
Medium-term Notes | 2018 Credit Facility        
Line of Credit Facility [Line Items]        
Aggregate principal amount       $ 150,000,000
Stated interest rate       9.00%
Debt principal repayment   $ 150,000,000    
Debt prepayment premium   3,000,000    
Debt instrument, un-amortized issuance costs   $ 478,000