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Derivative Instruments (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Sep. 25, 2017
Derivative [Line Items]        
Pre-tax (charge) on derivative instruments $ 9,472 $ 107,044    
Net gain on financial instruments $ (2,500) $ 10,900    
June 30, 2017 [Member] [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 2.706%      
Market Value (Liability) $ (2,659)   $ (3,551)  
Derivative Liability, Notional Amount $ 136,875   138,750  
May 5, 2021 [Member] [Member] [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 1.09%      
Market Value (Liability) $ 10   41  
Derivative Liability, Notional Amount $ 11,250   13,125  
May 30, 2021 [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 1.703%      
Market Value (Liability) $ 29   80  
Derivative Liability, Notional Amount $ 11,250   13,125  
March 31, 2022 One [Member] [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 1.90%      
Market Value (Liability) $ 892   1,116  
Derivative Liability, Notional Amount $ 50,000   50,000  
March 31, 2022 Two [Member] [Member] [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 1.95%      
Market Value (Liability) $ 1,375   1,722  
Derivative Liability, Notional Amount $ 75,000   75,000  
March 31, 2023 [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 2.425%      
Market Value (Liability) $ 5,915   6,904  
Derivative Liability, Notional Amount $ 138,750   $ 140,625  
Convertible Debt [Member]        
Derivative [Line Items]        
Convertible note hedge shares       8,100