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Debt - Additional Information (Details)
1 Months Ended 3 Months Ended 6 Months Ended
Aug. 20, 2018
USD ($)
business_day
trading_day
$ / shares
Nov. 30, 2018
USD ($)
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2021
USD ($)
$ / shares
Jun. 30, 2024
USD ($)
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2021
USD ($)
$ / shares
Jan. 01, 2022
Dec. 31, 2021
USD ($)
Jun. 26, 2015
USD ($)
Debt Instrument [Line Items]                    
Conversion price (in dollars per share) | $ / shares     $ 101.38 $ 101.38   $ 101.38 $ 101.38      
Amortization of debt discount           $ 1,068,000 $ 5,685,000      
Unamortized debt issuance costs     $ 1,885,000     1,885,000     $ 2,363,000  
Forecast                    
Debt Instrument [Line Items]                    
Repayments of long-term debt         $ 316,200,000          
Federal Funds                    
Debt Instrument [Line Items]                    
Credit facility basis point (as a percent)   0.50%                
London Interbank Offered Rate (LIBOR)                    
Debt Instrument [Line Items]                    
Credit facility basis point (as a percent)   1.00%                
Line of Credit                    
Debt Instrument [Line Items]                    
Borrowing limit used     400,000     400,000        
2023 Convertible Notes                    
Debt Instrument [Line Items]                    
Exceeded principal amount     247,900,000     247,900,000        
Fundamental change repurchase price percent (as a percent) 100.00%                  
2023 Convertible Notes | Convertible Debt                    
Debt Instrument [Line Items]                    
Principal amount $ 316,300,000                  
Interest rate (as a percent) 2.00%                  
Conversion price (in dollars per share) | $ / shares $ 101.38                  
Interest expense     1,600,000 $ 1,600,000   3,200,000 3,200,000      
Amortization of debt discount       $ 2,400,000     $ 4,700,000      
2023 Convertible Notes | Convertible Debt | Debt Instrument, Redemption, Period One                    
Debt Instrument [Line Items]                    
Threshold trading days | trading_day 20                  
Consecutive trading days | trading_day 30                  
Redemption price percentage 130.00%                  
2023 Convertible Notes | Convertible Debt | Debt Instrument, Redemption, Period Two                    
Debt Instrument [Line Items]                    
Consecutive trading days | trading_day 5                  
Redemption price percentage 98.00%                  
Debt instrument business days | business_day 5                  
2023 Convertible Notes | Senior Notes                    
Debt Instrument [Line Items]                    
Interest rate (as a percent)               2.00%    
Debt conversion ratio (in shares) 0.0098643                  
Convertible Note Due 202, Par Value                    
Debt Instrument [Line Items]                    
Principal amount $ 1,000                  
Credit Facility | Line of Credit                    
Debt Instrument [Line Items]                    
Maximum borrowing capacity                   $ 550,000,000
Debt issuance costs   $ 1,700,000                
Borrowings outstanding     0     0     0  
Unamortized debt issuance costs     $ 600,000     $ 600,000     $ 900,000  
Credit Facility | Line of Credit | Minimum                    
Debt Instrument [Line Items]                    
Commitment fee (as a percent)           0.20%        
Fronting fees (as a percent)           1.25%        
Credit Facility | Line of Credit | Maximum                    
Debt Instrument [Line Items]                    
Commitment fee (as a percent)           0.35%        
Fronting fees (as a percent)           2.00%        
Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Minimum                    
Debt Instrument [Line Items]                    
Basis spread (as a percent)   1.25%                
Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR) | Maximum                    
Debt Instrument [Line Items]                    
Basis spread (as a percent)   2.00%                
Credit Facility | Line of Credit | Base Rate | Minimum                    
Debt Instrument [Line Items]                    
Basis spread (as a percent)   0.25%                
Credit Facility | Line of Credit | Base Rate | Maximum                    
Debt Instrument [Line Items]                    
Basis spread (as a percent)   1.00%