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Long Term Debt Additional Information (Details)
3 Months Ended 9 Months Ended
Jan. 29, 2019
USD ($)
$ / shares
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jul. 16, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]              
Amortization of debt discount       $ 7,611,000 $ 7,239,000    
Term Loan Facility [Member]              
Debt Instrument [Line Items]              
Long-term Debt, Gross   $ 230,500,000   230,500,000      
Long-term Debt   229,102,000   229,102,000     $ 240,145,000
Term Loan Facility [Member] | Amended and Restated Senior Credit Agreement [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Face Amount           $ 233,500,000  
Line of Credit [Member]              
Debt Instrument [Line Items]              
Long-term Debt   171,000,000   171,000,000     $ 207,000,000
Line of Credit Facility, Remaining Borrowing Capacity   411,500,000   411,500,000      
Letters of Credit Outstanding, Amount   2,500,000   2,500,000      
Line of Credit [Member] | Amended and Restated Senior Credit Agreement [Member]              
Debt Instrument [Line Items]              
Line of Credit Facility, Maximum Borrowing Capacity           $ 585,000,000  
Convertible Notes Payable [Member] | 2.625 Percent Convertible Notes Due 2024 [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Face Amount $ 345,000,000            
Debt Instrument, Convertible, Carrying Amount of Equity Component $ 39,100,000            
Amortization of debt discount   2,600,000 $ 2,400,000 7,600,000 7,200,000    
Interest rate, stated percentage 2.625%            
Debt Instrument, Interest Rate, Effective Percentage 6.14%            
Interest Expense, Debt   $ 2,300,000 $ 2,300,000 $ 6,800,000 $ 6,800,000    
Debt Instrument, Convertible, Gross Amount of Equity Component $ 51,600,000            
Conversion price (in dollars per share) | $ / shares $ 88.80            
Debt Instrument, Convertible, Conversion Ratio 11.2608            
Convertible Notes Payable [Member] | 2.625 Percent Convertible Notes Due 2024 [Member] | Warrant              
Debt Instrument [Line Items]              
Option indexed to issuer's equity, strike price (in dollars per share) | $ / shares $ 114.92            
Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Interest Rate, Effective Percentage   1.625%   1.625%      
LIBOR Interest Rate Floor       0.125%      
Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Basis Spread on Variable Rate       1.50%      
Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] | Adjusted LIBOR              
Debt Instrument [Line Items]              
Debt Instrument, Basis Spread on Variable Rate       1.00%      
Long-term Debt [Member] | Amended and Restated Senior Credit Agreement [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]              
Debt Instrument [Line Items]              
Line of Credit Facility, Commitment Fee Percentage       0.50%      
Call Option [Member] | Convertible Notes Payable [Member] | 2.625 Percent Convertible Notes Due 2024 [Member]              
Debt Instrument [Line Items]              
Hedge and warrant transactions, net cash paid $ 21,000,000