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Financial Instruments and Fair Value Measurements - Schedule of Fair Value Measurement Information about Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Term Loan $ 772,000 $ 772,000
2026 Unsecured Notes 375,000 375,000
Finance lease liabilities 9,182 12,463
Notes payable 4,373 6,369
Carrying Amount    
Debt Instrument [Line Items]    
Term loan 1,160,555 1,165,832
Carrying Amount | Level 2    
Debt Instrument [Line Items]    
Term Loan 772,000 772,000
2026 Unsecured Notes 375,000 375,000
Carrying Amount | Level 3    
Debt Instrument [Line Items]    
Finance lease liabilities 9,182 12,463
Notes payable 4,373 6,369
Fair Value    
Debt Instrument [Line Items]    
Term loan 1,174,683 1,196,888
Fair Value | Level 2    
Debt Instrument [Line Items]    
Term Loan 758,490 776,806
2026 Unsecured Notes 402,638 401,250
Fair Value | Level 3    
Debt Instrument [Line Items]    
Finance lease liabilities 9,182 12,463
Notes payable $ 4,373 $ 6,369