Fair Value Measurements - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	$ 1,060,474	$ 1,058,738
2012 Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	216,400
Senior | 2020 Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	444,470	443,860
Senior | 2019 Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	395,237	394,635
Senior | 2012 Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	216,351	215,827
Senior | Fair Value, Level 2 | 2020 Senior Notes | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	477,675	498,290
Senior | Fair Value, Level 2 | 2019 Senior Notes | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	425,984	438,104
Senior | Fair Value, Level 2 | 2012 Senior Notes | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory note outstanding	$ 221,702	$ 232,381