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Long-term Debt - Schedule of Interest Expense Related to Notes (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2023
Sep. 30, 2022
Debt Instrument [Line Items]          
Amortization of Issuance Costs       $ 6,599 $ 6,490
Convertible Debt          
Debt Instrument [Line Items]          
Contractual Interest Expense $ 1,218 $ 1,218   3,656 3,656
Amortization of Issuance Costs 1,770 1,757   5,300 5,260
Total interest expense 2,988 2,975   8,956 8,916
Convertible Senior Notes due 2025 | Convertible Debt          
Debt Instrument [Line Items]          
Contractual Interest Expense 1,218 1,218   3,656 3,656
Amortization of Issuance Costs 762 753   2,279 2,251
Total interest expense 1,980 1,971   5,935 5,907
Convertible Senior Notes due 2027 | Convertible Debt          
Debt Instrument [Line Items]          
Contractual Interest Expense 0 0   0 0
Amortization of Issuance Costs 1,008 1,004   3,021 3,009
Total interest expense 1,008 1,004   3,021 3,009
Secured Notes Due Twenty Twenty Eight          
Debt Instrument [Line Items]          
Contractual Interest Expense 7,657 7,657   22,969 22,969
Amortization of Issuance Costs 415 388   1,224 1,146
Total interest expense $ 8,072 8,045   24,193 24,115
Secured Term Loan Due Twenty Twenty Five          
Debt Instrument [Line Items]          
Contractual Interest Expense   2,931 $ 0 3,781 5,314
Amortization of Issuance Costs   33   31 69
Total interest expense   $ 2,964   $ 3,812 $ 5,383