Debt - Schedule of Debt Issuance Costs, Net of accumulated Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	$ 32,909	$ 26,626
Balance Sheet Location [Axis]: us-gaap:LongTermDebt
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	37,162	32,223
SBA Debentures
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	8,111	8,988
March 2026 A Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	0	16
March 2026 B Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	0	17
September 2026 Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	0	698
January 2027 Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	407	1,404
2028 Convertible Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	5,095	7,088
February 2029 Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	4,743	0
June 2030 Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	6,081	7,306
2031 Asset-Backed Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	0	106
July 2031 Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	7,581	0
2033 Notes
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	768	849
MUFG Bank Facility
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	2,772	3,537
SMBC Facility
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	1,604	2,214
SMBC Facility \| Line of credit \| Credit Facility
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	1,500	2,000
SMBC Facility \| Term Loan
Debt Instrument [Line Items]
Debt issuance cost, net of accumulated amortization	$ 100	$ 200