Quarterly report pursuant to Section 13 or 15(d)

Debt - Components of Interest Expense, Related Fees, Losses on Debt Extinguishment and Cash Paid for Interest Expense for Debt (Details)

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Debt - Components of Interest Expense, Related Fees, Losses on Debt Extinguishment and Cash Paid for Interest Expense for Debt (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Debt Instrument [Line Items]        
Interest expense $ 17,184 [1] $ 12,698 [2] $ 33,809 [1] $ 24,345 [2]
Amortization of debt issuance cost (loan fees) 1,537 1,029 3,046 2,239 [3]
Total interest expense and fees 19,648 14,190 38,602 27,679
Cash paid for interest expense 9,824 3,632 33,664 22,642
Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 927 463 1,747 1,095
SBA Debentures        
Debt Instrument [Line Items]        
Interest expense 1,137 [1] 1,138 [2] 2,262 [1] 1,688 [2]
Amortization of debt issuance cost (loan fees) 146 146 290 286 [3]
Total interest expense and fees 1,283 1,284 2,552 1,974
Cash paid for interest expense 0 0 2,262 749
SBA Debentures | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
2022 Notes        
Debt Instrument [Line Items]        
Interest expense [2],[3]   0   1,011
Amortization of debt issuance cost (loan fees) [3]   0   50
Total interest expense and fees [3]   0   1,061
Cash paid for interest expense [3]   0   2,293
2022 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) [3]   0   0
July 2024 Notes        
Debt Instrument [Line Items]        
Interest expense 1,252 [1] 1,252 [2] 2,504 [1] 2,504 [2]
Amortization of debt issuance cost (loan fees) 74 74 148 148 [3]
Total interest expense and fees 1,326 1,326 2,652 2,652
Cash paid for interest expense 0 0 2,504 2,504
July 2024 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
February 2025 Notes        
Debt Instrument [Line Items]        
Interest expense 535 [1] 535 [2] 1,070 [1] 1,070 [2]
Amortization of debt issuance cost (loan fees) 28 28 57 57 [3]
Total interest expense and fees 563 563 1,127 1,127
Cash paid for interest expense 0 0 1,070 1,070
February 2025 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
June 2025 Notes        
Debt Instrument [Line Items]        
Interest expense 755 [1] 755 [2] 1,509 [1] 1,509 [2]
Amortization of debt issuance cost (loan fees) 41 41 81 81 [3]
Total interest expense and fees 796 796 1,590 1,590
Cash paid for interest expense 1,509 1,509 1,509 1,509
June 2025 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
June 2025 3-Year Notes        
Debt Instrument [Line Items]        
Interest expense 750 [1] 67 [2] 1,500 [1] 67 [2]
Amortization of debt issuance cost (loan fees) 39 4 78 4 [3]
Total interest expense and fees 789 71 1,578 71
Cash paid for interest expense 1,500 0 1,500 0
June 2025 3-Year Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
March 2026 A Notes        
Debt Instrument [Line Items]        
Interest expense 562 [1] 562 [2] 1,125 [1] 1,125 [2]
Amortization of debt issuance cost (loan fees) 23 24 47 48 [3]
Total interest expense and fees 585 586 1,172 1,173
Cash paid for interest expense 0 0 1,125 1,125
March 2026 A Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
March 2026 B Notes        
Debt Instrument [Line Items]        
Interest expense 568 [1] 568 [2] 1,137 [1] 1,137 [2]
Amortization of debt issuance cost (loan fees) 26 26 52 52 [3]
Total interest expense and fees 594 594 1,189 1,189
Cash paid for interest expense 0 0 1,138 1,138
March 2026 B Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
September 2026 Notes        
Debt Instrument [Line Items]        
Interest expense 2,175 [1] 2,175 [2] 4,349 [1] 4,349 [2]
Amortization of debt issuance cost (loan fees) 204 204 408 408 [3]
Total interest expense and fees 2,379 2,379 4,757 4,757
Cash paid for interest expense 0 0 4,266 4,266
September 2026 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
January 2027 Notes        
Debt Instrument [Line Items]        
Interest expense 3,078 [1] 3,078 [2] 6,157 [1] 5,473 [2]
Amortization of debt issuance cost (loan fees) 207 207 414 368 [3]
Total interest expense and fees 3,285 3,285 6,571 5,841
Cash paid for interest expense 0 5,906 0
January 2027 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
2031 Asset-Backed Notes        
Debt Instrument [Line Items]        
Interest expense 1,904 [1] 169 [2] 3,807 [1] 169 [2]
Amortization of debt issuance cost (loan fees) 100 9 200 9 [3]
Total interest expense and fees 2,004 178 4,007 178
Cash paid for interest expense 1,857 0 3,713 0
2031 Asset-Backed Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
2033 Notes        
Debt Instrument [Line Items]        
Interest expense 625 [1] 625 [2] 1,250 [1] 1,250 [2]
Amortization of debt issuance cost (loan fees) 27 27 54 54 [3]
Total interest expense and fees 652 652 1,304 1,304
Cash paid for interest expense 625 625 1,250 1,250
2033 Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 0 0 0 0
2022 Convertible Notes        
Debt Instrument [Line Items]        
Interest expense [3]   0   923 [2]
Amortization of debt issuance cost (loan fees) [3]   0   149
Total interest expense and fees [3]   0 [2]   1,072
Cash paid for interest expense [3]   0   5,004
2022 Convertible Notes | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) [3]   0   0
MUFG Bank Facility        
Debt Instrument [Line Items]        
Interest expense 1,363 [1],[4] 1,369 [2],[5] 3,076 [1],[4] 1,483 [2],[5]
Amortization of debt issuance cost (loan fees) 442 [4] 175 [5] 884 [4] 412 [3],[5]
Total interest expense and fees 2,496 [4] 1,939 [5] 5,268 [4] 2,857 [5]
Cash paid for interest expense 1,595 [4] 1,215 [5] 3,433 [4] 1,215 [5]
MUFG Bank Facility | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) 691 [4] 395 [5] 1,308 [4] 962 [5]
SMBC Facility        
Debt Instrument [Line Items]        
Interest expense 2,480 [1] 405 [2] 4,063 [1] 587 [2]
Amortization of debt issuance cost (loan fees) 180 64 333 113 [3]
Total interest expense and fees 2,896 537 4,835 833
Cash paid for interest expense 2,738 283 3,988 519
SMBC Facility | Unused Facility Other Fees [Member]        
Debt Instrument [Line Items]        
Unused facility and other fees (loan fees) $ 236 $ 68 $ 439 $ 133
[1] Interest expense includes amortization of original issue discounts for the three months ended June 30, 2023 of $42 thousand, $126 thousand, and $47 thousand related to the September 2026 Notes, January 2027 Notes, and 2031 Asset-Backed Notes, respectively. For the six months ended June 30, 2023, $83 thousand, $251 thousand, and $94 thousand, related to the September 2026 Notes, January 2027 Notes, and 2031 Asset-Backed Notes, respectively.
[2] Interest expense includes amortization of original issue discounts for the three months ended June 30, 2022 of $42 thousand, $126 thousand, and $4 thousand related to the September 2026 Notes, January 2027 Notes, and 2031 Asset-Backed Notes, respectively. For the six months ended June 30, 2022, $23 thousand, $112 thousand, $84 thousand, $223 thousand, and $4 thousand, related to the 2022 Notes, 2022 Convertible Notes, September 2026 Notes, January 2027 Notes, and 2031 Asset-Backed Notes, respectively.
[3] In February 2022, the Company has fully repaid the aggregate outstanding principal balances and retired 2022 Notes and 2022 Convertible Notes.
[4] The June 2022 amendment of the MUFG Bank Facility replaced the Union Bank Facility via an amendment which changed the lead lender.
[5] The June 2022 amendment of the MUFG Bank Facility replaced the Union Bank Facility via an amendment which changed the lead lender.