XML 79 R58.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Debt - Schedule of Components of Interest Expense, Related Fees, Losses on Debt Extinguishment and Cash Paid for Interest Expense for Debt (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |
Interest expense | $ 67,620 | $ 54,749 | $ 54,447
Amortization of debt issuance cost (loan fees) | 6,123 | 4,800 | 10,451
Unused facility and other fees (loan fees) | 3,722 | 2,798 | 2,625
Total interest expense and fees | 77,465 | 62,347 | 67,523
Cash paid for interest expense | 67,149 | 52,075 | 51,469
SBA Debentures |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 4,562 | 3,997 | 1,580
Amortization of debt issuance cost (loan fees) | 585 | 581 | 452
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 5,147 | 4,578 | 2,032
Cash paid for interest expense | 4,562 | 2,835 | 2,272
2022 Notes(3) |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense |  | 1,011 | 7,102
Amortization of debt issuance cost (loan fees) |  | 50 | 360
Unused facility and other fees (loan fees) |  | 0 | 0
Total interest expense and fees |  | 1,061 | 7,462
Cash paid for interest expense |  | 2,293 | 6,938
Amortization of original issue discounts |  | 23 | 165
July 2024 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 5,009 | 5,009 | 5,009
Amortization of debt issuance cost (loan fees) | 295 | 295 | 295
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 5,304 | 5,304 | 5,304
Cash paid for interest expense | 5,009 | 5,009 | 5,008
February 2025 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 2,140 | 2,140 | 2,140
Amortization of debt issuance cost (loan fees) | 115 | 115 | 115
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 2,255 | 2,255 | 2,255
Cash paid for interest expense | 2,140 | 2,140 | 2,140
April 2025 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense |  |  | 1,969
Amortization of debt issuance cost (loan fees) |  |  | 1,667
Unused facility and other fees (loan fees) |  |  | 0
Total interest expense and fees |  |  | 3,636
Cash paid for interest expense |  |  | 2,635
Debt extinguishment costs |  |  | 1,477
June 2025 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 3,017 | 3,017 | 3,017
Amortization of debt issuance cost (loan fees) | 162 | 162 | 162
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 3,179 | 3,179 | 3,179
Cash paid for interest expense | 3,017 | 3,017 | 3,017
June 2025 3-Year Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 3,000 | 1,567 |
Amortization of debt issuance cost (loan fees) | 155 | 81 |
Unused facility and other fees (loan fees) | 0 | 0 |
Total interest expense and fees | 3,155 | 1,648 |
Cash paid for interest expense | 3,000 | 1,500 |
March 2026 A Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 2,250 | 2,250 | 2,250
Amortization of debt issuance cost (loan fees) | 95 | 95 | 93
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 2,345 | 2,345 | 2,343
Cash paid for interest expense | 2,250 | 2,250 | 1,875
March 2026 B Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 2,275 | 2,275 | 1,877
Amortization of debt issuance cost (loan fees) | 103 | 103 | 85
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 2,378 | 2,378 | 1,962
Cash paid for interest expense | 2,276 | 2,275 | 1,138
September 2026 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 8,697 | 8,698 | 2,513
Amortization of debt issuance cost (loan fees) | 815 | 815 | 236
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 9,512 | 9,513 | 2,749
Cash paid for interest expense | 8,532 | 8,531 | 0
Amortization of original issue discounts | 166 | 166 | 48
January 2027 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 12,316 | 11,630 |
Amortization of debt issuance cost (loan fees) | 828 | 782 |
Unused facility and other fees (loan fees) | 0 | 0 |
Total interest expense and fees | 13,144 | 12,412 |
Cash paid for interest expense | 11,812 | 5,906 |
Amortization of original issue discounts | 503 | 475 |
2031 Asset-Backed Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 7,613 | 3,975 |
Amortization of debt issuance cost (loan fees) | 399 | 209 |
Unused facility and other fees (loan fees) | 0 | 0 |
Total interest expense and fees | 8,012 | 4,184 |
Cash paid for interest expense | 7,425 | 3,671 |
Amortization of original issue discounts | 188 | 98 |
2033 Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 2,500 | 2,500 | 2,500
Amortization of debt issuance cost (loan fees) | 108 | 108 | 108
Unused facility and other fees (loan fees) | 0 | 0 | 0
Total interest expense and fees | 2,608 | 2,608 | 2,608
Cash paid for interest expense | 2,500 | 2,500 | 2,500
2027 Asset-Backed Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense |  |  | 4,888
Amortization of debt issuance cost (loan fees) |  |  | 2,176
Unused facility and other fees (loan fees) |  |  | 0
Total interest expense and fees |  |  | 7,064
Cash paid for interest expense |  |  | 4,972
Debt extinguishment costs |  |  | 1,272
2028 Asset-Backed Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense |  |  | 8,139
Amortization of debt issuance cost (loan fees) |  |  | 2,351
Unused facility and other fees (loan fees) |  |  | 0
Total interest expense and fees |  |  | 10,490
Cash paid for interest expense |  |  | 8,240
Debt extinguishment costs |  |  | 1,670
2022 Convertible Notes(3) |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense |  | 923 | 10,734
Amortization of debt issuance cost (loan fees) |  | 148 | 892
Unused facility and other fees (loan fees) |  | 0 | 0
Total interest expense and fees |  | 1,071 | 11,626
Cash paid for interest expense |  | 5,004 | 10,062
Amortization of original issue discounts |  | 112 | 671
Wells Facility |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense |  |  | 0
Amortization of debt issuance cost (loan fees) |  |  | 198
Unused facility and other fees (loan fees) |  |  | 675
Total interest expense and fees |  |  | 873
Cash paid for interest expense |  |  | 0
MUFG Bank Facility |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 5,583 | 4,548 | 672
Amortization of debt issuance cost (loan fees) | 1,770 | 941 | 1,228
Unused facility and other fees (loan fees) | 2,782 | 2,285 | 1,906
Total interest expense and fees | 10,135 | 7,774 | 3,806
Cash paid for interest expense | 5,948 | 4,097 | 672
SMBC Facility |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 8,658 | 1,209 | 57
Amortization of debt issuance cost (loan fees) | 693 | 315 | 33
Unused facility and other fees (loan fees) | 940 | 513 | 44
Total interest expense and fees | 10,291 | 2,037 | 134
Cash paid for interest expense | $ 8,678 | $ 1,047 | $ 0

X
- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-1A Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_AmortizationOfDebtDiscountPremium
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_AmortizationOfFinancingCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1I -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480167/946-830-55-10 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483581/946-220-45-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-3 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (210.5-03(11)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483013/835-20-50-1 + Details
Name: | us-gaap_InterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69E -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69F -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-6 + Details
Name: | us-gaap_InterestExpenseDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-25 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
Name: | us-gaap_InterestPaidNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The loan servicing fees paid to third parties that relate to loan expenses for a portfolio containing the entire group of loans owned by the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_LoanPortfolioExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_SBADebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_TwoThousandTwentyTwoNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_JulyTwoThousandTwentyFourNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_FebruaryTwoThousandTwentyFiveNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_AprilTwoThousandTwentyFiveNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_JuneTwoThousandTwentyFiveNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_JuneTwoThousandTwentyFiveThreeYearNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_MarchTwoThousandTwentySixANotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_MarchTwoThousandTwentySixBNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_SeptemberTwoThousandTwentySixNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_JanuaryTwoThousandTwentySevenNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_TwoThousandThirtyOneAssetBackedNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_TwoThousandThirtyThreeNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_TwoThousandTwentySevenAssetBackedNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_TwoThousandTwentyEightAssetBackedNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_TwoThousandTwentyTwoConvertibleNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_WellsFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_MUFGBankFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=htgc_SMBCFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |