Consolidated Statements of Changes in Net Assets - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Sep. 30, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
| Balance as of beginning of period (in shares) | 88,398,713 | 88,398,713 | ||||||
| Balance as of beginning of period | $ 2,884,217 | $ 2,840,133 | $ 2,797,838 | $ 2,578,956 | $ 2,515,970 | $ 2,477,399 | $ 2,797,838 | $ 2,477,399 |
| Public offering of common stock, net of offering costs | 6,859 | 10,833 | 5,198 | 65,760 | 42,217 | 5,696 | ||
| Share‑based compensation | 5,433 | 5,416 | 4,842 | 4,868 | 4,883 | 4,103 | ||
| Purchase of vested stock for employee payroll tax withholding | (4) | (10,015) | (7,322) | (14) | ||||
| Dividend reinvestment (in shares) | 471,425 | 552,691 | ||||||
| Dividend reinvestment | 9,586 | 9,379 | 9,087 | 9,301 | 8,788 | 8,441 | $ 28,052 | $ 26,530 |
| Amortization of directors’ deferred compensation | 91 | 97 | 108 | 108 | 106 | 102 | ||
| Issuance of restricted stock, net of forfeited shares | 0 | 0 | ||||||
| Net increase in net assets resulting from operations | 123,671 | 122,534 | 116,082 | 124,007 | 102,688 | 107,147 | $ 362,287 | 333,847 |
| Dividends to stockholders | $ (95,278) | (94,160) | (93,022) | (90,746) | (88,374) | (86,904) | ||
| Balance as of ending of period (in shares) | 89,536,504 | 89,536,504 | ||||||
| Balance as of ending of period | $ 2,934,575 | $ 2,884,217 | $ 2,840,133 | $ 2,692,254 | $ 2,578,956 | $ 2,515,970 | $ 2,934,575 | $ 2,692,254 |
| Common Stock | ||||||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
| Balance as of beginning of period (in shares) | 89,282,595 | 88,659,597 | 88,400,391 | 86,552,506 | 85,163,633 | 84,833,002 | 88,400,391 | 84,833,002 |
| Balance as of beginning of period | $ 893 | $ 887 | $ 884 | $ 865 | $ 851 | $ 848 | $ 884 | $ 848 |
| Public offering of common stock, net of offering costs (in shares) | 111,941 | 195,454 | 89,091 | 1,323,754 | 874,309 | 128,942 | ||
| Public offering of common stock, net of offering costs | $ 1 | $ 2 | $ 1 | $ 13 | $ 9 | $ 1 | ||
| Purchase of vested stock for employee payroll tax withholding (in shares) | (66) | (177,024) | (3) | (154,751) | (295) | |||
| Purchase of vested stock for employee payroll tax withholding | $ (2) | $ (2) | ||||||
| Dividend reinvestment (in shares) | 146,971 | 167,705 | 156,749 | 186,195 | 179,511 | 186,985 | ||
| Dividend reinvestment | $ 1 | $ 2 | $ 2 | $ 2 | $ 2 | $ 2 | ||
| Issuance of restricted stock, net of forfeited shares (in shares) | (4,937) | 436,863 | 13,366 | (2,665) | 489,804 | 14,999 | ||
| Issuance of restricted stock, net of forfeited shares | $ 4 | $ 5 | ||||||
| Balance as of ending of period (in shares) | 89,536,504 | 89,282,595 | 88,659,597 | 88,059,787 | 86,552,506 | 85,163,633 | 89,536,504 | 88,059,787 |
| Balance as of ending of period | $ 895 | $ 893 | $ 887 | $ 880 | $ 865 | $ 851 | $ 895 | $ 880 |
| Additional Paid-In Capital | ||||||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
| Balance as of beginning of period | 2,429,817 | 2,413,914 | 2,394,492 | 2,337,879 | 2,289,042 | 2,270,549 | 2,394,492 | 2,270,549 |
| Public offering of common stock, net of offering costs | 6,858 | 10,831 | 5,197 | 65,747 | 42,208 | 5,695 | ||
| Share‑based compensation | 5,433 | 5,416 | 4,842 | 4,868 | 4,883 | 4,103 | ||
| Purchase of vested stock for employee payroll tax withholding | (4) | (10,013) | (7,320) | (14) | ||||
| Dividend reinvestment | 9,585 | 9,377 | 9,085 | 9,299 | 8,786 | 8,439 | ||
| Amortization of directors’ deferred compensation | 91 | 97 | 108 | 108 | 106 | 102 | ||
| Issuance of restricted stock, net of forfeited shares | (4) | (5) | ||||||
| Dividends to stockholders | 207 | 199 | 190 | 188 | 179 | 168 | ||
| Balance as of ending of period | 2,451,987 | 2,429,817 | 2,413,914 | 2,418,089 | 2,337,879 | 2,289,042 | 2,451,987 | 2,418,089 |
| Total Undistributed Earnings | ||||||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||||||||
| Balance as of beginning of period | 453,507 | 425,332 | 402,462 | 240,212 | 226,077 | 206,002 | 402,462 | 206,002 |
| Net increase in net assets resulting from operations | 123,671 | 122,534 | 116,082 | 124,007 | 102,688 | 107,147 | ||
| Dividends to stockholders | (95,485) | (94,359) | (93,212) | (90,934) | (88,553) | (87,072) | ||
| Balance as of ending of period | $ 481,693 | $ 453,507 | $ 425,332 | $ 273,285 | $ 240,212 | $ 226,077 | $ 481,693 | $ 273,285 |
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- Definition Adjustments to Additional Paid in Capital, Amortization of Directors’ Deferred Compensation No definition available.
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- Definition Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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