XML 31 R20.htm IDEA: XBRL DOCUMENT
v3.25.3

Investments (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of Disposition of Fixed Income and Equity Securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Sales | ​ | Proceeds | ​ | Gross Realized | ​ | Net Realized
(in thousands) |  | From Sales |  | Gains |  | Losses |  | Gain (Loss)
2025 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed income securities - available-for-sale | ​ | $ | 383,956 | ​ | $ | 5,076 | ​ | $ | (3,219) | ​ | $ | 1,857
Equity securities | ​ | ​ | 87,874 | ​ | ​ | 46,478 | ​ | ​ | (991) | ​ | ​ | 45,487
2024 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed income securities - available-for-sale | ​ | $ | 98,696 | ​ | $ | 538 | ​ | $ | (2,489) | ​ | $ | (1,951)
Equity securities | ​ | ​ | 44,863 | ​ | ​ | 20,276 | ​ | ​ | (340) | ​ | ​ | 19,936
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Calls/Maturities | ​ | ​ | ​ | ​ | Gross Realized | ​ | Net Realized
(in thousands) |  | Proceeds |  | Gains |  | Losses |  | Gain (Loss)
2025 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed income securities - available-for-sale | ​ | $ | 344,629 | ​ | $ | 271 | ​ | $ | (72) | ​ | $ | 199
2024 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed income securities - available-for-sale | ​ | $ | 240,200 | ​ | $ | 89 | ​ | $ | (1,062) | ​ | $ | (973)
Fair Value, Assets Measured on Recurring Basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of September 30, 2025
​ | ​ | Quoted Prices in | ​ | Significant Other | ​ | Significant | ​ | ​ | ​
​ | ​ | Active Markets for | ​ | Observable | ​ | Unobservable | ​ | ​ | ​
​ | ​ | Identical Assets | ​ | Inputs | ​ | Inputs | ​ | ​ | ​
(in thousands) |  | (Level 1) |  | (Level 2) |  | (Level 3) |  | Total
Fixed income securities - available-for-sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government | ​ | $ | — | ​ | $ | 399,593 | ​ | $ | — | ​ | $ | 399,593
U.S. agency | ​ | ​ | — | ​ | ​ | 55,483 | ​ | ​ | — | ​ | ​ | 55,483
Non-U.S. government & agency | ​ | ​ | — | ​ | ​ | 11,376 | ​ | ​ | 1,001 | ​ | ​ | 12,377
Agency MBS | ​ | ​ | — | ​ | ​ | 604,351 | ​ | ​ | — | ​ | ​ | 604,351
ABS/CMBS/MBS* | ​ | ​ | — | ​ | ​ | 563,754 | ​ | ​ | — | ​ | ​ | 563,754
Corporate | ​ | ​ | — | ​ | ​ | 1,393,777 | ​ | ​ | 96,258 | ​ | ​ | 1,490,035
Municipal | ​ | ​ | — | ​ | ​ | 410,891 | ​ | ​ | — | ​ | ​ | 410,891
Total fixed income securities - available-for-sale | ​ | $ | — | ​ | $ | 3,439,225 | ​ | $ | 97,259 | ​ | $ | 3,536,484
Equity securities | ​ | ​ | 874,621 | ​ | ​ | — | ​ | ​ | 4,251 | ​ | ​ | 878,872
Total | ​ | $ | 874,621 | ​ | $ | 3,439,225 | ​ | $ | 101,510 | ​ | $ | 4,415,356
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2024
​ | ​ | Quoted Prices in | ​ | Significant Other | ​ | Significant | ​ | ​ | ​
​ | ​ | Active Markets for | ​ | Observable | ​ | Unobservable | ​ | ​ | ​
​ | ​ | Identical Assets | ​ | Inputs | ​ | Inputs | ​ | ​ | ​
(in thousands) |  | (Level 1) |  | (Level 2) |  | (Level 3) |  | Total
Fixed income securities - available-for-sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government | ​ | $ | — | ​ | $ | 515,635 | ​ | $ | — | ​ | $ | 515,635
U.S. agency | ​ | ​ | — | ​ | ​ | 54,338 | ​ | ​ | — | ​ | ​ | 54,338
Non-U.S. government & agency | ​ | ​ | — | ​ | ​ | 6,898 | ​ | ​ | 973 | ​ | ​ | 7,871
Agency MBS | ​ | ​ | — | ​ | ​ | 396,223 | ​ | ​ | — | ​ | ​ | 396,223
ABS/CMBS/MBS* | ​ | ​ | — | ​ | ​ | 410,248 | ​ | ​ | — | ​ | ​ | 410,248
Corporate | ​ | ​ | — | ​ | ​ | 1,256,991 | ​ | ​ | 89,530 | ​ | ​ | 1,346,521
Municipal | ​ | ​ | — | ​ | ​ | 444,960 | ​ | ​ | — | ​ | ​ | 444,960
Total fixed income securities - available-for-sale | ​ | $ | — | ​ | $ | 3,085,293 | ​ | $ | 90,503 | ​ | $ | 3,175,796
Equity securities | ​ | ​ | 731,569 | ​ | ​ | — | ​ | ​ | 4,622 | ​ | ​ | 736,191
Total | ​ | $ | 731,569 | ​ | $ | 3,085,293 | ​ | $ | 95,125 | ​ | $ | 3,911,987
* | Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities
​
Summary of Changes in Balance of Level 3 Securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
(in thousands) | ​ | 2025 |  | 2024 |  | 2025 |  | 2024
Beginning balance | ​ | $ | 101,534 | ​ | $ | 72,680 | ​ | $ | 95,125 | ​ | $ | 62,096
Net realized and unrealized gains (losses) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Included in other comprehensive earnings (loss) | ​ | ​ | 1,130 | ​ | ​ | 3,104 | ​ | ​ | 2,922 | ​ | ​ | 2,789
Purchases | ​ | ​ | 6,995 | ​ | ​ | 16,069 | ​ | ​ | 15,093 | ​ | ​ | 28,379
Sales / Calls / Maturities | ​ | ​ | (8,149) | ​ | ​ | (326) | ​ | ​ | (11,630) | ​ | ​ | (1,737)
Transfers into Level 3 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Transfers out of Level 3 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Balance as of September 30, | ​ | $ | 101,510 | ​ | $ | 91,527 | ​ | $ | 101,510 | ​ | $ | 91,527
Change in unrealized gains (losses) during the period for Level 3 assets held at period-end - included in other comprehensive earnings (loss) | ​ | $ | 1,244 | ​ | $ | 3,104 | ​ | $ | 2,899 | ​ | $ | 2,789
Schedule of Contractual Maturity of Securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2025
(in thousands) |  | Amortized Cost |  | Fair Value
Due in one year or less | ​ | $ | 263,214 | ​ | $ | 262,065
Due after one year through five years | ​ | ​ | 743,950 | ​ | ​ | 739,290
Due after five years through 10 years | ​ | ​ | 890,177 | ​ | ​ | 891,802
Due after 10 years | ​ | ​ | 548,742 | ​ | ​ | 475,222
ABS/CMBS/MBS* | ​ | ​ | 1,209,871 | ​ | ​ | 1,168,105
Total available-for-sale | ​ | $ | 3,655,954 | ​ | $ | 3,536,484
* | Asset-backed, commercial mortgage-backed and mortgage-backed securities
Schedule of Amortized Cost and Fair Value of Available-for-sale Securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2025
​ | ​ | Cost or | ​ | Allowance | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | for Credit | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(in thousands) |  | Cost |  | Losses |  | Gains |  | Losses |  | Value
U.S. government | ​ | $ | 395,751 | ​ | $ | — | ​ | $ | 5,165 | ​ | $ | (1,323) | ​ | $ | 399,593
U.S. agency | ​ | ​ | 55,268 | ​ | ​ | — | ​ | ​ | 850 | ​ | ​ | (635) | ​ | ​ | 55,483
Non-U.S. government & agency | ​ | ​ | 12,730 | ​ | ​ | — | ​ | ​ | 261 | ​ | ​ | (614) | ​ | ​ | 12,377
Agency MBS | ​ | ​ | 632,284 | ​ | ​ | — | ​ | ​ | 3,532 | ​ | ​ | (31,465) | ​ | ​ | 604,351
ABS/CMBS/MBS* | ​ | ​ | 577,587 | ​ | ​ | (614) | ​ | ​ | 3,570 | ​ | ​ | (16,789) | ​ | ​ | 563,754
Corporate | ​ | ​ | 1,501,345 | ​ | ​ | (285) | ​ | ​ | 17,536 | ​ | ​ | (28,561) | ​ | ​ | 1,490,035
Municipal | ​ | ​ | 480,989 | ​ | ​ | — | ​ | ​ | 883 | ​ | ​ | (70,981) | ​ | ​ | 410,891
Total Fixed Income | ​ | $ | 3,655,954 | ​ | $ | (899) | ​ | $ | 31,797 | ​ | $ | (150,368) | ​ | $ | 3,536,484
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
​ | ​ | Cost or | ​ | Allowance | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | for Credit | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(in thousands) |  | Cost |  | Losses |  | Gains |  | Losses |  | Value
U.S. government | ​ | $ | 525,608 | ​ | $ | — | ​ | $ | 309 | ​ | $ | (10,282) | ​ | $ | 515,635
U.S. agency | ​ | ​ | 55,921 | ​ | ​ | — | ​ | ​ | 261 | ​ | ​ | (1,844) | ​ | ​ | 54,338
Non-U.S. government & agency | ​ | ​ | 8,959 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (1,088) | ​ | ​ | 7,871
Agency MBS | ​ | ​ | 438,545 | ​ | ​ | — | ​ | ​ | 927 | ​ | ​ | (43,249) | ​ | ​ | 396,223
ABS/CMBS/MBS* | ​ | ​ | 430,973 | ​ | ​ | (8) | ​ | ​ | 2,208 | ​ | ​ | (22,925) | ​ | ​ | 410,248
Corporate | ​ | ​ | 1,397,676 | ​ | ​ | (189) | ​ | ​ | 4,737 | ​ | ​ | (55,703) | ​ | ​ | 1,346,521
Municipal | ​ | ​ | 533,477 | ​ | ​ | — | ​ | ​ | 1,003 | ​ | ​ | (89,520) | ​ | ​ | 444,960
Total Fixed Income | ​ | $ | 3,391,159 | ​ | $ | (197) | ​ | $ | 9,445 | ​ | $ | (224,611) | ​ | $ | 3,175,796
* | Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities
Schedule of Debt Securities Available-for-sale Allowance for Credit Loss | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
(in thousands) |  | 2025 |  | 2024 |  | 2025 |  | 2024
Beginning balance | ​ | $ | 245 | ​ | $ | 228 | ​ | $ | 197 | ​ | $ | 306
Increase to allowance from securities for which credit losses were not previously recorded | ​ | ​ | 717 | ​ | ​ | 30 | ​ | ​ | 720 | ​ | ​ | 30
Reduction from securities sold during the period | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (89)
Net increase (decrease) from securities that had an allowance at the beginning of the period | ​ | ​ | (63) | ​ | ​ | (24) | ​ | ​ | (18) | ​ | ​ | (13)
Balance as of September 30, | ​ | $ | 899 | ​ | $ | 234 | ​ | $ | 899 | ​ | $ | 234
Schedule of Securities in an Unrealized Loss Position Segregated by Type and Length of Time in an Unrealized Loss Position | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2025 | ​ | December 31, 2024
(in thousands) |  | < 12 Mos. |  | 12 Mos. & Greater |  | Total |  | < 12 Mos. |  | 12 Mos. & Greater |  | Total
U.S. government | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | 11,055 | ​ | $ | 105,375 | ​ | $ | 116,430 | ​ | $ | 303,226 | ​ | $ | 157,418 | ​ | $ | 460,644
Amortized cost | ​ | ​ | 11,078 | ​ | ​ | 106,675 | ​ | ​ | 117,753 | ​ | ​ | 309,836 | ​ | ​ | 161,090 | ​ | ​ | 470,926
Unrealized loss | ​ | $ | (23) | ​ | $ | (1,300) | ​ | $ | (1,323) | ​ | $ | (6,610) | ​ | $ | (3,672) | ​ | $ | (10,282)
U.S. agency | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | — | ​ | $ | 30,621 | ​ | $ | 30,621 | ​ | $ | 24,024 | ​ | $ | 18,330 | ​ | $ | 42,354
Amortized cost | ​ | ​ | — | ​ | ​ | 31,256 | ​ | ​ | 31,256 | ​ | ​ | 24,910 | ​ | ​ | 19,288 | ​ | ​ | 44,198
Unrealized loss | ​ | $ | — | ​ | $ | (635) | ​ | $ | (635) | ​ | $ | (886) | ​ | $ | (958) | ​ | $ | (1,844)
Non-U.S. government | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | — | ​ | $ | 4,188 | ​ | $ | 4,188 | ​ | $ | 4,075 | ​ | $ | 3,796 | ​ | $ | 7,871
Amortized cost | ​ | ​ | — | ​ | ​ | 4,802 | ​ | ​ | 4,802 | ​ | ​ | 4,158 | ​ | ​ | 4,801 | ​ | ​ | 8,959
Unrealized Loss | ​ | $ | — | ​ | $ | (614) | ​ | $ | (614) | ​ | $ | (83) | ​ | $ | (1,005) | ​ | $ | (1,088)
Agency MBS | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | 149,151 | ​ | $ | 273,022 | ​ | $ | 422,173 | ​ | $ | 108,772 | ​ | $ | 233,625 | ​ | $ | 342,397
Amortized cost | ​ | ​ | 149,737 | ​ | ​ | 303,901 | ​ | ​ | 453,638 | ​ | ​ | 111,674 | ​ | ​ | 273,972 | ​ | ​ | 385,646
Unrealized loss | ​ | $ | (586) | ​ | $ | (30,879) | ​ | $ | (31,465) | ​ | $ | (2,902) | ​ | $ | (40,347) | ​ | $ | (43,249)
ABS/CMBS/MBS* | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | 72,227 | ​ | $ | 149,479 | ​ | $ | 221,706 | ​ | $ | 43,027 | ​ | $ | 164,433 | ​ | $ | 207,460
Amortized cost | ​ | ​ | 72,333 | ​ | ​ | 166,162 | ​ | ​ | 238,495 | ​ | ​ | 43,395 | ​ | ​ | 186,990 | ​ | ​ | 230,385
Unrealized loss | ​ | $ | (106) | ​ | $ | (16,683) | ​ | $ | (16,789) | ​ | $ | (368) | ​ | $ | (22,557) | ​ | $ | (22,925)
Corporate | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | 141,450 | ​ | $ | 622,539 | ​ | $ | 763,989 | ​ | $ | 378,305 | ​ | $ | 700,574 | ​ | $ | 1,078,879
Amortized cost | ​ | ​ | 142,776 | ​ | ​ | 649,774 | ​ | ​ | 792,550 | ​ | ​ | 389,299 | ​ | ​ | 745,283 | ​ | ​ | 1,134,582
Unrealized loss | ​ | $ | (1,326) | ​ | $ | (27,235) | ​ | $ | (28,561) | ​ | $ | (10,994) | ​ | $ | (44,709) | ​ | $ | (55,703)
Municipal | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | 8,179 | ​ | $ | 349,045 | ​ | $ | 357,224 | ​ | $ | 48,514 | ​ | $ | 355,475 | ​ | $ | 403,989
Amortized cost | ​ | ​ | 8,462 | ​ | ​ | 419,743 | ​ | ​ | 428,205 | ​ | ​ | 49,491 | ​ | ​ | 444,018 | ​ | ​ | 493,509
Unrealized loss | ​ | $ | (283) | ​ | $ | (70,698) | ​ | $ | (70,981) | ​ | $ | (977) | ​ | $ | (88,543) | ​ | $ | (89,520)
Total fixed income | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fair value | ​ | $ | 382,062 | ​ | $ | 1,534,269 | ​ | $ | 1,916,331 | ​ | $ | 909,943 | ​ | $ | 1,633,651 | ​ | $ | 2,543,594
Amortized cost | ​ | ​ | 384,386 | ​ | ​ | 1,682,313 | ​ | ​ | 2,066,699 | ​ | ​ | 932,763 | ​ | ​ | 1,835,442 | ​ | ​ | 2,768,205
Unrealized loss | ​ | $ | (2,324) | ​ | $ | (148,044) | ​ | $ | (150,368) | ​ | $ | (22,820) | ​ | $ | (201,791) | ​ | $ | (224,611)
* | Non-agency asset-backed, commercial mortgage-backed and mortgage-backed securities
Schedule of Credit Quality Indicators for Investments in Unrealized Loss Positions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Equivalent | ​ | Equivalent | ​ | (dollars in thousands) | ​ | ​ | ​
NAIC |  | S&P |  | Moody’s | ​ | Amortized | ​ | ​ | ​ | ​ | Unrealized | ​ | Percent | ​
Rating |  | Rating |  | Rating |  | Cost |  | Fair Value |  | Loss |  | to Total | ​
1 | ​ | AAA/AA/A | ​ | Aaa/Aa/A | ​ | $ | 1,675,642 | ​ | $ | 1,539,255 | ​ | $ | (136,387) | ​ | 90.7 | %
2 | ​ | BBB | ​ | Baa | ​ | ​ | 327,018 | ​ | ​ | 315,660 | ​ | ​ | (11,358) | ​ | 7.6 | %
3 | ​ | BB | ​ | Ba | ​ | ​ | 32,804 | ​ | ​ | 32,154 | ​ | ​ | (650) | ​ | 0.4 | %
4 | ​ | B | ​ | B | ​ | ​ | 26,763 | ​ | ​ | 25,279 | ​ | ​ | (1,484) | ​ | 1.0 | %
5 | ​ | CCC | ​ | Caa | ​ | ​ | 3,652 | ​ | ​ | 3,330 | ​ | ​ | (322) | ​ | 0.2 | %
6 | ​ | CC or lower | ​ | Ca or lower | ​ | ​ | 820 | ​ | ​ | 653 | ​ | ​ | (167) | ​ | 0.1 | %
​ | ​ | ​ | ​ | Total | ​ | $ | 2,066,699 | ​ | $ | 1,916,331 | ​ | $ | (150,368) | ​ | 100.0 | %

X
- Definition For all fixed income securities in an unrealized loss position, a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of the unrealized losses (that is, the amount by which the book value exceeds the fair value) organized by credit rating. + References No definition available. + Details
Name: | rli_ScheduleOfFixedIncomeSecuritiesUnrealizedLossOnInvestmentsByCreditQualityIndicatorTableTextBlock
Namespace Prefix: | rli_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-9 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
Name: | us-gaap_ScheduleOfRealizedGainLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of unrealized gains and losses on investments. + References No definition available. + Details
Name: | us-gaap_UnrealizedGainLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration