Stockholders' Equity Reclassifications out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|
| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||||
| Unrealized gains and losses on investment securities reclassified from accumulated other comprehensive income, net of tax | $ (28,642) | $ 9,107 | $ (119,991) | $ 1,037,222 | ||||
| Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | 18,765 | $ 5,100 | $ 68,565 | 0 | $ 38,305 | $ 432,996 | ||
| Reclassification out of Accumulated Other Comprehensive Income [Member] | ||||||||
| Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | ||||||||
| Unrealized gains and losses on investment securities reclassified from accumulated other comprehensive income, net of tax | $ (18,800) | $ 0 | $ (92,400) | $ (471,300) | ||||
| X | ||||||||||
- Definition Amount of unrealized and realized gain (loss) on investment in marketable security, excluding other-than-temporary impairment (OTTI). No definition available.
|
| 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. No definition available.
|
| X | ||||||||||
- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|