Accumulated Other Comprehensive Income - Summary of Changes in Accumulated Balances of AOCI Including Current Period Other Comprehensive Income (Loss) and Reclassifications Out of AOCI (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2021 |
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| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||||||
| Beginning balance | $ 4,391,315 | $ 4,162,010 | $ 4,270,740 | [1],[2] | $ 4,106,002 | [2] | ||||
| Other comprehensive income (loss) before reclassifications | 22,635 | (8,450) | 9,136 | 9,498 | ||||||
| Less: gain (loss) reclassified from AOCI | 4,127 | (2,334) | 8,320 | (5,086) | ||||||
| Tax effect | 841 | 173 | 3,224 | 616 | ||||||
| Net current-period other comprehensive income (loss) | 19,349 | (5,943) | 4,040 | 15,200 | ||||||
| Ending balance | 4,504,807 | 4,241,571 | 4,504,807 | 4,241,571 | ||||||
| Unrealized Gains (Losses) on Cash Flow Hedges | ||||||||||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||||||
| Beginning balance | 8,387 | 2,617 | 15,805 | (20,028) | ||||||
| Other comprehensive income (loss) before reclassifications | 26,255 | (7,711) | 23,030 | 12,182 | ||||||
| Less: gain (loss) reclassified from AOCI | 4,127 | (2,334) | 8,320 | (5,086) | ||||||
| Tax effect | 0 | 0 | 0 | 0 | ||||||
| Net current-period other comprehensive income (loss) | 22,128 | (5,377) | 14,710 | 17,268 | ||||||
| Ending balance | 30,515 | (2,760) | 30,515 | (2,760) | ||||||
| Unrealized Gains (Losses) on Available for-Sale Debt Securities | ||||||||||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||||||
| Beginning balance | (9,264) | 2,387 | (1,373) | 3,889 | ||||||
| Other comprehensive income (loss) before reclassifications | (3,620) | (739) | (13,894) | (2,684) | ||||||
| Less: gain (loss) reclassified from AOCI | 0 | 0 | 0 | 0 | ||||||
| Tax effect | 841 | 173 | 3,224 | 616 | ||||||
| Net current-period other comprehensive income (loss) | (2,779) | (566) | (10,670) | (2,068) | ||||||
| Ending balance | (12,043) | 1,821 | (12,043) | 1,821 | ||||||
| AOCI attributable to parent | ||||||||||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||||||
| Beginning balance | (877) | 5,004 | 14,432 | [2] | (16,139) | [2] | ||||
| Ending balance | $ 18,472 | $ (939) | $ 18,472 | $ (939) | ||||||
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