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Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Allowance for credit losses and nonperforming assets valuation allowance | $ 217,731 | $ 191,187
Investments in qualified affordable housing partnerships, tax credit and other investments, net | 28,216 | 21,011
Stock compensation and other accrued compensation | 33,169 | 25,857
Interest income on nonaccrual loans | 7,034 | 5,185
State taxes | 9,885 | 13,259
Net unrealized losses on debt securities and derivatives | 242,303 | 309,837
Premises and equipment | 1,782 | 3,827
Lease liabilities | 32,636 | 34,859
FDIC special assessment charge | 22,212 | 0
Other | 9,019 | 6,169
Total deferred tax assets | 603,987 | 611,191
Deferred tax liabilities: |  |
Equipment lease financing | 15,564 | 27,237
Investments in qualified affordable housing partnerships, tax credit and other investments, net | 23,103 | 7,709
FHLB stock dividends | 1,947 | 1,926
Mortgage servicing assets | 2,102 | 1,963
Acquired debts | 1,398 | 1,477
Prepaid expenses | 2,981 | 2,478
Operating lease right-of-use assets | 30,272 | 32,606
Other | 7,871 | 6,270
Total deferred tax liabilities | 85,238 | 81,666
Net deferred tax assets | $ 518,749 | $ 529,525

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