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Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax assets: |  |
Allowance for credit losses and nonperforming assets valuation allowance | $ 191,187 | $ 166,398
Investments in qualified affordable housing partnerships, tax credit and other investments, net | 21,011 | 14,977
Stock compensation and other accrued compensation | 25,857 | 23,954
Interest income on nonaccrual loans | 5,185 | 4,192
State taxes | 13,259 | 5,237
Net Unrealized Losses on Debt Securities and Derivatives | 309,837 | 37,423
Tax credit carryforwards | 0 | 8,692
Premises and equipment | 3,827 | 1,434
Lease liabilities | 34,859 | 31,324
Other | 6,169 | 1,018
Total deferred tax assets | 611,191 | 294,649
Deferred tax liabilities: |  |
Equipment lease financing | 27,237 | 26,607
Investments in qualified affordable housing partnerships, tax credit and other investments, net | 7,709 | 12,187
FHLB stock dividends | 1,926 | 1,886
Mortgage servicing assets | 1,963 | 1,759
Acquired debts | 1,477 | 1,536
Prepaid expenses | 2,478 | 1,525
Operating lease right-of-use assets | 32,606 | 29,472
Other | 6,270 | 1,547
Total deferred tax liabilities | 81,666 | 76,519
Net deferred tax assets | $ 529,525 | $ 218,130

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