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Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
ASSETS |  |
Available-for-sale (AFS) debt securities, at amortized cost | $ 10,087,179 | $ 5,470,523
Available-for-sale debt securities pledged as collateral at fair value | 803,896 | 588,484
Allowance for loan losses | 541,579 | 619,983
Loans held-for-investment pledged as collateral | 27,672,561 | 23,263,517
Premises and equipment, accumulated depreciation | $ 139,358 | $ 127,884
STOCKHOLDERS’ EQUITY |  |
Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001
Common stock, shares authorized (in shares) | 200,000,000 | 200,000,000
Common stock, shares issued (in shares) | 167,790,645 | 167,240,600
Treasury stock, shares (in shares) | 25,882,691 | 25,675,371

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