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Consolidated Balance Sheets (Parenthetical) - USD ($) $ / shares in Thousands, $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Debt Securities, Available-for-sale, Amortized Cost | $ 5,853,160 | $ 5,898,041
Debt Securities, Held-to-maturity, Fair Value | $ 2,038,037 | $ 2,122,606
Preferred Stock, No Par Value | $ 0 | $ 0
Common Stock, No Par Value | $ 0 | $ 0

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