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Securities - Credit Quality Indicator (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Investment and Mortgage-Backed Securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	$ 368,505
Investment Grade | Investment and Mortgage-Backed Securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	352,518
Non-Investment Grade/Non-rated | Investment and Mortgage-Backed Securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	15,987
State, municipal and sovereign debt obligations | Investment securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	272,250
State, municipal and sovereign debt obligations | Investment Grade | Investment securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	272,250
State, municipal and sovereign debt obligations | Non-Investment Grade/Non-rated | Investment securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	0
Corporate debt securities | Investment securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	64,198
Corporate debt securities | Investment Grade | Investment securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	48,211
Corporate debt securities | Non-Investment Grade/Non-rated | Investment securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	15,987
Mortgage-backed securities: | Non-agency commercial
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	32,057
Mortgage-backed securities: | Investment Grade | Non-agency commercial
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	32,057
Mortgage-backed securities: | Non-Investment Grade/Non-rated | Non-agency commercial
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Debt securities, held-to-maturity	$ 0

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- Definition

Debt Securities, Held-To-Maturity, Net Of Allowance For Credit Losses

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