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Securities (Schedule of Available-for-sale, Unrealized Loss on Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 Months, Fair Value | $ 487,064 | $ 282,342
Less than 12 Months, Gross Unrealized Losses | $ (47,930) | $ (1,772)
Less than 12 Months, Number of Securities | 186 | 51
12 Months or Greater, Fair Value | $ 32,036 | $ 8,812
12 Months or Greater, Gross Unrealized Losses | $ (3,939) | $ (131)
12 Months or Greater, Number of Securities | 21 | 8
Total, Fair Value | $ 519,100 | $ 291,154
Total, Gross Unrealized Losses | $ (51,869) | $ (1,903)
Total, Number of Securities | 207 | 59
US Treasury Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 Months, Fair Value | $ 207,805 | $ 99,959
Less than 12 Months, Gross Unrealized Losses | $ (17,749) | $ (518)
Less than 12 Months, Number of Securities | 18 | 11
12 Months or Greater, Fair Value | $ 13,972 |
12 Months or Greater, Gross Unrealized Losses | $ (2,493) |
12 Months or Greater, Number of Securities | 2 |
Total, Fair Value | $ 221,777 | $ 99,959
Total, Gross Unrealized Losses | $ (20,242) | $ (518)
Total, Number of Securities | 20 | 11
US Government-sponsored Enterprises Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 Months, Fair Value | $ 1,267 | $ 14,156
Less than 12 Months, Gross Unrealized Losses | $ (13) | $ (168)
Less than 12 Months, Number of Securities | 1 | 2
12 Months or Greater, Fair Value | $ 366 | $ 579
12 Months or Greater, Gross Unrealized Losses | $ (4) | $ (5)
12 Months or Greater, Number of Securities | 2 | 2
Total, Fair Value | $ 1,633 | $ 14,735
Total, Gross Unrealized Losses | $ (17) | $ (173)
Total, Number of Securities | 3 | 4
Municipal securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 Months, Fair Value | $ 53,565 | $ 2,519
Less than 12 Months, Gross Unrealized Losses | $ (1,308) | $ (2)
Less than 12 Months, Number of Securities | 43 | 1
Total, Fair Value | $ 53,565 | $ 2,519
Total, Gross Unrealized Losses | $ (1,308) | $ (2)
Total, Number of Securities | 43 | 1
Other Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 Months, Fair Value | $ 25,975 | $ 5,983
Less than 12 Months, Gross Unrealized Losses | $ (1,877) | $ (82)
Less than 12 Months, Number of Securities | 22 | 6
12 Months or Greater, Fair Value | $ 2,865 |
12 Months or Greater, Gross Unrealized Losses | $ (249) |
12 Months or Greater, Number of Securities | 3 |
Total, Fair Value | $ 28,840 | $ 5,983
Total, Gross Unrealized Losses | $ (2,126) | $ (82)
Total, Number of Securities | 25 | 6
Mortgage-backed securities (GSEs) [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 Months, Fair Value | $ 198,452 | $ 159,725
Less than 12 Months, Gross Unrealized Losses | $ (26,983) | $ (1,002)
Less than 12 Months, Number of Securities | 102 | 31
12 Months or Greater, Fair Value | $ 14,833 | $ 8,233
12 Months or Greater, Gross Unrealized Losses | $ (1,193) | $ (126)
12 Months or Greater, Number of Securities | 14 | 6
Total, Fair Value | $ 213,285 | $ 167,958
Total, Gross Unrealized Losses | $ (28,176) | $ (1,128)
Total, Number of Securities | 116 | 37

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