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Securities (Schedule of Information Regarding Securities with Unrealized Losses) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS and HTM | $ 1,347,801 | $ 555,070
Unrealized Losses, AFS and HTM | 21,319 | 2,348
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS and HTM | 17,449 | 7,003
Unrealized Losses, AFS and HTM | 342 | 332
Total |  |
Fair Value, AFS and HTM | 1,365,250 | 562,073
Unrealized Losses, AFS and HTM | 21,661 | 2,680
Government-sponsored enterprise securities |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS | 67,872 | 29,812
Unrealized Losses, AFS | 2,143 | 181
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS | 0 | 0
Unrealized Losses, AFS | 0 | 0
Total |  |
Fair Value, AFS | 67,872 | 29,812
Unrealized Losses, AFS | 2,143 | 181
Mortgage-backed securities |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS and HTM | 1,189,049 | 497,992
Unrealized Losses, AFS and HTM | 16,975 | 1,957
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS and HTM | 12,596 | 6,168
Unrealized Losses, AFS and HTM | 196 | 167
Total |  |
Fair Value, AFS and HTM | 1,201,645 | 504,160
Unrealized Losses, AFS and HTM | 17,171 | 2,124
Corporate bonds |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, AFS | 0 | 3,956
Unrealized Losses, AFS | 0 | 45
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, AFS | 4,853 | 835
Unrealized Losses, AFS | 146 | 165
Total |  |
Fair Value, AFS | 4,853 | 4,791
Unrealized Losses, AFS | 146 | 210
State and local governments |  |
Securities in an Unrealized Loss Position for Less than 12 Months |  |
Fair Value, HTM | 90,880 | 23,310
Unrealized Losses, HTM | 2,201 | 165
Securities in an Unrealized Loss Position for More than 12 Months |  |
Fair Value, HTM | 0 | 0
Unrealized Losses, HTM | 0 | 0
Total |  |
Fair Value, HTM | 90,880 | 23,310
Unrealized Losses, HTM | $ 2,201 | $ 165

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