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SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | $ 1,000,782,000 | $ 302,914,000
Less than 12 Months, Unrealized Losses | (21,058,000) | (2,239,000)
More than 12 Months, Fair Value | 21,288,000 | 17,585,000
More than 12 Months, Unrealized Losses | (93,000) | (101,000)
Total, Fair Value | 1,022,070,000 | 320,499,000
Unrealized Losses, Total | (21,151,000) | (2,340,000)
U.S. government and agency securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 0 | 0
Less than 12 Months, Unrealized Losses | 0 | 0
More than 12 Months, Fair Value | 4,899,000 | 5,456,000
More than 12 Months, Unrealized Losses | (47,000) | (52,000)
Total, Fair Value | 4,899,000 | 5,456,000
Unrealized Losses, Total | (47,000) | (52,000)
Obligations of states and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 271,172,000 | 5,091,000
Less than 12 Months, Unrealized Losses | (4,956,000) | (18,000)
More than 12 Months, Fair Value | 0 | 0
More than 12 Months, Unrealized Losses | 0 | 0
Total, Fair Value | 271,172,000 | 5,091,000
Unrealized Losses, Total | (4,956,000) | (18,000)
Corporate and other bonds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 42,612,000 | 17,946,000
Less than 12 Months, Unrealized Losses | (237,000) | (52,000)
More than 12 Months, Fair Value | 4,785,000 | 10,698,000
More than 12 Months, Unrealized Losses | (6,000) | (47,000)
Total, Fair Value | 47,397,000 | 28,644,000
Unrealized Losses, Total | (243,000) | (99,000)
Commercial |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 92,444,000 | 23,547,000
Less than 12 Months, Unrealized Losses | (1,724,000) | (19,000)
More than 12 Months, Fair Value | 359,000 | 376,000
More than 12 Months, Unrealized Losses | (1,000) | 0
Total, Fair Value | 92,803,000 | 23,923,000
Unrealized Losses, Total | (1,725,000) | (19,000)
Residential |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 594,554,000 | 256,330,000
Less than 12 Months, Unrealized Losses | (14,141,000) | (2,150,000)
More than 12 Months, Fair Value | 11,245,000 | 1,055,000
More than 12 Months, Unrealized Losses | (39,000) | (2,000)
Total, Fair Value | 605,799,000 | 257,385,000
Unrealized Losses, Total | (14,180,000) | (2,152,000)
Agency | Commercial |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 65,708,000 | 5,893,000
Less than 12 Months, Unrealized Losses | (1,614,000) | (2,000)
More than 12 Months, Fair Value | 359,000 | 376,000
More than 12 Months, Unrealized Losses | (1,000) | 0
Total, Fair Value | 66,067,000 | 6,269,000
Unrealized Losses, Total | (1,615,000) | (2,000)
Agency | Residential |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 558,523,000 | 219,388,000
Less than 12 Months, Unrealized Losses | (13,650,000) | (1,944,000)
More than 12 Months, Fair Value | 1,175,000 | 1,055,000
More than 12 Months, Unrealized Losses | (18,000) | (2,000)
Total, Fair Value | 559,698,000 | 220,443,000
Unrealized Losses, Total | (13,668,000) | (1,946,000)
Non-agency | Commercial |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 26,736,000 | 17,654,000
Less than 12 Months, Unrealized Losses | (110,000) | (17,000)
More than 12 Months, Fair Value | 0 | 0
More than 12 Months, Unrealized Losses | 0 | 0
Total, Fair Value | 26,736,000 | 17,654,000
Unrealized Losses, Total | (110,000) | (17,000)
Non-agency | Residential |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 36,031,000 | 36,942,000
Less than 12 Months, Unrealized Losses | (491,000) | (206,000)
More than 12 Months, Fair Value | 10,070,000 | 0
More than 12 Months, Unrealized Losses | (21,000) | 0
Total, Fair Value | 46,101,000 | 36,942,000
Unrealized Losses, Total | $ (512,000) | $ (206,000)

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