Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details)

v3.21.2
SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value $ 833,841,000 $ 302,914,000
Less than 12 Months, Unrealized Losses (11,257,000) (2,239,000)
More than 12 Months, Fair Value 19,961,000 17,585,000
More than 12 Months, Unrealized Losses (281,000) (101,000)
Total, Fair Value 853,802,000 320,499,000
Unrealized Losses, Total (11,538,000) (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 4,607,000 5,456,000
More than 12 Months, Unrealized Losses (44,000) (52,000)
Total, Fair Value 4,607,000 5,456,000
Unrealized Losses, Total (44,000) (52,000)
Obligations of states and political subdivisions    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 92,775,000 5,091,000
Less than 12 Months, Unrealized Losses (751,000) (18,000)
More than 12 Months, Fair Value 0 0
More than 12 Months, Unrealized Losses 0 0
Total, Fair Value 92,775,000 5,091,000
Unrealized Losses, Total (751,000) (18,000)
Corporate and other bonds    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 5,660,000 17,946,000
Less than 12 Months, Unrealized Losses (40,000) (52,000)
More than 12 Months, Fair Value 3,344,000 10,698,000
More than 12 Months, Unrealized Losses (5,000) (47,000)
Total, Fair Value 9,004,000 28,644,000
Unrealized Losses, Total (45,000) (99,000)
Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 120,677,000 23,547,000
Less than 12 Months, Unrealized Losses (1,399,000) (19,000)
More than 12 Months, Fair Value 348,000 376,000
More than 12 Months, Unrealized Losses (1,000) 0
Total, Fair Value 121,025,000 23,923,000
Unrealized Losses, Total (1,400,000) (19,000)
Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 614,729,000 256,330,000
Less than 12 Months, Unrealized Losses (9,067,000) (2,150,000)
More than 12 Months, Fair Value 11,662,000 1,055,000
More than 12 Months, Unrealized Losses (231,000) (2,000)
Total, Fair Value 626,391,000 257,385,000
Unrealized Losses, Total (9,298,000) (2,152,000)
Agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 89,240,000 5,893,000
Less than 12 Months, Unrealized Losses (1,118,000) (2,000)
More than 12 Months, Fair Value 348,000 376,000
More than 12 Months, Unrealized Losses (1,000) 0
Total, Fair Value 89,588,000 6,269,000
Unrealized Losses, Total (1,119,000) (2,000)
Agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 591,860,000 219,388,000
Less than 12 Months, Unrealized Losses (8,805,000) (1,944,000)
More than 12 Months, Fair Value 11,485,000 1,055,000
More than 12 Months, Unrealized Losses (230,000) (2,000)
Total, Fair Value 603,345,000 220,443,000
Unrealized Losses, Total (9,035,000) (1,946,000)
Non-agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 31,437,000 17,654,000
Less than 12 Months, Unrealized Losses (281,000) (17,000)
More than 12 Months, Fair Value 0 0
More than 12 Months, Unrealized Losses 0 0
Total, Fair Value 31,437,000 17,654,000
Unrealized Losses, Total (281,000) (17,000)
Non-agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 22,869,000 36,942,000
Less than 12 Months, Unrealized Losses (262,000) (206,000)
More than 12 Months, Fair Value 177,000 0
More than 12 Months, Unrealized Losses (1,000) 0
Total, Fair Value 23,046,000 36,942,000
Unrealized Losses, Total $ (263,000) $ (206,000)