Annual report pursuant to Section 13 and 15(d)

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

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SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value $ 302,914,000 $ 198,348,000
Less than 12 Months, Unrealized Losses (2,239,000) (1,204,000)
More than 12 Months, Fair Value 17,585,000 75,035,000
More than 12 Months, Unrealized Losses (101,000) (696,000)
Total, Fair Value 320,499,000 273,383,000
Unrealized Losses, Total (2,340,000) (1,900,000)
U.S. government and agency securities    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 0 7,638,000
Less than 12 Months, Unrealized Losses 0 (38,000)
More than 12 Months, Fair Value 5,456,000 0
More than 12 Months, Unrealized Losses (52,000) 0
Total, Fair Value 5,456,000 7,638,000
Unrealized Losses, Total (52,000) (38,000)
Obligations of states and political subdivisions    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 5,091,000 4,526,000
Less than 12 Months, Unrealized Losses (18,000) (29,000)
More than 12 Months, Fair Value 0 0
More than 12 Months, Unrealized Losses 0 0
Total, Fair Value 5,091,000 4,526,000
Unrealized Losses, Total (18,000) (29,000)
Corporate and other bonds    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 17,946,000 17,323,000
Less than 12 Months, Unrealized Losses (52,000) (83,000)
More than 12 Months, Fair Value 10,698,000 19,901,000
More than 12 Months, Unrealized Losses (47,000) (291,000)
Total, Fair Value 28,644,000 37,224,000
Unrealized Losses, Total (99,000) (374,000)
Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 23,547,000 54,714,000
Less than 12 Months, Unrealized Losses (19,000) (554,000)
More than 12 Months, Fair Value 376,000 14,966,000
More than 12 Months, Unrealized Losses 0 (89,000)
Total, Fair Value 23,923,000 69,680,000
Unrealized Losses, Total (19,000) (643,000)
Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 256,330,000 114,147,000
Less than 12 Months, Unrealized Losses (2,150,000) (500,000)
More than 12 Months, Fair Value 1,055,000 40,168,000
More than 12 Months, Unrealized Losses (2,000) (316,000)
Total, Fair Value 257,385,000 154,315,000
Unrealized Losses, Total (2,152,000) (816,000)
Agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 5,893,000 43,552,000
Less than 12 Months, Unrealized Losses (2,000) (530,000)
More than 12 Months, Fair Value 376,000 14,966,000
More than 12 Months, Unrealized Losses 0 (89,000)
Total, Fair Value 6,269,000 58,518,000
Unrealized Losses, Total (2,000) (619,000)
Agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 219,388,000 114,147,000
Less than 12 Months, Unrealized Losses (1,944,000) (500,000)
More than 12 Months, Fair Value 1,055,000 40,168,000
More than 12 Months, Unrealized Losses (2,000) (316,000)
Total, Fair Value 220,443,000 154,315,000
Unrealized Losses, Total (1,946,000) (816,000)
Non-agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 17,654,000 11,162,000
Less than 12 Months, Unrealized Losses (17,000) (24,000)
More than 12 Months, Fair Value 0 0
More than 12 Months, Unrealized Losses 0 0
Total, Fair Value 17,654,000 11,162,000
Unrealized Losses, Total (17,000) (24,000)
Non-agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 36,942,000 0
Less than 12 Months, Unrealized Losses (206,000) 0
More than 12 Months, Fair Value 0 0
More than 12 Months, Unrealized Losses 0 0
Total, Fair Value 36,942,000 0
Unrealized Losses, Total $ (206,000) $ 0