XML 77 R55.htm IDEA: XBRL DOCUMENT v3.20.4
Investment Securities Available-for-sale Securities with Unrealized Losses (Details)
12 Months Ended
Dec. 31, 2020
USD ($)
securities
Dec. 31, 2019
USD ($)
securities
Schedule of Available-for-sale Securities    
Fair value of securities in unrealized loss position less than 12 months $ 174,804,000 $ 291,292,000
Unrealized loss less than 12 months $ 1,925,000 $ 2,622,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities 51 65
Fair value of securities in unrealized loss more than 12 months $ 11,740,000 $ 95,701,000
Unrealized loss more than 12 months $ 381,000 $ 1,970,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities 15 45
Fair value of securities in unrealized loss $ 186,544,000 $ 386,993,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 2,306,000 4,592,000
Other-than-temporary impairments 0  
Debt Securities, Available-for-sale, Allowance for Credit Loss 0  
States and political subdivisions    
Schedule of Available-for-sale Securities    
Fair value of securities in unrealized loss position less than 12 months 17,651,000 6,226,000
Unrealized loss less than 12 months $ 124,000 $ 74,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities 5 2
Fair value of securities in unrealized loss more than 12 months $ 0 $ 2,441,000
Unrealized loss more than 12 months $ 0 $ 57,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities 0 1
Fair value of securities in unrealized loss $ 17,651,000 $ 8,667,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 124,000 131,000
Residential mortgage-backed securities    
Schedule of Available-for-sale Securities    
Fair value of securities in unrealized loss position less than 12 months 156,659,000 284,096,000
Unrealized loss less than 12 months $ 1,795,000 $ 2,527,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities 45 62
Fair value of securities in unrealized loss more than 12 months $ 9,892,000 $ 88,993,000
Unrealized loss more than 12 months $ 229,000 $ 1,657,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities 13 39
Fair value of securities in unrealized loss $ 166,551,000 $ 373,089,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 2,024,000 4,184,000
Commercial mortgage-backed securities    
Schedule of Available-for-sale Securities    
Fair value of securities in unrealized loss position less than 12 months   970,000
Unrealized loss less than 12 months   $ 21,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities   1
Fair value of securities in unrealized loss more than 12 months   $ 2,409,000
Unrealized loss more than 12 months   $ 114,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities   3
Fair value of securities in unrealized loss   $ 3,379,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss   135,000
Bank-issued trust preferred securities    
Schedule of Available-for-sale Securities    
Fair value of securities in unrealized loss position less than 12 months 494,000 0
Unrealized loss less than 12 months $ 6,000 $ 0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities 1 0
Fair value of securities in unrealized loss more than 12 months $ 1,848,000 $ 1,858,000
Unrealized loss more than 12 months $ 152,000 $ 142,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities 2 2
Fair value of securities in unrealized loss $ 2,342,000 $ 1,858,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ 158,000 $ 142,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities 2  
Mortgage-backed securities issued by US Government sponsored agencies    
Schedule of Available-for-sale Securities    
Percentage of mortgage-backed securities in unrealized loss position for less than 12 months 99.00%  
Mortgage-backed securities privately issued    
Schedule of Available-for-sale Securities    
Percentage of mortgage-backed securities in unrealized loss position for less than 12 months 1.00%  
Number of securities at an unrealized loss position less than 12 months | securities 2  
Fair value within book value 90.00%