XML 99 R83.htm IDEA: XBRL DOCUMENT v3.20.4
Investment Securities - Securities with gross unrealized losses (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
Investment Securities    
Number of securities with gross unrealized loss | item 86  
Securities Available for Sale, Gross Unrealized Losses    
Less Than Twelve Months $ 3,144 $ 3,186
Twelve Months or More 1,021 1,353
Securities Available for Sale, Fair Value    
Less Than Twelve Months 542,297 503,728
Twelve Months or More 105,125 141,982
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]    
Less Than Twelve Months 1,123  
Securities Held to Maturity, Fair Value    
Less Than Twelve Months 240,591  
Government-sponsored entities debt    
Securities Available for Sale, Gross Unrealized Losses    
Less Than Twelve Months 642  
Securities Available for Sale, Fair Value    
Less Than Twelve Months 24,358  
State and municipal obligations    
Securities Available for Sale, Gross Unrealized Losses    
Less Than Twelve Months 27 764
Securities Available for Sale, Fair Value    
Less Than Twelve Months 8,620 42,070
Mortgage-backed securities    
Securities Available for Sale, Gross Unrealized Losses    
Less Than Twelve Months 2,475 2,422
Twelve Months or More 1,021 1,353
Securities Available for Sale, Fair Value    
Less Than Twelve Months 509,319 461,658
Twelve Months or More 105,125 $ 141,982
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]    
Less Than Twelve Months 1,123  
Securities Held to Maturity, Fair Value    
Less Than Twelve Months $ 240,591