XML 53 R40.htm IDEA: XBRL DOCUMENT v3.21.2
Investment Securities Gross Unrealized Losses and Fair Values of Investments by Category and Length of Time in a Continuous Unrealized Loss Position (Details)
$ in Thousands
Jun. 30, 2021
USD ($)
Security
Dec. 31, 2020
USD ($)
Security
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 43 22
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 709,298 $ 266,636
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (4,917) $ (1,660)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 118 163
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 74,834 $ 105,077
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (1,516) (3,618)
Debt Securities, Available-for-sale, Unrealized Loss Position 784,132 371,713
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (6,433) $ (5,278)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 33  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value $ 580,338  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (12,821)  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value $ 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 0  
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value 580,338  
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss $ (12,821)  
US Government Debt Securities    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 2  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 153,545  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (340)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 153,545  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (340)  
US Government Agencies Debt Securities    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 1  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 62,431  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (98)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 62,431  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (98)  
State and Municipal Securities [Member]    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 12  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 46,851  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (608)  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0  
Debt Securities, Available-for-sale, Unrealized Loss Position 46,851  
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (608)  
Corporate Debt Securities [Member]    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 5 9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 19,921 $ 44,528
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (88) $ (377)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0 $ 6,871
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0 (314)
Debt Securities, Available-for-sale, Unrealized Loss Position 19,921 51,399
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (88) $ (691)
Collateralized Mortgage Obligations [Member]    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 1 3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 30,402 $ 57,601
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (133) $ (115)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0 $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0 0
Debt Securities, Available-for-sale, Unrealized Loss Position 30,402 57,601
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (133) $ (115)
Residential Mortgage Backed Securities [Member]    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 7 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 154,928 $ 20,124
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (1,748) $ (27)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0 $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0 0
Debt Securities, Available-for-sale, Unrealized Loss Position 154,928 20,124
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (1,748) $ (27)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 12  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value $ 203,077  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (5,019)  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value $ 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 0  
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value 203,077  
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss $ (5,019)  
Commercial Mortgage Backed Securities [Member]    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 15 9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 241,220 $ 144,383
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (1,902) $ (1,141)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 0 $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0 0
Debt Securities, Available-for-sale, Unrealized Loss Position 241,220 144,383
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (1,902) $ (1,141)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 21  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value $ 377,261  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ (7,802)  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 0  
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value $ 0  
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 0  
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value 377,261  
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss $ (7,802)  
Auction Rate Securities [Member]    
Schedule of Investments [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | Security 0 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 0 $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss $ 0 $ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | Security 118 162
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer $ 74,834 $ 98,206
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (1,516) (3,304)
Debt Securities, Available-for-sale, Unrealized Loss Position 74,834 98,206
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss $ (1,516) $ (3,304)