XML 85 R58.htm IDEA: XBRL DOCUMENT v3.22.0.1
Securities Available for Sale - Summary of Securities Available for Sale (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains $ 16,266 $ 48,041
Gross Unrealized Losses (35,639) (1,863)
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 2,685,648 2,239,433
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest 2,666,275 2,285,611
Collateralized mortgage obligations    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains 3,357 11,482
Gross Unrealized Losses (16,470) (844)
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 1,039,543 990,679
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,026,430 1,001,317
Residential    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains 1,985 8,460
Gross Unrealized Losses (11,874) (114)
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 769,113 672,667
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest 759,224 681,013
Commercial    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains 9,103 25,026
Gross Unrealized Losses (5,360) (21)
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 595,659 482,874
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest 599,402 507,879
Corporate securities    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains 130 15
Gross Unrealized Losses (1,044) (881)
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 23,398 7,000
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest 22,484 6,134
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains 1,680 3,058
Gross Unrealized Losses (767) (3)
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 104,371 86,213
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0 0
Debt Securities, Available-for-Sale, Excluding Accrued Interest 105,284 $ 89,268
Asset-backed Securities    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Gains 11  
Gross Unrealized Losses (124)  
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 153,564  
Debt Securities, Available-for-Sale, Amortized Cost, Allowance for Credit Loss, Excluding Accrued Interest 0  
Debt Securities, Available-for-Sale, Excluding Accrued Interest $ 153,451