Securities - Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Available-for-sale (Details) $ in Thousands	Jun. 30, 2022 USD ($) Security	Dec. 31, 2021 USD ($) Security
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	266	104
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 625,360	$ 880,643
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(55,590)	(18,857)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	583,168	82,459
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(95,620)	(3,575)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	1,208,528	963,102
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (151,210)	$ (22,432)
Held to maturity securities continuous unrealized loss position number of positions | Security	3
Held to maturity securities continuous unrealized loss position less than twelve months fair value	$ 2,088
Held to maturity securities continuous unrealized loss position less than 12 months accumulated loss	(11)
Held to maturity securities continuous unrealized loss position twelve months or longer fair value	0
Held to maturity securities continuous unrealized loss position 12 months or longer accumulated loss	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value, Total	2,088
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss, Total	$ (11)
U.S. treasury notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	6	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 31,782	$ 9,946
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(939)	(8)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	31,782	9,946
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (939)	$ (8)
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	16	10
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 45,627	$ 64,585
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(3,195)	(1,590)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	71,078	19,223
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(10,501)	(777)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	116,705	83,808
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (13,696)	$ (2,367)
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	54	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 57,133	$ 9,507
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(4,916)	(56)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	57,133	9,507
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (4,916)	$ (56)
Held to maturity securities continuous unrealized loss position number of positions | Security	3
Held to maturity securities continuous unrealized loss position less than twelve months fair value	$ 2,088
Held to maturity securities continuous unrealized loss position less than 12 months accumulated loss	(11)
Held to maturity securities continuous unrealized loss position twelve months or longer fair value	0
Held to maturity securities continuous unrealized loss position 12 months or longer accumulated loss	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value, Total	2,088
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss, Total	$ (11)
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	95	51
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 212,418	$ 612,280
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(17,737)	(13,894)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	432,353	25,412
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(67,835)	(1,121)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	644,771	637,692
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (85,572)	$ (15,015)
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	19	14
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 100,359	$ 96,372
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(14,574)	(1,257)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	17,377	761
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(3,617)	(10)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	117,736	97,133
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (18,191)	$ (1,267)
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	47	19
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 104,174	$ 64,473
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(11,233)	(1,994)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	62,360	37,063
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(13,667)	(1,667)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	166,534	101,536
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (24,900)	$ (3,661)
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	23	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 42,463	$ 7,502
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2,388)	(54)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	42,463	7,502
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (2,388)	$ (54)
Asset-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	6	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 31,404	$ 15,978
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(608)	(4)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	31,404	15,978
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (608)	$ (4)