Securities - Schedule of Available for Sale Securities with Unrealized Losses (Details) $ in Thousands	Jun. 30, 2023 USD ($) contract	Dec. 31, 2022 USD ($) contract
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	193	397
Less than 12 months, estimated fair value	$ 195,156	$ 592,593
Less than 12 months, unrealized loss	$ (10,047)	$ (40,967)
12 months or more, number of securities | contract	432	226
12 months or more, estimated fair value	$ 766,940	$ 409,844
12 months or more, unrealized loss	(110,174)	(72,014)
Total, estimated fair value	962,096	1,002,437
Total, unrealized loss	$ (120,221)	$ (112,981)
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	112	250
Less than 12 months, estimated fair value	$ 109,915	$ 292,595
Less than 12 months, unrealized loss	$ (6,217)	$ (22,315)
12 months or more, number of securities | contract	244	108
12 months or more, estimated fair value	$ 259,471	$ 96,986
12 months or more, unrealized loss	(37,058)	(21,351)
Total, estimated fair value	369,386	389,581
Total, unrealized loss	$ (43,275)	$ (43,666)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	13	50
Less than 12 months, estimated fair value	$ 46,549	$ 203,516
Less than 12 months, unrealized loss	$ (3,374)	$ (13,374)
12 months or more, number of securities | contract	46	14
12 months or more, estimated fair value	$ 200,796	$ 72,190
12 months or more, unrealized loss	(30,796)	(12,825)
Total, estimated fair value	247,345	275,706
Total, unrealized loss	$ (34,170)	$ (26,199)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	65	92
Less than 12 months, estimated fair value	$ 34,035	$ 88,056
Less than 12 months, unrealized loss	$ (401)	$ (4,976)
12 months or more, number of securities | contract	139	104
12 months or more, estimated fair value	$ 300,883	$ 240,668
12 months or more, unrealized loss	(42,137)	(37,838)
Total, estimated fair value	334,918	328,724
Total, unrealized loss	$ (42,538)	$ (42,814)
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	1	3
Less than 12 months, estimated fair value	$ 733	$ 1,656
Less than 12 months, unrealized loss	$ (26)	$ (75)
12 months or more, number of securities | contract	2	0
12 months or more, estimated fair value	$ 940	$ 0
12 months or more, unrealized loss	(33)	0
Total, estimated fair value	1,673	1,656
Total, unrealized loss	$ (59)	$ (75)
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	2	1
Less than 12 months, estimated fair value	$ 3,924	$ 1,996
Less than 12 months, unrealized loss	$ (29)	$ (1)
12 months or more, number of securities | contract	0	0
12 months or more, estimated fair value	$ 0	$ 0
12 months or more, unrealized loss	0	0
Total, estimated fair value	3,924	1,996
Total, unrealized loss	$ (29)	$ (1)
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	0	1
Less than 12 months, estimated fair value	$ 0	$ 4,774
Less than 12 months, unrealized loss	$ 0	$ (226)
12 months or more, number of securities | contract	1	0
12 months or more, estimated fair value	$ 4,850	$ 0
12 months or more, unrealized loss	(150)	0
Total, estimated fair value	4,850	4,774
Total, unrealized loss	$ (150)	$ (226)