Securities - Unrealized Loss on Available for Sale Securities (Details) $ in Thousands	Dec. 31, 2022 USD ($) contract	Dec. 31, 2021 USD ($) contract
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	397,000	72,000
Less Than 12 Months, Estimated Fair Value	$ 592,593	$ 307,285
Less Than 12 Months, Unrealized Loss	$ (40,967)	$ (2,870)
12 Months or More, Number of Securities | contract	226,000	131,000
12 Months or More, Estimated Fair Value	$ 409,844	$ 87,921
12 Months or More, Unrealized Loss	(72,014)	(2,867)
Total, Estimated Fair Value	1,002,437	395,206
Total, Unrealized Loss	$ (112,981)	$ (5,737)
U.S. government sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	250,000	29
Less Than 12 Months, Estimated Fair Value	$ 292,595	$ 54,562
Less Than 12 Months, Unrealized Loss	$ (22,315)	$ (1,434)
12 Months or More, Number of Securities | contract	108,000	59,000
12 Months or More, Estimated Fair Value	$ 96,986	$ 25,526
12 Months or More, Unrealized Loss	(21,351)	(1,004)
Total, Estimated Fair Value	389,581	80,088
Total, Unrealized Loss	$ (43,666)	$ (2,438)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	50,000	8,000
Less Than 12 Months, Estimated Fair Value	$ 203,516	$ 52,672
Less Than 12 Months, Unrealized Loss	$ (13,374)	$ (259)
12 Months or More, Number of Securities | contract	14,000	3,000
12 Months or More, Estimated Fair Value	$ 72,190	$ 10,286
12 Months or More, Unrealized Loss	(12,825)	(670)
Total, Estimated Fair Value	275,706	62,958
Total, Unrealized Loss	$ (26,199)	$ (929)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	92,000	35,000
Less Than 12 Months, Estimated Fair Value	$ 88,056	$ 200,051
Less Than 12 Months, Unrealized Loss	$ (4,976)	$ (1,177)
12 Months or More, Number of Securities | contract	104,000	69,000
12 Months or More, Estimated Fair Value	$ 240,668	$ 52,109
12 Months or More, Unrealized Loss	(37,838)	(1,193)
Total, Estimated Fair Value	328,724	252,160
Total, Unrealized Loss	$ (42,814)	$ (2,370)
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	3,000
Less Than 12 Months, Estimated Fair Value	$ 1,656
Less Than 12 Months, Unrealized Loss	$ (75)
12 Months or More, Number of Securities | contract	0
12 Months or More, Estimated Fair Value	$ 0
12 Months or More, Unrealized Loss	0
Total, Estimated Fair Value	1,656
Total, Unrealized Loss	$ (75)
Collateralized Loan Obligations
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	1,000
Less Than 12 Months, Estimated Fair Value	$ 4,774
Less Than 12 Months, Unrealized Loss	$ (226)
12 Months or More, Number of Securities | contract	0
12 Months or More, Estimated Fair Value	$ 0
12 Months or More, Unrealized Loss	0
Total, Estimated Fair Value	4,774
Total, Unrealized Loss	$ (226)
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	1,000
Less Than 12 Months, Estimated Fair Value	$ 1,996
Less Than 12 Months, Unrealized Loss	$ (1)
12 Months or More, Number of Securities | contract	0
12 Months or More, Estimated Fair Value	$ 0
12 Months or More, Unrealized Loss	0
Total, Estimated Fair Value	1,996
Total, Unrealized Loss	$ (1)