Securities - Unrealized Loss on Available for Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	$ 307,285	$ 112,856
12 Months or More, Estimated Fair Value	87,921	95,436
Total, Estimated Fair Value	395,206	208,292
Less Than 12 Months, Unrealized Loss	(2,870)	(1,829)
12 Months or More, Unrealized Loss	(2,867)	(2,299)
Total, Unrealized Loss	(5,737)	(4,128)
U.S. government sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	54,562	71,825
12 Months or More, Estimated Fair Value	25,526	14,472
Total, Estimated Fair Value	80,088	86,297
Less Than 12 Months, Unrealized Loss	(1,434)	(661)
12 Months or More, Unrealized Loss	(1,004)	(346)
Total, Unrealized Loss	(2,438)	(1,007)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	52,672	31,777
12 Months or More, Estimated Fair Value	10,286	0
Total, Estimated Fair Value	62,958	31,777
Less Than 12 Months, Unrealized Loss	(259)	(1,106)
12 Months or More, Unrealized Loss	(670)	0
Total, Unrealized Loss	(929)	(1,106)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	200,051	9,254
12 Months or More, Estimated Fair Value	52,109	80,964
Total, Estimated Fair Value	252,160	90,218
Less Than 12 Months, Unrealized Loss	(1,177)	(62)
12 Months or More, Unrealized Loss	(1,193)	(1,953)
Total, Unrealized Loss	$ (2,370)	$ (2,015)