Securities - Held to Maturity Securities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Estimated Fair Value
Less Than 12 Months	$ 83,706,000
12 Months or More	0
Total	83,706,000
Unrealized Loss
Less Than 12 Months	(741,000)
12 Months or More	0
Total	(741,000)	$ 0
U.S. government agency debt securities
Estimated Fair Value
Less Than 12 Months	61,037,000
12 Months or More	0
Total	61,037,000
Unrealized Loss
Less Than 12 Months	(363,000)
12 Months or More	0
Total	(363,000)
U.S. government sponsored enterprise debt securities
Estimated Fair Value
Less Than 12 Months	22,669,000
12 Months or More	0
Total	22,669,000
Unrealized Loss
Less Than 12 Months	(378,000)
12 Months or More	0
Total	$ (378,000)