Securities - Company's Securities Gross Unrealized Losses and Fair Values, Aggregated by Length of Time Individual Securities Have Been in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Available-for-Sale Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	$ 104,964	$ 4,913
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(1,900)	(18)
Securities With Gross Unrealized Losses 12 Months or More, Fair Value	2,314
Securities With Gross Unrealized Losses 12 Months or More, Unrealized Loss	(78)
Securities With Gross Unrealized Losses, Total Fair Value	107,278	4,913
Securities With Gross Unrealized Losses, Total Unrealized Loss	(1,978)	(18)
Held-to-Maturity Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	914	1,722
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(20)	(21)
Securities With Gross Unrealized Losses, Total Fair Value	914	1,722
Securities With Gross Unrealized Losses, Total Unrealized Loss	(20)	(21)
U.S. Government Bonds
Available-for-Sale Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	2,934
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(47)
Securities With Gross Unrealized Losses, Total Fair Value	2,934
Securities With Gross Unrealized Losses, Total Unrealized Loss	(47)
Corporate Bonds
Available-for-Sale Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	15,297	1,717
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(203)	(13)
Securities With Gross Unrealized Losses, Total Fair Value	15,297	1,717
Securities With Gross Unrealized Losses, Total Unrealized Loss	(203)	(13)
FNMA Certificates
Available-for-Sale Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	70,699	3,196
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(1,231)	(5)
Securities With Gross Unrealized Losses, Total Fair Value	70,699	3,196
Securities With Gross Unrealized Losses, Total Unrealized Loss	(1,231)	(5)
Collateralized Mortgage Obligations
Available-for-Sale Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	16,034
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(419)
Securities With Gross Unrealized Losses 12 Months or More, Fair Value	2,314
Securities With Gross Unrealized Losses 12 Months or More, Unrealized Loss	(78)
Securities With Gross Unrealized Losses, Total Fair Value	18,348
Securities With Gross Unrealized Losses, Total Unrealized Loss	(497)
FHLMC Certificates
Held-to-Maturity Securities:
Securities With Gross Unrealized Losses Less Than 12 Months, Fair Value	914	1,722
Securities With Gross Unrealized Losses Less Than 12 Months, Unrealized Loss	(20)	(21)
Securities With Gross Unrealized Losses, Total Fair Value	914	1,722
Securities With Gross Unrealized Losses, Total Unrealized Loss	$ (20)	$ (21)