Securities - Schedule of Securities With Unrealized Losses Aggregated by Length of Time in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Fair Value, Less Than 12 Months	$ 16,682	$ 8,878
Unrealized Losses, Less Than 12 Months	(57)	(29)
Fair Value, 12 Months or Longer		8,911
Unrealized Losses, 12 Months or Longer		(43)
Total Fair Value	16,682	17,789
Total Unrealized Losses	(57)	(72)
Mortgage-backed Securities, Residential
Schedule Of Available For Sale Securities [Line Items]
Fair Value, Less Than 12 Months	3,089
Unrealized Losses, Less Than 12 Months	(7)
Fair Value, 12 Months or Longer		3,254
Unrealized Losses, 12 Months or Longer		(12)
Total Fair Value	3,089	3,254
Total Unrealized Losses	(7)	(12)
Collateralized Mortgage Obligations, Residential
Schedule Of Available For Sale Securities [Line Items]
Fair Value, Less Than 12 Months	13,593	8,878
Unrealized Losses, Less Than 12 Months	(50)	(29)
Fair Value, 12 Months or Longer		3,658
Unrealized Losses, 12 Months or Longer		(30)
Total Fair Value	13,593	12,536
Total Unrealized Losses	$ (50)	(59)
U.S. Government Sponsored Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Fair Value, 12 Months or Longer		1,999
Unrealized Losses, 12 Months or Longer		(1)
Total Fair Value		1,999
Total Unrealized Losses		$ (1)