Investment Securities (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) security $ / shares shares	Dec. 31, 2018 USD ($) security shares	Sep. 30, 2019 USD ($)
Schedule of Available-for-sale Securities
Impairment charges to securities	$ 0	$ 0
Common stock, shares outstanding | shares	2,827,473	2,814,157
Total Unrealized Loss	$ 344,000	$ 2,081,000
Total Fair Value	37,878,000	68,513,000
Proceeds from sales of available for sale securities	21,400,000	$ 0
Realized gain on sale	3,000
Percentage of income tax expense relating to net gains on sale of investment securities		27.52%
Income tax expense relating to net gains on sales of investment securities		$ 2,360,000
Interest rate swap
Schedule of Available-for-sale Securities
Investment securities pledged as collateral	$ 800,000
Maryland Financial Bank
Schedule of Available-for-sale Securities
Liquidating distributions (per share) | $ / shares	$ 0.53
Common stock, shares outstanding | shares	5,000,000
Common stock, value outstanding	$ 2,650,000	5,000
Total Unrealized Loss	$ 2,350,000	25,000	$ 25,000
U.S. Government agency securities
Schedule of Available-for-sale Securities
Number of securities continuous unrealized loss position more than twelve months | security	1
Total Unrealized Loss	$ 5,000	40,000
Total Fair Value	$ 591,000	$ 1,959,000
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Number of investment securities portfolio held | security	0	0
Number of securities continuous unrealized loss position more than twelve months | security	54
Total Unrealized Loss	$ 187,000	$ 662,000
Total Fair Value	$ 19,122,000	19,171,000
Agency mortgage-backed securities
Schedule of Available-for-sale Securities
Number of securities continuous unrealized loss position more than twelve months | security	35
Total Unrealized Loss	$ 135,000	914,000
Total Fair Value	$ 15,495,000	24,816,000
Municipal securities
Schedule of Available-for-sale Securities
Number of securities continuous unrealized loss position more than twelve months | security	7
Total Unrealized Loss	$ 17,000	454,000
Total Fair Value	$ 2,670,000	$ 21,577,000
Private Label Mortgage-Backed securities
Schedule of Available-for-sale Securities
Number of investment securities portfolio held | security	0	0