Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 01, 2017 USD ($) shares	Dec. 31, 2017 USD ($) ReportingUnit $ / shares	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Value of shares issued in acquisition		$ 775
Goodwill		1,099	$ 334
Certificates of Deposit Held for Investment [Abstract]
Deposit limit with other financial institutions		$ 250
Loans Receivable [Abstract]
Maximum percentage of lending of appraised value of property		80.00%
Restricted Stock Investments [Abstract]
FHLB stock (in dollars per share) | $ / shares		$ 100
Goodwill and Other Intangible Assets [Abstract]
Number of reporting units | ReportingUnit		1
Advertising Costs [Abstract]
Advertising expenses		$ 788	703
Mid-Maryland Title Company [Member]
Business Acquisition [Line Items]
Stock issued in a business combination (in shares) | shares	108,084
Value of shares issued in acquisition	$ 775
Goodwill	$ 765	$ 765	$ 0