Basis of Presentation and Nature of Operations (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) item	Jan. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operation centers	2
Number of LPOs	5
Right-of-use assets | $	$ 10,044
Total lease liability | $	$ 10,080
Restatement Adjustment | ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets | $		$ 10,200
Total lease liability | $		$ 10,200
Maryland and Virginia
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of branches	12
Waldrof
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of branches	2
Leonardtown, La Plata
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of branches	2