Parent Company Financial Information (Schedule of Condensed Statements of Financial Condition) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Balance Sheet Statements, Captions [Line Items]
Other assets	$ 2,742	$ 2,333
Total assets	1,081,915	1,070,685
Junior subordinated debentures	9,279	9,279
Subordinated debt	9,750	9,750
Other liabilities	5,413	3,456
Total liabilities	979,973	975,845
Stockholders' equity	101,942	94,840	$ 55,488
Total liabilities and stockholders' equity	1,081,915	1,070,685
Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash	114	1,354
Investment in subsidiary	120,530	112,150
Other assets	457	484
Total assets	121,101	113,988
Junior subordinated debentures	9,279	9,279
Subordinated debt	9,750	9,750
Other liabilities	130	119
Total liabilities	19,159	19,148
Stockholders' equity	101,942	94,840
Total liabilities and stockholders' equity	$ 121,101	$ 113,988