Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances	$ 183,185	$ 163,736
Other comprehensive income	1,446	(2,069)
Balances	187,082	164,977
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances	(2,950)	(1,309)
Other comprehensive income	1,446	(2,069)
Balances	(1,504)	(3,378)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances	(2,918)	(1,255)
Other comprehensive income	1,442	(2,073)
Balances	(1,476)	(3,328)
Unrealized Gains Losses On Securities Transferred From Available For Sale To Held To Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances	(32)	(54)
Other comprehensive income, transferred from Available for sale to Held to maturity	4	4
Balances	$ (28)	$ (50)