Acquisition of The Scottdale Bank and Trust Company (Pro Forma Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Net interest income after loan loss provision	$ 17,181	$ 10,753
Noninterest income	2,049	1,647
Noninterest expense	$ 14,303	11,183
Scottdale Bank and Trust Company [Member]
Business Acquisition [Line Items]
Net interest income after loan loss provision		10,753
Noninterest income		1,647
Noninterest expense		9,910
Net income		$ 2,054
Net income per common share		$ 0.34