Background and Basis of Presentation (Details)	3 Months Ended
	Mar. 31, 2018 store
Entity Location [Line Items]
Number of Reportable Segments	1
City National
Entity Location [Line Items]
Number of Stores	86
WEST VIRGINIA | City National
Entity Location [Line Items]
Number of Stores	57
VIRGINIA | City National
Entity Location [Line Items]
Number of Stores	14
KENTUCKY | City National
Entity Location [Line Items]
Number of Stores	12
OHIO | City National
Entity Location [Line Items]
Number of Stores	3