Basis and Summary of Significant Accounting Policies - Narrative (Details)	1 Months Ended	6 Months Ended	12 Months Ended
	Jul. 31, 2018 franchise	Jun. 30, 2018 franchise state	Dec. 31, 2017 franchise
Significant Accounting Policies [Line Items]
Number of Businesses Acquired		5	4
Progressive Leasing
Significant Accounting Policies [Line Items]
Number of states in which entity operates | state		46
Subsequent Event
Significant Accounting Policies [Line Items]
Number of Businesses Acquired	3