Related Party Transactions - (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 24, 2017 USD ($) franchise	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	May 13, 2016 Store	Aug. 12, 2015
Related Party Transaction [Line Items]
Proceeds from disposition of business, net of cash acquired		$ 35,899	$ 13,976	$ 16,525
HomeSmart | Disposal Group, Held-for-sale, Not Discontinued Operations
Related Party Transaction [Line Items]
Disposal group, number of stores | Store					82
Vintage
Related Party Transaction [Line Items]
Investment ownership percentage						10.00%
Buddy's | Subsequent Event
Related Party Transaction [Line Items]
Number of business acquired | franchise	5
Finite-lived contractual rights, gross	$ 600
Monthly lease payment	$ 40