Segment Information - Summary of Segment long-lived and Total Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Asset Reconciling Item [Line Items]
Total long-lived assets	$ 227,561	$ 242,743
Total assets	358,327	352,823
Real Estate Franchise Services
Segment Reporting Asset Reconciling Item [Line Items]
Total long-lived assets	222,888	238,147
Total assets	349,481	344,402
Brokerages
Segment Reporting Asset Reconciling Item [Line Items]
Total long-lived assets	4,673	4,596
Total assets	$ 8,846	$ 8,421