Basis and Summary of Significant Accounting Policies - Narrative (Details) |
Sep. 30, 2017
state
|
May 13, 2016
Store
|
|---|---|---|
| Disposal Group, Held-for-sale, Not Discontinued Operations | HomeSmart | ||
| Significant Accounting Policies [Line Items] | ||
| Disposal group, number of stores | Store | 82 | |
| Progressive Leasing | ||
| Significant Accounting Policies [Line Items] | ||
| Number of states in which entity operates | state | 46 |