Acquisitions - Narrative (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
|
Jun. 30, 2019
USD ($)
|
Sep. 30, 2019
USD ($)
|
Sep. 30, 2018
USD ($)
|
Sep. 30, 2019
USD ($)
franchise
|
Sep. 30, 2018
USD ($)
franchise
|
Dec. 31, 2018
USD ($)
store
|
|
| Business Acquisition [Line Items] | ||||||
| Additional number of businesses acquired | franchise | 8 | |||||
| Payments to acquire businesses and asset acquisitions | $ 12,873 | $ 141,079 | ||||
| Franchisee Acquisitions | ||||||
| Business Acquisition [Line Items] | ||||||
| Number of branded stores | store | 152 | |||||
| Purchase price | $ 190,167 | $ 190,167 | $ 190,200 | |||
| Revenue of acquiree since acquisition date | 43,900 | $ 26,800 | 138,700 | 32,000 | ||
| Earnings or loss of acquiree since acquisition date | $ 400 | $ (200) | $ 1,600 | $ (200) | ||
| Acquisition-related costs | $ 1,600 | |||||
| All Acquisitions Excluding SEI Acquisition | ||||||
| Business Acquisition [Line Items] | ||||||
| Additional number of businesses acquired | franchise | 6 | 5 | ||||
| Payments to acquire businesses and asset acquisitions | $ 12,900 | $ 14,100 | ||||