Related Party Transactions and Arrangements - Related Party Notes Receivable (Details) - Affiliated Entity - Master Trust 2014 Series 2017-1 - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
|
| Related Party Transaction [Line Items] | ||
| Percentage of economic interest | 5.00% | |
| Notes receivable from related parties | $ 33.5 | $ 33.5 |
| Interest income earned from related parties note | $ 0.4 | |
| Weighted average stated interest rate of loans receivable | 4.58% | |
| Remaining term of loans receivable | 3 years 8 months |