Related Party Transactions - Redemption Rights (Details) - shares |
1 Months Ended | 12 Months Ended |
---|---|---|
Feb. 28, 2017 |
Dec. 31, 2018 |
|
Related Party Transaction [Line Items] | ||
Redemption ratio, number of shares of Class A Common stock for each Ranger unit redeemed | 1 | |
Ranger Bridge Loan | ||
Related Party Transaction [Line Items] | ||
Period after the consummation of an initial public offering that the debt may become due | 10 days |