Quarterly report pursuant to Section 13 or 15(d)

EQUITY AND EARNINGS PER SHARE (Outstanding Options Summary) (Details)

v3.19.3
EQUITY AND EARNINGS PER SHARE (Outstanding Options Summary) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2019
Nov. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     9,132,583   9,132,583    
Weighted average strike price (in dollars per share)     $ 3.79   $ 3.79   $ 3.72
Number of options reverted (in shares) 921,992            
Options granted (in shares)         695,652    
Held by the former Manager              
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     3,627,245   3,627,245    
Issued to the former Manager and subsequently transferred to certain of the Manager’s employees              
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     1,382,998   1,382,998    
Issued to the former Manager and subsequently transferred to certain of the Manager’s employees | February 2017              
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     1,152,495   1,152,495    
Issued to the former Manager and subsequently transferred to certain of the Manager’s employees | April 2018              
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     1,152,495   1,152,495    
Issued to the independent directors              
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     333   333    
Drive Shake employees              
Related Party Transaction [Line Items]              
Stock options outstanding (in shares)     4,122,007   4,122,007    
Stock options              
Related Party Transaction [Line Items]              
Stock-based compensation expense $ (1.2)   $ (0.1) $ 0.5 $ 2.3 $ 1.3  
Vesting period   3 years          
Stock options | Tranche One              
Related Party Transaction [Line Items]              
Options granted (in shares)   3,351,355          
Stock options | Tranche Two              
Related Party Transaction [Line Items]              
Options granted (in shares)   75,000