XML 107 R88.htm IDEA: XBRL DOCUMENT v3.10.0.1
REDEEMABLE LIMITED PARTNERS' CAPITAL - Schedule of Exchange Agreement (Details) - Class B Common Stock - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2018
Jan. 31, 2018
Oct. 31, 2017
Jul. 31, 2017
Jun. 30, 2018
Temporary Equity [Line Items]          
Number of Class B Common Units Exchanged 642,566 1,006,435 3,651,294 1,231,410 6,531,705
Reduction in Redeemable Limited Partners' Capital $ 21,197 $ 32,659 $ 119,289 $ 42,976 $ 216,121