XML 73 R58.htm IDEA: XBRL DOCUMENT v3.10.0.1
Shareholders' Equity / Partners' Capital - Restricted Stock Units (Details) - Restricted stock units - shares
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Number of Restricted Stock Units    
Restricted stock units at beginning of period (in shares) 243,875 130,150
Units awarded (in shares) 304,400 174,000
Units vested (in shares) (80,025) (42,475)
Units forfeited (in shares) (48,375) (10,250)
Restricted stock units at end of the period (in shares) 419,875 251,425