XML 72 R61.htm IDEA: XBRL DOCUMENT v3.7.0.1
Equity-Based Compensation - SARs and Stock Options Fair Value Assumptions (Detail) - shares
 3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
SARs    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of shares granted (in shares)   25,000
Employees    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of stock options granted (in shares) 0 0
Employees | SARs    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of shares granted (in shares) 0 0