Annual report pursuant to Section 13 and 15(d)

Share-Based Awards and Cash-Based Awards - Schedule of Restricted Stock Awards Outstanding (Details)

v3.6.0.2
Share-Based Awards and Cash-Based Awards - Schedule of Restricted Stock Awards Outstanding (Details) - Restricted Shares - shares
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Awards expected to vest by period 161,296 78,230 43,210 43,840
2017        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Awards expected to vest by period 62,136      
2018        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Awards expected to vest by period 57,120      
2019        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Awards expected to vest by period 42,040