XML 58 R47.htm IDEA: XBRL DOCUMENT v3.8.0.1
Share-Based Compensation - Summary of Information about Restricted Stock Grants Outstanding (Details) - USD ($)
shares in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Unearned compensation $ 4,200,000  
Restricted Stock    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 0 0
Restricted Stock | October 2015    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 596  
Unearned compensation $ 315,200  
Remaining Periods (in months) 7 months  
Restricted Stock | October 2015 | Year 1    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2015 | Year 2    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2015 | Year 3    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | January/March 2016    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 63  
Unearned compensation $ 15,800  
Remaining Periods (in months) 7 months  
Restricted Stock | January/March 2016 | Year 1    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | January/March 2016 | Year 2    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | January/March 2016 | Year 3    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2016    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 411  
Unearned compensation $ 1,075,800  
Remaining Periods (in months) 19 months  
Restricted Stock | October 2016 | Year 1    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2016 | Year 2    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2016 | Year 3    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | June 2017    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 6  
Unearned compensation $ 25,300  
Remaining Periods (in months) 19 months  
Restricted Stock | June 2017 | Year 1    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | June 2017 | Year 2    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | June 2017 | Year 3    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2017    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 303  
Unearned compensation $ 2,544,500  
Remaining Periods (in months) 31 months  
Restricted Stock | October 2017 | Year 1    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2017 | Year 2    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2017 | Year 3    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Restricted stock vesting installment (as a percent) 33.33%  
Restricted Stock | October 2017    
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Shares 46  
Unearned compensation $ 262,500  
Remaining Periods (in months) 7 months