XML 48 R36.htm IDEA: XBRL DOCUMENT v3.19.1
Equity Compensation Plans - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Mar. 07, 2019
Feb. 06, 2019
May 31, 2016
Mar. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock, shares authorized     4,300,000 300,000,000 300,000,000
Expiration date of Incentive Plan       May 12, 2026  
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards vesting period 4 years 3 years      
Weighted average fair value, granted $ 10.23        
Grant date fair value $ 900        
Restricted Stock | Non Executive Officer Employees          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued   92,925      
Weighted average fair value, granted   $ 10.35      
Grant date fair value   $ 962      
Restricted Stock Awards And Performance Share Units | Executive Officers          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued 87,975        
Performance Share Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards vesting period 3 years        
Shares issued 263,929        
Grant date fair value $ 2,203        
Minimum | Performance Share Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting rights (percentage) 0.00%        
Maximum | Performance Share Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting rights (percentage) 150.00%        
Long Term Incentive Plan | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards vesting period     3 years    
Long Term Incentive Plan | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards vesting period     4 years