XML 78 R67.htm IDEA: XBRL DOCUMENT v3.19.2
STOCK-BASED COMPENSATION - Restricted Stock - Additional Information (Detail) - Omnibus Plan [Member] - Restricted Stock [Member] - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted shares of restricted stock     266,116  
Share based compensation cost $ 0.7 $ 0.8 $ 1.6 $ 1.9
Stock based compensation expense unrecognized related to nonvested shares of restricted stock $ 3.5   $ 3.5  
Period for cost recognition not yet recognized     1 year 10 months 24 days  
Director [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted shares of restricted stock     3,745  
Restricted stock vesting period     1 year  
Management [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted shares of restricted stock     262,371 342,439
Retirement Eligible Shares     13,308 20,447
Restricted stock vesting after two-year anniversary of the grant date [Member] | Management [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting percentage     50.00% 50.00%
Restricted stock vesting after three-year anniversary of the grant date [Member] | Management [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock vesting percentage     50.00% 50.00%