XML 78 R67.htm IDEA: XBRL DOCUMENT v3.19.1
Employee Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
2005 Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for issuance (in shares) 1,400,000    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation $ 1.3 $ 1.5  
Performance Share Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation $ 1.3 1.0  
Share-based award liability     $ 11.1
Vesting period 3 years    
Fixed Value Cash Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Long-term incentive cash awards granted $ 5.2   $ 4.5
Vesting period 3 years    
Compensation expense $ 0.8 $ 0.4  
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for issuance (in shares) 500,000    
Shares authorized for issuance (in shares) 1,500,000    
Purchase limit per employee (in shares) 130