Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.19.1
Stock-Based Compensation (Narrative) (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2008
Apr. 30, 2008
Dec. 31, 2018
USD ($)
installment
shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
May 10, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation cost | $     $ 1,082 $ 1,190 $ 1,421  
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Termination period from the date of grant 10 years 7 years        
Total stock option compensation expense not yet recognized | $     $ 369      
Weighted-average period for recognition of cost not yet recognized     3 years 36 days      
Stock-based compensation cost | $     $ 326 366 554  
Restricted stock and restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock option compensation expense not yet recognized | $     $ 582      
Weighted-average period for recognition of cost not yet recognized     2 years 182 days      
Stock-based compensation cost | $     $ 566 $ 765 $ 867  
Nonvested restricted stock or performance stock units granted during year     279,000 213,000 120,000  
Performance stock units forfeited during year     (3,000) (39,000) (29,000)  
Performance shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation cost | $     $ 190 $ 59 $ 0  
Nonvested restricted stock or performance stock units granted during year     169,000 166,000    
Performance stock units forfeited during year     (45,000) (26,000)    
2007 Stock Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized           3,230,320
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant     527,988      
Newly Hired Executive Officers | Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number     100,000      
Share-Based Compensation Arrangement By Share Based Payment Award Number Of Vesting Installments | installment     4      
Vesting period     4 years      
Termination period from the date of grant     7 years