XML 63 R53.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock Compensation (Narrative) (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Employees purchased common stock, shares 47 52 93 90  
Capitalized stock compensation expense $ 111 $ 70 $ 288 $ 202  
ESPP Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
ESPP, percentage of market price for eligible employees     85.00%    
RSAs, RSUs, And PSUs [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Authorized awards from approved stock incentive plans     384 478  
Aggregate grant date market value     $ 6,300 $ 5,300  
Unrecognized compensation costs 6,800   6,800    
Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation costs $ 2,100   $ 2,100    
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     1 year 8 months 12 days    
Restricted Stock Awards (RSAs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     1 year 3 months 18 days    
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     2 years 1 month 6 days    
Performance Stock Units (PSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of target number of shares of common stock granted as Performance Stock Units         142.00%
Expected weighted-average period for recognizing the unrecognized compensation costs, in years     1 year    
Minimum [Member] | Performance Stock Units (PSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of target number of shares of common stock granted as Performance Stock Units     60.00% 60.00%  
Maximum [Member] | Performance Stock Units (PSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of target number of shares of common stock granted as Performance Stock Units     150.00% 150.00%  
Officers [Member] | Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grants of stock options     260 387