XML 41 R27.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stock-Based Compensation (Narrative) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
May 31, 2017
Jun. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation expense $ 504 $ 486      
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grant of restricted common stock (shares) 88,000 83,000      
Restricted Stock | First anniversary of grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage of awards 33.00%        
Restricted Stock | Second anniversary of grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage of awards 33.00%        
Restricted Stock | Third anniversary of grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage of awards 33.00%        
Stock Options and Stock Appreciation Rights (SARs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Payment award, expiration period 10 years        
SOSARs granted in period (shares) 0   0    
Stock Options and Stock Appreciation Rights (SARs) | First anniversary of grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage of awards 33.00%        
Stock Options and Stock Appreciation Rights (SARs) | Second anniversary of grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage of awards 33.00%        
Stock Options and Stock Appreciation Rights (SARs) | Third anniversary of grant date          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage of awards 33.00%        
2005 Long Term Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares reserved for future issuance (shares) 700,000        
Expiration period 10 years        
2008 Stock Purchase Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Percentage of quoted market price offering rate 85.00%        
Restriction period 2 years        
Shares authorized under the plan (shares)   350,000     150,000
2010 Long Term Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares reserved for future issuance (shares) 680,000     380,000