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Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 51 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grants during the period (shares) 127,560      
Total share based compensation cost $ 1,428   $ 1,428  
Compensation expense recognized 83 $ 49    
Share-based compensation expense not yet recognized $ 911 $ 706 $ 911  
Plan 2010        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Capital shares reserved for future issuance (shares)       400,000
Plan 2010 | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Grants during the period (shares)     71,086