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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 6 Months Ended
Sep. 06, 2013
May. 31, 2015
Sep. 30, 2015
Aug. 29, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost related to unvested stock options     $ 6.4  
Weighted average recognition period     3 years 2 months 12 days  
Employees [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross   465,633    
Granted, Weighted Average Exercise Price   $ 7.80    
Board of Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross   20,835    
Granted, Weighted Average Exercise Price   $ 7.80    
Warrant [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Intrinsic value per share     $ 2.36  
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross     2,512,179  
Granted, Weighted Average Exercise Price     $ 3.93  
Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Estimated forfeiture rate     0.00%  
Intrinsic value per share     $ 2.36  
Stock Issued During Period, Shares, New Issues   355,001    
Plan 2009 [Member] | Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total shares available for future grant     25,312  
Plan 2011 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Additional shares authorized 591,667      
Plan 2011 [Member] | Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total shares available for future grant     30,140 125,000