Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - 2015 Inducement Plan (Details)

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Stock-based Compensation - 2015 Inducement Plan (Details) - 2015 Inducement Plan [Member] - shares
3 Months Ended
Jun. 30, 2015
Mar. 26, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized under the plan   450,000  
Options granted in period (shares) 125,000    
Possible future issuance under equity compensation plan (shares) 325,000   0