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Stockholders' Equity -ESPP (Details) - Employee Stock Purchase Plan 2015
1 Months Ended
Sep. 30, 2015
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common stock reserved for issuance (in shares) 1,000,000
Award purchase period 6 months
Discount from Market Price, Purchase Date 15.00%