Quarterly report pursuant to Section 13 or 15(d)

Common Stock Warrants - Additional Information (Details)

v3.8.0.1
Common Stock Warrants - Additional Information (Details) - Five Year Warrants Issued in March 2012 [Member]
1 Months Ended
Mar. 31, 2012
$ / shares
shares
Class Of Warrant Or Right [Line Items]  
Aggregate number of unregistered shares of common stock called by warrants (in shares) | shares 741,729
Exercise price of warrants (in dollars per share) | $ / shares $ 35.20
Warrants expiration period 2017-03