XML 60 R32.htm IDEA: XBRL DOCUMENT v3.3.1.900
Summary of Significant Accounting Policies - Net Loss Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Numerator:                      
Net loss                 $ (118,183) $ (79,159) $ (56,073)
Denominator:                      
Weighted average common shares used in calculation of basic net loss per share:                 58,633 43,095 34,980
Effect of dilutive securities:                      
Weighted average common shares outstanding used in calculation of diluted net loss per share                 58,633 43,095 34,980
Net loss per share:                      
Basic and Diluted (in dollars per share) $ (0.51) $ (0.50) $ (0.47) $ (0.55) $ (0.36) $ (0.54) $ (0.59) $ (0.36) $ (2.02) $ (1.84) $ (1.60)