XML 81 R56.htm IDEA: XBRL DOCUMENT v3.7.0.1
Net Loss Per Share (Computation Of Basic And Diluted Net Loss Per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Numerator                      
Net loss $ (19,030) $ (17,494) $ (18,499) $ (19,352) $ (1,409) $ 1,821 $ (11,935) $ (20,173) $ (74,375) $ (31,696) $ (66,160)
Denominator:                      
Weighted average shares used in computation of basic and diluted net loss per share 92,660 92,110 88,148 83,604         89,148 75,614 70,475
Basic and diluted net loss per share                 $ (0.83) $ (0.42) $ (0.94)