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Net Loss per Share - Calculation of Basic and Diluted Net Loss per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Basic and Diluted:        
Net loss $ (7,850) $ (6,458) $ (11,419) $ (12,822)
Basic and Diluted:        
Weighted-average shares of common stock used in computing basic and diluted net loss per share 45,731 45,127 45,700 44,982
Net loss per share:        
Basic and Diluted [1] $ (0.17) $ (0.14) $ (0.25) $ (0.29)
Securities excluded from weighted-average shares used in computing diluted net loss per share because the effect would have been anti-dilutive: [2] 7,040 5,207 7,075 5,328
[1] Diluted net loss per share does not reflect any potential common stock relating to stock options or restricted stock units due to net losses incurred for the three and six months ended December 31, 2016 and 2015. The assumed issuance of any additional shares would be anti-dilutive.
[2] These weighted-shares relate to anti-dilutive stock options and restricted stock units as calculated using the treasury stock method and could be dilutive in the future.