Net Loss Per Common Share - Schedule of reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per common share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net loss used to compute basic and diluted loss per share	$ (8,852)	$ (5,029)	$ (22,953)	$ (24,324)
Weighted average common shares used in computing net loss per share:
Weighted average shares used to compute basic and diluted loss per share	85,459	82,913	84,594	82,268