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			6 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net loss used to compute basic and diluted loss per share	$ (4,640)	$ (9,206)	$ (4,719)	$ (13,846)	$ (14,101)
Weighted average common shares used in computing net loss per share:
Weighted average shares used to compute basic and diluted loss per share	87,237		84,586	86,858	84,167