Net Loss per Share - Basic and Diluted Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Loss before income taxes	$ (2,238)	$ (3,006)
Income tax benefit	0	0
Net loss	$ (2,238)	$ (3,006)
Denominator:
Denominator for basic and diluted net loss per share — weighted average common stock outstanding	4,073	4,057
Basic and diluted net loss per common share:
Net loss	$ (0.55)	$ (0.74)