Net Loss per Share - Schedule of Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net loss attributable to Astrotech Corporation	$ (11,582)	$ (13,095)
Denominator:
Denominator for basic and diluted net loss per share attributable to Astrotech Corporation — weighted average common stock outstanding (in shares)	20,418	20,388
Basic and diluted net loss per common share:
Net loss attributable to Astrotech Corporation (in dollars per share)	$ (0.57)	$ (0.64)