Net Loss per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Amounts attributable to Astrotech Corporation, basic and diluted:
Loss before income taxes	$ (2,845)	$ (3,850)	$ (8,966)	$ (9,909)
Income tax (expense) benefit	(2)	11	(2)	9
Net loss	(2,847)	(3,839)	(8,968)	(9,900)
Less: Net loss attributable to noncontrolling interest	(47)	(97)	(150)	(268)
Net loss attributable to Astrotech Corporation	$ (2,800)	$ (3,742)	$ (8,818)	$ (9,632)
Denominator:
Denominator for basic and diluted net loss per share attributable to Astrotech Corporation — weighted average common stock outstanding (in shares)	20,164	20,636	20,474	20,681
Basic and diluted net loss per common share:
Net loss attributable to Astrotech Corporation (in dollars per share)	$ (0.14)	$ (0.18)	$ (0.43)	$ (0.47)