Noncontrolling Interest - Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance			$ 41,728
Stock based compensation			422
Exercise of stock options			16
Shares repurchases			(117)
Net change in available-for-sale securities			(166)
Net (loss) income	$ (3,742)	$ (2,100)	(9,632)	$ 18,761
Net loss attributable to noncontrolling interest	(97)	$ (11)	(268)	$ (11)
Balance	31,983		31,983
Astrotech Corp Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance			41,429
Stock based compensation			422
Exercise of stock options			16
Shares repurchases			(117)
Net change in available-for-sale securities			(166)
Net (loss) income			(9,632)
Balance	31,952		31,952
Noncontrolling Interest in Subsidiary
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance			299
Net loss attributable to noncontrolling interest			(268)
Balance	$ 31		$ 31