Noncontrolling Interest - Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at June 30, 2015			$ 41,728
Stock based compensation			249
Share repurchases			(117)
Net change in available-for-sale securities			(194)
Net (loss) income attributable to Astrotech Corporation	$ (2,526)	$ (2,422)	(5,890)	$ 20,861
Net loss attributable to noncontrolling interest	(82)	$ 0	(171)	$ 0
Balance at December 31, 2015	35,605		35,605
Astrotech Corp Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at June 30, 2015			41,429
Stock based compensation			249
Share repurchases			(117)
Net change in available-for-sale securities			(194)
Net (loss) income attributable to Astrotech Corporation			(5,890)
Balance at December 31, 2015	35,477		35,477
Noncontrolling Interest in Subsidiary
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at June 30, 2015			299
Net loss attributable to noncontrolling interest			(171)
Balance at December 31, 2015	$ 128		$ 128