Noncontrolling Interest - Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period			$ 28,627
Stock based compensation			954
Shares repurchases			(1,283)
Net change in available-for-sale securities			21
Net loss attributable to Astrotech Corporation	$ (2,603)	$ (2,526)	(6,018)	$ (5,890)
Net loss attributable to noncontrolling interest	(51)	$ (82)	(103)	$ (171)
Balance, end of period	22,198		22,198
Astrotech Corp Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period			28,667
Stock based compensation			954
Shares repurchases			(1,283)
Net change in available-for-sale securities			21
Net loss attributable to Astrotech Corporation			(6,018)
Balance, end of period	22,341		22,341
Noncontrolling Interest in Subsidiary
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period			(40)
Net loss attributable to noncontrolling interest			(103)
Balance, end of period	$ (143)		$ (143)