Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenue	$ 0	$ 411	$ 41	$ 1,937
Cost of revenue	0	161	24	1,211
Gross profit	0	250	17	726
Operating expenses:
Selling, general and administrative	1,363	1,633	4,397	5,817
Research and development	1,495	1,561	4,721	4,107
Total operating expenses	2,858	3,194	9,118	9,924
Loss from operations	(2,858)	(2,944)	(9,101)	(9,198)
Interest and other income, net	3	99	103	232
Loss before income taxes	(2,855)	(2,845)	(8,998)	(8,966)
Income tax benefit	0	(2)	0	(2)
Net loss	(2,855)	(2,847)	(8,998)	(8,968)
Less: Net loss attributable to noncontrolling interest	0	(47)	0	(150)
Net loss attributable to Astrotech Corporation	$ (2,855)	$ (2,800)	$ (8,998)	$ (8,818)
Weighted average common shares outstanding:
Basic and diluted (in shares)	4,060	4,033	4,059	4,095
Basic and diluted net loss per common share:
Net loss attributable to Astrotech Corporation (in dollars per share)	$ (0.70)	$ (0.69)	$ (2.22)	$ (2.15)
Other comprehensive loss, net of tax:
Net loss attributable to Astrotech Corporation	$ (2,855)	$ (2,800)	$ (8,998)	$ (8,818)
Available-for-sale securities:
Net unrealized (loss) gain	(32)	18	(67)	(21)
Reclassification adjustment for realized loss	42	0	76	60
Total comprehensive loss	$ (2,845)	$ (2,782)	$ (8,989)	$ (8,779)