Discontinued Operations & Gain on the Sale of the ASO Business Unit (Details) - Astrotech Space Operations - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Aug. 31, 2014	Jun. 30, 2017	Feb. 25, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of business unit	$ 61.0	$ 59.3
Working capital		1.7
Indemnity holdback		$ 6.1
Indemnity holdback released, percent			100.00%