Employee Benefit Plans	12 Months Ended
Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	(13) Employee Benefit Plans Astrotech has a defined contribution retirement plan, which covers substantially all employees and officers. For the year ended June 30, 2019, the Company contributed the required match of $0.2 million to the plan. Effective July 1, 2019, the Company elected to no longer match employees’ contributions to the plan. The Company has the right, but not an obligation, to make additional contributions to the plan in future years at the discretion of the Company’s Board of Directors. The Company has not made any additional contributions for the years ended June 30, 2020 and 2019.

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 712
-URI http://asc.fasb.org/topic&trid=2197446

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-URI http://asc.fasb.org/topic&trid=2127225

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Name:	us-gaap_CompensationAndEmployeeBenefitPlansTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration