Cash inflows from sale of discontinued operations.

No definition available.

Name:	astc_DiscontinuedOperationProceedsFromSaleOfBusiness
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents aggregate amount of the major classifications and carrying amounts of total assets sold, or to be sold, as part of the disposal group, including a component of the entity (discontinued operation).

+ References

No definition available.

+ Details

Name:	astc_DisposalGroupIncludingDiscontinuedNetBookValueOfAssetsSold
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount classified as other elements attributable to disposal group held for sale or disposed of.

+ References

No definition available.

+ Details

Name:	astc_DisposalGroupIncludingDiscontinuedOperationOther
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents amount indemnity holdback classified as current.

+ References

No definition available.

+ Details

Name:	astc_IndemnnityHoldbackCurrent
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount classified as liabilities attributable to disposal group held for sale or disposed of.

+ References

No definition available.

+ Details

Name:	astc_LiabilitiesAssumedOfDisposalGroupIncludingDiscontinuedOperation
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

Name:	us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=astc_AstrotechSpaceOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Discontinued Operations & Gain on the Sale of the ASO Business Unit (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Receivable for indemnity holdback	$ 6,100astc_IndemnnityHoldbackCurrent		$ 6,100astc_IndemnnityHoldbackCurrent		$ 0astc_IndemnnityHoldbackCurrent
Astrotech Space Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from the sale of the ASO business			53,189
Receivable for indemnity holdback	6,100		6,100
Liabilities assumed by the Buyer	2,478		2,478
Net book value of assets sold	36,175		36,175
Other	38		38
Gain on sale of our former ASO business	$ 0	$ 0	$ 25,630	$ 0