Represents disbursement of fund proceeds received for development and marketing.

No definition available.

Name:	astc_DisbursementOfFundForDevelopmentAndMarketing
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents funds awarded for specified purposes.

No definition available.

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

Represents value of funds awarded in first installment.

No definition available.

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

Represents funds awarded in second installment.

No definition available.

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

Represents number of installments accounted for as a contribution to equity.

No definition available.

Name:	astc_NumberOfInstallment
Namespace Prefix:	astc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents an event or criteria used as percentage of common stock sales criteria for automatic cancellation of note.

No definition available.

Name:	astc_PercentageOfCommonStockSalesCriteriaForAutomaticCancellationOfNote
Namespace Prefix:	astc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents percentage criteria for stock price establishment using qualifying Financing Event.

No definition available.

Name:	astc_PercentageOfStockPriceEstablishedInQualifyingFinancingEvent
Namespace Prefix:	astc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	astc_StateOfTexasFundingLineItems
Namespace Prefix:	astc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents denominator used for calculation of number of shares based on qualifying Financing Event.

No definition available.

Name:	astc_StockPurchaseRightDenominatorIfNoQualifyingFinancingEventHappens
Namespace Prefix:	astc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Represents per share value of stock rights issued pursuant to an agreement.

No definition available.

Name:	astc_StockPurchaseRightPerShare
Namespace Prefix:	astc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Represents stock purchase right value used for specified calculation.

No definition available.

Name:	astc_StockPurchaseRightValue
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents value of shares of common stock of specified entity available for purchase.

No definition available.

Name:	astc_ValueOfSharesOfCommonStockAvailableForPurchase
Namespace Prefix:	astc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Contractual interest rate for funds borrowed, under the debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Describes the terms of significant agreements under research and development arrangements accounted for as a contract to perform research and development for others (including royalty arrangements, purchase provisions, license agreements, and commitments to provide additional funding), aggregated by similar arrangements or individually if necessary to understand the effects on the financial statements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 730

-SubTopic 20

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23221-108380

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 730

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23199-108380