XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Investments - Carrying Value (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Jun. 30, 2017
--- | --- | ---
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Available-for-sale securities, current | $ 8,533 | $ 12,890
Held-to-maturity securities, maturities from 91-360 days | 251 | 250
Held-to-maturity securities, maturities less than 1 year | 1,627 | 1,607
Held-to-maturity securities, maturities over 360 days | 546 | 549
Held-to-maturity securities, remaining maturities from 1-3 years | 709 | 1,441
Short-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Total available-for-sale and held-to-maturity securities | 7,278 | 10,900
Long-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities | 1,255 | 1,990
Mutual Funds - Corporate & Government Debt |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Available-for-sale securities, current | 5,400 | 9,043
Mutual Funds - Corporate & Government Debt | Short-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Available-for-sale securities, current | 5,400 | 9,043
Mutual Funds - Corporate & Government Debt | Long-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Available-for-sale securities, current | 0 | 0
Time Deposits |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Available-for-sale securities, current | 797 | 799
Time Deposits | Short-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, maturities from 1-90 days | 0 | 0
Held-to-maturity securities, maturities from 91-360 days | 251 | 250
Held-to-maturity securities, maturities over 360 days | 0 | 0
Time Deposits | Long-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, maturities from 1-90 days | 0 | 0
Held-to-maturity securities, maturities from 91-360 days | 0 | 0
Held-to-maturity securities, maturities over 360 days | 546 | 549
Fixed Income Bonds |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Available-for-sale securities, current | 2,336 | 3,048
Fixed Income Bonds | Short-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, maturities less than 1 year | 1,627 | 1,607
Held-to-maturity securities, remaining maturities from 1-3 years | 0 | 0
Held-to-maturity Securities, Debt Maturities, after Three Through Five Years, Net Carrying Amount | 0 | 0
Fixed Income Bonds | Long-Term Investments |  |
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] |  |
Held-to-maturity securities, maturities less than 1 year | 0 | 0
Held-to-maturity securities, remaining maturities from 1-3 years | 709 | 1,441
Held-to-maturity Securities, Debt Maturities, after Three Through Five Years, Net Carrying Amount | $ 0 | $ 0

X
- Definition Held-To-Maturity Securities, Debt Maturities, 1 To 90 Days, Net Carrying Amount + References No definition available. + Details
Name: | astc_HeldToMaturitySecuritiesDebtMaturities1To90DaysNetCarryingAmount
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Held-To-Maturity Securities, Debt Maturities, 91 To 360 Days, Net Carrying Amount + References No definition available. + Details
Name: | astc_HeldToMaturitySecuritiesDebtMaturities91To360DaysNetCarryingAmount
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Held-To-Maturity Securities, Debt Maturities, Over 360 Days, Net Carrying Amount + References No definition available. + Details
Name: | astc_HeldToMaturitySecuritiesDebtMaturitiesOver360DaysNetCarryingAmount
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Held-to-maturity Securities, Debt Maturities, after One Through Three Years, Net Carrying Amount + References No definition available. + Details
Name: | astc_HeldtomaturitySecuritiesDebtMaturitiesafterOneThroughThreeYearsNetCarryingAmount
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Held-to-maturity Securities, Debt Maturities, after Three Through Five Years, Net Carrying Amount + References No definition available. + Details
Name: | astc_HeldtomaturitySecuritiesDebtMaturitiesafterThreeThroughFiveYearsNetCarryingAmount
Namespace Prefix: | astc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of debt and equity financial instruments classified as either held-to-maturity or available-for-sale. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAndHeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.6) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_HeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803 + Details
Name: | us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfHeldToMaturitySecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=astc_LongTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=astc_MutualFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_BankTimeDepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FixedIncomeInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |