XML 101 R71.htm IDEA: XBRL DOCUMENT
v3.21.2

Concentrations of Risk (Details) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2021 HKD ($) | Jun. 30, 2020 USD ($)
Concentrations of Risk (Details) [Line Items] |  |  |
Deposited from banks | $ 0 |  | $ 500,000
Insurance coverage of each bank | $ 250,000 | $ 500,000 |
Vendor concentration risk percentage | 89.00% | 89.00% |
Hong Kong [Member] |  |  |
Concentrations of Risk (Details) [Line Items] |  |  |
Insurance coverage of each bank | $ 64,000 |  |

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References No definition available. + Details
Name: | hht_ConcentrationRiskPercentage
Namespace Prefix: | hht_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | hht_ConcentrationsofRiskDetailsLineItems
Namespace Prefix: | hht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of insurance coverage of each bank. + References No definition available. + Details
Name: | hht_InsuranceCoverageOfBank
Namespace Prefix: | hht_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A bank's noninterest bearing demand deposits in other banks (such as correspondents). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.1) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_DueFromBanks
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_StatementGeographicalAxis=country_HK
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |