XML 67 R53.htm IDEA: XBRL DOCUMENT
v3.24.2

Summary of Significant Accounting Policies (Details) - Schedule of Exchange Rates $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($)
Consolidated statement of operations [Member] | Chinese Renminbi [Member] |  |  |
Summary of Significant Accounting Policies (Details) - Schedule of Exchange Rates [Line Items] |  |  |
Currency exchange value | 7.15 | 6.83 | 6.44
Consolidated statement of operations [Member] | Myanmar Kyat [Member] |  |  |
Summary of Significant Accounting Policies (Details) - Schedule of Exchange Rates [Line Items] |  |  |
Currency exchange value | $ 2,103 | $ 1,995 | $ 1,729
Balance sheet [Member] | Chinese Renminbi [Member] |  |  |
Summary of Significant Accounting Policies (Details) - Schedule of Exchange Rates [Line Items] |  |  |
Currency exchange value | 7.27 | 6.86 |
Balance sheet [Member] | Myanmar Kyat [Member] |  |  |
Summary of Significant Accounting Policies (Details) - Schedule of Exchange Rates [Line Items] |  |  |
Currency exchange value | $ 2,103 | $ 2,103 |

X
- Definition Currency exchange value. + References No definition available. + Details
Name: | hiho_CurrencyExchangeValue
Namespace Prefix: | hiho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479424/830-30-S99-1 + Details
Name: | us-gaap_ForeignCurrencyExchangeRateTranslation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=hiho_ConsolidatedStatementOfOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=hiho_BalanceSheetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |