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ACCOUNTS RECEIVABLE - Narrative (Details) - JPMorgan Chase Bank - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Sep. 29, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Aggregate amount |  | $ 30,000,000
Aggregate amount outstanding | $ 0 |

X
- Definition Receivable Purchase Agreement, Amount Sold + References No definition available. + Details
Name: | hlit_ReceivablePurchaseAgreementAmountSold
Namespace Prefix: | hlit_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Receivable Purchase Agreement, Maximum Amount + References No definition available. + Details
Name: | hlit_ReceivablePurchaseAgreementMaximumAmount
Namespace Prefix: | hlit_
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_CounterpartyNameAxis=hlit_JPMorganChaseBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |