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Note 8 - Receivables - Other, Net - Summary of Receivables - Other, Net (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Accounts Receivables, Other | $ 854 | $ 732
Performance Bonuses [Member] |  |
Accounts Receivables, Other | 582 | 588
Customers [Member] |  |
Accounts Receivables, Other | 222 | 115
Other [Member] |  |
Accounts Receivables, Other | $ 50 | $ 29

X
- Definition Represents accounts receivables classified as other. + References No definition available. + Details
Name: | nxpl_AccountsReceivablesOther
Namespace Prefix: | nxpl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=nxpl_PerformanceBonusesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=nxpl_CustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=nxpl_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |