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Capital Commitments - Additional Information (Detail) $ in Millions	Jul. 26, 2021 USD ($) ft²
Other Commitments [Abstract]
Capital commitments | $	$ 10
Area of construction | ft²	250,000

X

- Definition

Area of construction of factory second phase.

+ References

No definition available.

+ Details

Name:	ncl_AreaOfConstructionOfFactorySecondPhase
Namespace Prefix:	ncl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration