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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Deferred Offering Costs (Details) $ in Millions	Dec. 31, 2024 USD ($)
IPO
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Offering costs incurred	$ 2.4

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- 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

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

The amount of deferred offering costs incurred.

+ References

No definition available.

+ Details

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Namespace Prefix:	zspc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: