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Income Taxes - Schedule of Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure, Valuation Allowance [Roll Forward]
Beginning balance	$ 14,644	$ 14,170	$ 12,950
Net increase in current year	799	91	1,312
Net increase (decrease) in valuation prior period	877	383	(14)
Net decrease in valuation allowance from acquisitions	0	0	(78)
Ending balance	$ 16,320	$ 14,644	$ 14,170

X

- Definition

Income Tax Disclosure, Valuation Allowance

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Acquired From Acquisition

+ References

No definition available.

+ Details

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X

- Definition

Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount, Prior Period

+ References

No definition available.

+ Details

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Namespace Prefix:	lz_
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X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-2

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X

- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-2

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