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Income Taxes - Changes in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Changes In Deferred Tax Asset, Valuation Allowance [Roll Forward]
Balance at beginning of year	$ 4,888	$ 4,287
Provision for income taxes	361	643
Write-offs and Deductions	(43)	(42)
Balance at end of year	$ 5,206	$ 4,888

X

- Definition

Changes In Deferred Tax Asset, Valuation Allowance [Roll Forward]

+ References

No definition available.

+ Details

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Balance Type:	na
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X

- Definition

Valuation Allowance, Write-Off And Deductions

+ References

No definition available.

+ Details

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Namespace Prefix:	ehth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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

+ Details

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- 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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