v3.20.4

Employee Benefit Plan - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]
Days of service needed in order to enroll in 401(k) plan	90 days
Maximum percentage for contribution	60.00%
Defined contribution plan, cost	$ 8.5	$ 7.7	$ 7.3
The 401(k) Plan \| Amount Contributed on Percentage of Pay, Tier One
Defined Contribution Plan Disclosure [Line Items]
Percent of match	100.00%
Percent of employee's gross pay matched	4.00%
The 401(k) Plan \| Amount Contributed on Percentage of Pay, Tier Two
Defined Contribution Plan Disclosure [Line Items]
Percent of match	50.00%
Percent of employee's gross pay matched	1.00%

Defined Contribution Plan, Days of Service Needed to Enroll in Plan

+ References

No definition available.

+ Details

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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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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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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HMS HOLDINGS CORP 10-K