Debt Instrument, Additional Draw Amount

No definition available.

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Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Delayed Draw Facility, Term

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Option To Draw

+ References

No definition available.

+ Details

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

- Definition

Debt Instrument, Prepayment Premium, Percentage

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Quarterly Payment, Principal, Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	hcat_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of annual principal payment for debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
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+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
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-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

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Balance Type:	debit
Period Type:	duration

- Details

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Period Type:

- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hcat_CreditAgreementMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=hcat_SeniorNotesDue2025Member
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- Details

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Debt - Narrative (Details)	Jul. 16, 2024 USD ($)	Apr. 14, 2020 USD ($) $ / instrument	Mar. 31, 2026 $ / instrument	Apr. 14, 2025 USD ($)	Oct. 29, 2024 USD ($)
Cash flow hedging \| Capped call \| Designated as hedging instrument
Line of Credit Facility [Line Items]
Cap price (in USD per share) \| $ / instrument		42.00	42.00
Credit agreement \| Line of credit
Line of Credit Facility [Line Items]
Credit agreement term	5 years
Maximum borrowing capacity	$ 225,000,000.0
Interest rate	6.50%
Quarterly principal payment percentage	0.25%
Credit agreement \| Line of credit \| Minimum
Line of Credit Facility [Line Items]
Prepayment of premium percentage	1.00%
Credit agreement \| Line of credit \| Maximum
Line of Credit Facility [Line Items]
Prepayment of premium percentage	3.00%
Credit agreement \| Line of credit \| Term loan
Line of Credit Facility [Line Items]
Amount borrowed	$ 125,000,000.0
Credit agreement \| Line of credit \| Delayed draw term loan (DDTL)
Line of Credit Facility [Line Items]
Amount borrowed	100,000,000.0
Option to draw	$ 40,000,000.0
Option to draw, term	18 months
Additional principal amount					$ 37,700,000
Additional delayed draw facility	$ 60,000,000.0
Credit agreement \| Line of credit \| Delayed draw term loan (DDTL) \| Minimum
Line of Credit Facility [Line Items]
Option to draw, term	6 months
Unutilized commitment percentage	1.50%
Credit agreement \| Line of credit \| Delayed draw term loan (DDTL) \| Maximum
Line of Credit Facility [Line Items]
Unutilized commitment percentage	2.50%
Senior Notes Due 2025 \| Convertible notes payable
Line of Credit Facility [Line Items]
Amount borrowed				$ 230,000,000.0
Basis rate (in percentage)		2.50%
Proceeds from issuance of debt		$ 222,500,000