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Subsequent Events - Additional Information (Detail) - USD ($)	Mar. 15, 2021	Mar. 31, 2021	Jan. 12, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Cash		$ 377,294		$ 1,178,377
Class of warrant, exercise price		$ 11.50		$ 11.50
Credit Agreement [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Percentage of minimum net required on annual projections	85.00%
Credit Agreement [Member] | Term Loan [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
Credit Agreement [Member] | Revolving Credit Facility [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	0.50%
Talkspace Network LLC [Member] | Credit Agreement [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 5,000,000
Debt instrument, term	36 months
Talkspace Network LLC [Member] | Credit Agreement [Member] | Term Loan [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 15,000,000
JPMorgan Chase Bank, N.A [Member] | Credit Agreement [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Class of warrant or right, number of securities called by warrants or rights	114,454
Class of warrant, exercise price	$ 0.01
Proceeds from issuance of warrants	$ 20,000,000
Minimum [Member] | Credit Agreement [Member] | Term Loan [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	4.75%
Minimum [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	3.75%
Subsequent Event [Member] | Credit Agreement [Member] | Term Loan [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Percentage of minimum net required on annual projections	85.00%
Debt instrument, interest rate, stated percentage	1.50%
Subsequent Event [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	0.50%
Subsequent Event [Member] | Talkspace Network LLC [Member] | Credit Agreement [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 5,000,000
Debt instrument, term	36 months
Subsequent Event [Member] | Talkspace Network LLC [Member] | Credit Agreement [Member] | Term Loan [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 15,000,000
Subsequent Event [Member] | JPMorgan Chase Bank, N.A [Member] | Credit Agreement [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Class of warrant or right, number of securities called by warrants or rights	114,454
Class of warrant, exercise price	$ 0.01
Proceeds from issuance of warrants	$ 20,000,000
Subsequent Event [Member] | Minimum [Member] | Credit Agreement [Member] | Term Loan [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	4.75%
Subsequent Event [Member] | Minimum [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage	3.75%
Subsequent Event [Member] | Talkspace, Inc [Member] | Groop Internet Platform Inc [Member]
Subsequent Event [Line Items]
Business acquisition, estimated value of the entity			$ 1,400,000,000
Cash			$ 250,000,000

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- Definition

Business acquisition, estimated value of the entity.

+ References

No definition available.

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- Definition

Percentage of minimum net required on annual projections.

+ References

No definition available.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 45
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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

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- 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.

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- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

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