XML 43 R33.htm IDEA: XBRL DOCUMENT v3.22.1

Fair value measurements - Summary of changes in the fair value of warrant liabilities (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Feb. 14, 2022	Feb. 09, 2022	Feb. 04, 2022	Mar. 04, 2021
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items]
Change in valuation inputs or other assumptions	$ (2,351,375)	$ (619,543)
Fair Value, Inputs, Level 3 [Member]
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items]
Beginning balance	4,063,666	$ 0	$ 0
Additional warrants issued in over-allotment			1,420,125
Transfer of Public Warrants to Level 1 measurement			(16,748,125)
Change in valuation inputs or other assumptions	(1,001,200)		(7,793,334)
Ending balance	3,134,466		4,063,666
Convertible Promissory Note [Member]
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items]
Initial measurement of draw on convertible promissory note - related party	72,800			$ 14,800	$ 27,600	$ 29,600
Convertible Promissory Note [Member] | Fair Value, Inputs, Level 3 [Member]
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items]
Initial measurement of draw on convertible promissory note - related party				$ 14,800	$ 27,600	$ 29,600
Private Placement Warrants
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items]
Beginning balance	4,063,666
Ending balance	3,061,666		4,063,666
Private Placement Warrants | Fair Value, Inputs, Level 3 [Member]
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items]
Beginning balance	4,063,666
Initial measurement of Public Warrants and Private Placement Warrants as of March 4, 2021							$ 27,185,000
Ending balance	$ 3,061,666		$ 4,063,666

X

- Definition

Initial measurement of warrants issued in connection with initial public offering noncash transaction

+ References

No definition available.

+ Details

Name:	hyac_InitialmeasurementOfWarrantsIssuedInConnectionWithInitialPublicOfferingNoncashTransaction
Namespace Prefix:	hyac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	hyac_ScheduleOfChangesInTheFairValueOfWarrantLiabilitiesLineItems
Namespace Prefix:	hyac_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875

+ Details

Name:	us-gaap_FairValueAdjustmentOfWarrants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.

+ References

No definition available.

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

+ References

No definition available.

+ Details

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

X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

+ Details

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

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=hyac_ConvertiblePromissoryNoteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=hyac_PrivatePlacementWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: