STATEMENT OF OPERATIONS (Parenthetical)	11 Months Ended
Dec. 31, 2019 USD ($) shares
Income Statement [Abstract]
Common stock subject to possible redemption \| shares	38,116,403
Income attributable to common stock subject to possible redemption \| $	$ 3,286,697

Income loss excluded from computation of earnings per share subject to possible redemptions.

No definition available.

Name:	hyacu_IncomeLossExcludedFromComputationOfEarningsPerShareSubjectToPossibleRedemptions
Namespace Prefix:	hyacu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration