CONDENSED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020
Common stock subject to possible redemption	38,080,223		38,080,223
Income attributable to common stock subject to possible redemption	$ 143,129	$ 358,023	$ 1,456,829
Sponsor [Member]
Common Stock Subject To Forfeiture	38,135,881		38,135,881

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

No definition available.

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