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Commitment and Contingencies-Textual (Details)	12 Months Ended
	Mar. 28, 2021 lease
Commitments and Contingencies Disclosure [Abstract]
Number of Leases	3

X

- Definition

Number of Leases

+ References

No definition available.

+ Details

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Namespace Prefix:	hwkn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration