Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hwkn_WaterAndWasteSpecialtiesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hwkn_SoutheastWaterSystemsLLCMember
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Balance Type:
Period Type:

Business Combinations (Details) - USD ($) $ in Thousands	3 Months Ended
Business Combinations (Details) - USD ($) $ in Thousands	Apr. 03, 2022	Dec. 26, 2021	Sep. 26, 2021
NAPCO Chemical Company, Inc.
Asset Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 18,500
Other Payments to Acquire Businesses	$ 500
Water and Waste Specialties, Inc.
Asset Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 1,400
Southeast Water Systems LLC
Asset Acquisition [Line Items]
Payments to Acquire Businesses, Gross			$ 1,200
Business Combination, Consideration Transferred, Liabilities Incurred			$ 1,000