<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="hwkn-20210226.xsd" xlink:type="simple"/>
    <context id="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000046250</identifier>
        </entity>
        <period>
            <startDate>2021-02-26</startDate>
            <endDate>2021-02-26</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl80L2ZyYWc6M2QxMGM0NWNhZWMwNGUzNTg5YTZiOGExZDRiYmJjNTMvdGFibGU6YjEwY2M3MTZjYjg2NGRmMTk2NGI5Y2ZlYmE1ODhhODQvdGFibGVyYW5nZTpiMTBjYzcxNmNiODY0ZGYxOTY0YjljZmViYTU4OGE4NF8wLTEtMS0xLTA_966a9e81-e8f1-4a48-8eef-1ae62af45920">0000046250</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl80L2ZyYWc6M2QxMGM0NWNhZWMwNGUzNTg5YTZiOGExZDRiYmJjNTMvdGFibGU6YjEwY2M3MTZjYjg2NGRmMTk2NGI5Y2ZlYmE1ODhhODQvdGFibGVyYW5nZTpiMTBjYzcxNmNiODY0ZGYxOTY0YjljZmViYTU4OGE4NF8xLTEtMS0xLTA_8d593608-af7f-46f6-a0df-3970d62af991">false</dei:AmendmentFlag>
    <dei:CurrentFiscalYearEndDate
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl80L2ZyYWc6M2QxMGM0NWNhZWMwNGUzNTg5YTZiOGExZDRiYmJjNTMvdGFibGU6YjEwY2M3MTZjYjg2NGRmMTk2NGI5Y2ZlYmE1ODhhODQvdGFibGVyYW5nZTpiMTBjYzcxNmNiODY0ZGYxOTY0YjljZmViYTU4OGE4NF8yLTEtMS0xLTg5_20970f15-8ca9-4b77-88bf-ba81004c4b4a">--03-28</dei:CurrentFiscalYearEndDate>
    <dei:DocumentType
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGV4dHJlZ2lvbjoyYmM3ZTQwODdmYTM0ZWIyOWIxNmE0NmVmM2I4ZjkzZV8xMTkx_d776a4f4-d489-4748-8619-6c3c61b92259">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGV4dHJlZ2lvbjoyYmM3ZTQwODdmYTM0ZWIyOWIxNmE0NmVmM2I4ZjkzZV8xMTkz_dfe31cd5-727c-437d-b6df-bc3f88cc1839">2021-02-26</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGV4dHJlZ2lvbjoyYmM3ZTQwODdmYTM0ZWIyOWIxNmE0NmVmM2I4ZjkzZV8xMTk0_a4d32cef-fe3d-4fb5-9481-3e51fbc6dd0b">Hawkins, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6M2JiNmJmZmUxNTM5NDYyMjkwNDU5MGZkNWYyZDQxMmEvdGFibGVyYW5nZTozYmI2YmZmZTE1Mzk0NjIyOTA0NTkwZmQ1ZjJkNDEyYV8wLTAtMS0xLTA_6cbef235-3bbf-47f1-8e0d-4430b9c03e1a">MN</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6M2JiNmJmZmUxNTM5NDYyMjkwNDU5MGZkNWYyZDQxMmEvdGFibGVyYW5nZTozYmI2YmZmZTE1Mzk0NjIyOTA0NTkwZmQ1ZjJkNDEyYV8wLTItMS0xLTA_3a09325e-9b7c-4a75-8904-2a5a5fe743ef">0-7647</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6M2JiNmJmZmUxNTM5NDYyMjkwNDU5MGZkNWYyZDQxMmEvdGFibGVyYW5nZTozYmI2YmZmZTE1Mzk0NjIyOTA0NTkwZmQ1ZjJkNDEyYV8wLTQtMS0xLTA_6a9a9b5b-3949-4fe4-b730-ffddcf622260">41-0771293</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6N2RhM2RmMTA5ODk3NDhkMGFiMmI0OWE1ZmI0NjM1ODMvdGFibGVyYW5nZTo3ZGEzZGYxMDk4OTc0OGQwYWIyYjQ5YTVmYjQ2MzU4M18wLTAtMS0xLTA_79d30c00-b7a3-46d7-9880-3da89060b113">2381 Rosegate,</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6N2RhM2RmMTA5ODk3NDhkMGFiMmI0OWE1ZmI0NjM1ODMvdGFibGVyYW5nZTo3ZGEzZGYxMDk4OTc0OGQwYWIyYjQ5YTVmYjQ2MzU4M18wLTEtMS0xLTA_768ca151-3953-4cba-9161-deb4da94e715">Roseville,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6N2RhM2RmMTA5ODk3NDhkMGFiMmI0OWE1ZmI0NjM1ODMvdGFibGVyYW5nZTo3ZGEzZGYxMDk4OTc0OGQwYWIyYjQ5YTVmYjQ2MzU4M18wLTItMS0xLTA_a15af0f8-5d9e-4b72-a7f3-e96cef741ce7">MN</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6N2RhM2RmMTA5ODk3NDhkMGFiMmI0OWE1ZmI0NjM1ODMvdGFibGVyYW5nZTo3ZGEzZGYxMDk4OTc0OGQwYWIyYjQ5YTVmYjQ2MzU4M18wLTQtMS0xLTA_09aaa2c7-a9f2-464c-b144-bff51fb2face">55113</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGV4dHJlZ2lvbjoyYmM3ZTQwODdmYTM0ZWIyOWIxNmE0NmVmM2I4ZjkzZV8zODA_001256be-aa8c-47f0-898c-cd69d9e1ff6e">612</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGV4dHJlZ2lvbjoyYmM3ZTQwODdmYTM0ZWIyOWIxNmE0NmVmM2I4ZjkzZV8xMTk2_bce790f4-4a7b-490d-a61a-1adec4b7ad7b">331-6910</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6NTcyMDkxNjQyM2M2NDQ4M2E3OThiNDM1NzEyN2IzMzUvdGFibGVyYW5nZTo1NzIwOTE2NDIzYzY0NDgzYTc5OGI0MzU3MTI3YjMzNV8wLTAtMS0xLTA_8f53dc09-6bca-4672-a92e-e4ce8d0c88d4">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6NTcyMDkxNjQyM2M2NDQ4M2E3OThiNDM1NzEyN2IzMzUvdGFibGVyYW5nZTo1NzIwOTE2NDIzYzY0NDgzYTc5OGI0MzU3MTI3YjMzNV8yLTAtMS0xLTA_bd6f1f52-f801-41c6-9787-d277bda7b0d6">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6NTcyMDkxNjQyM2M2NDQ4M2E3OThiNDM1NzEyN2IzMzUvdGFibGVyYW5nZTo1NzIwOTE2NDIzYzY0NDgzYTc5OGI0MzU3MTI3YjMzNV80LTAtMS0xLTA_d377aaca-3c8a-4183-89ea-57a02513590e">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6NTcyMDkxNjQyM2M2NDQ4M2E3OThiNDM1NzEyN2IzMzUvdGFibGVyYW5nZTo1NzIwOTE2NDIzYzY0NDgzYTc5OGI0MzU3MTI3YjMzNV82LTAtMS0xLTA_88858565-4d10-400a-bf5a-3a6fc9a35d29">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6MTY5ZGJkYTE5YTcxNDAyYWIyYzRmNTllYTAxYTA0ZDQvdGFibGVyYW5nZToxNjlkYmRhMTlhNzE0MDJhYjJjNGY1OWVhMDFhMDRkNF8xLTAtMS0xLTA_b4293d3d-4802-430f-9572-877d105a7f6e">Common Stock, par value $.01 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6MTY5ZGJkYTE5YTcxNDAyYWIyYzRmNTllYTAxYTA0ZDQvdGFibGVyYW5nZToxNjlkYmRhMTlhNzE0MDJhYjJjNGY1OWVhMDFhMDRkNF8xLTEtMS0xLTA_8d9da499-247a-4608-8382-41b502ca361f">HWKN</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGFibGU6MTY5ZGJkYTE5YTcxNDAyYWIyYzRmNTllYTAxYTA0ZDQvdGFibGVyYW5nZToxNjlkYmRhMTlhNzE0MDJhYjJjNGY1OWVhMDFhMDRkNF8xLTItMS0xLTA_969a34cc-43ea-4929-9cf3-8f8318d12cd1">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="i4ab48200b9404708ab706e3e7497feb1_D20210226-20210226"
      id="id3VybDovL2RvY3MudjEvZG9jOjdjNzFhMTViYzU1MjQ3YThiN2UxZjE0NGM5YTYzZjU2L3NlYzo3YzcxYTE1YmM1NTI0N2E4YjdlMWYxNDRjOWE2M2Y1Nl8xL2ZyYWc6MmJjN2U0MDg3ZmEzNGViMjliMTZhNDZlZjNiOGY5M2UvdGV4dHJlZ2lvbjoyYmM3ZTQwODdmYTM0ZWIyOWIxNmE0NmVmM2I4ZjkzZV8xMTk3_fcc2920d-03f8-4990-942b-2fcec5a47a28">false</dei:EntityEmergingGrowthCompany>
</xbrl>
