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v3.19.3.a.u2

Operating Leases (Details Textual) $ in Thousands | 12 Months Ended
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Dec. 28, 2019 USD ($)
Leases [Line Items] |
Operating lease cost | $ 3,689
Minimum [Member] |
Leases [Line Items] |
Operating leases, remaining lease term | 1 year
Maximum [Member] |
Leases [Line Items] |
Operating leases, remaining lease term | 11 years

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- Definition Leases. + References No definition available. + Details
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Namespace Prefix: | hlio_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Lessee operating lease remaining lease term. + References No definition available. + Details
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Namespace Prefix: | hlio_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |