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v3.19.1

Segment Reporting (Details Textual) $ in Thousands | 3 Months Ended
--- | ---
Mar. 30, 2019 USD ($) Segment
Segment Reporting Information [Line Items] |
Number of reportable segments | Segment | 2
Corporate and Other [Member] |
Segment Reporting Information [Line Items] |
Amortization of Acquisition-related intangible assets | $ | $ 4,442

X
- Definition Amortization of acquisition-related intangible assets. + References No definition available. + Details
Name: | snhy_AmortizationOfAcquisitionRelatedIntangibleAssets
Namespace Prefix: | snhy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=snhy_CorporateReconcilingItemsAndEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |