Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Details Textual)

v2.4.1.9
Goodwill and Intangible Assets (Details Textual) (USD $)
12 Months Ended
Dec. 27, 2014
Sep. 28, 2013
Subsidiaries [Member]    
Finite-Lived Intangible Assets [Line Items]    
Impairment of carrying value of goodwill $ 0us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= us-gaap_SubsidiariesMember
 
HCT [Member]    
Finite-Lived Intangible Assets [Line Items]    
Impairment of carrying value of goodwill 0us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= snhy_HCTMember
0us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= snhy_HCTMember
Identifiable intangible assets 2,658,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ dei_LegalEntityAxis
= snhy_HCTMember
 
Series of Individually Immaterial Business Acquisitions [Member]    
Finite-Lived Intangible Assets [Line Items]    
Identifiable intangible assets $ 746,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ dei_LegalEntityAxis
= snhy_WhiteOakMember