Commitments and Contingencies Re-insurance losses on claims on individual basis (Details)	12 Months Ended
Jan. 02, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Reinsurance Purchased For Stop Losses On Individual Basis	$ 175
Reinsurance Purchased For Stop Losses on Aggregate Basis	$ 7,000

Reinsurance Purchased For Stop Losses On Individual Basis

No definition available.

Name:	snhy_ReinsurancePurchasedForStopLossesOnIndividualBasis
Namespace Prefix:	snhy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration