Commitments and Contingencies Re-insurance losses on claims on individual basis (Details) (USD $)	12 Months Ended
Dec. 27, 2014
Commitments and Contingencies Disclosure [Abstract]
Reinsurance Purchased For Stop Losses On Individual Basis	$ 155
Reinsurance Purchased For Stop Losses on Aggregate Basis	$ 7,200

Reinsurance Purchased For Stop Losses On Individual Basis

No definition available.

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