| Basis of Presentation and Summary of Business (Details Textual) | Apr. 01, 2013 | Mar. 30, 2013 | 
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Equity method investment, ownership percentage | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage | |
| Percentage of Common Stock Purchased | 60.00%snhy_PurchaseOfRemainingInterestInEquityInvestee | 
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- Definition Purchase of remaining interest in equity investee. No definition available. 
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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