Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Details)

v2.4.1.9
Long-Term Debt (Details) (USD $)
0 Months Ended 12 Months Ended
Aug. 01, 2011
CreditFacility
Dec. 27, 2014
covenant
Dec. 28, 2013
Long-Term Debt (Textual) [Abstract]      
Effective date Aug. 01, 2011    
Number of credit facilities 3snhy_NumberOfCreditFacilities    
Credit facilities, maximum capacity $ 50,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Required minimum EBITDA (not less than)   5,000,000snhy_DebtCovenantMinimumEBITDARequirement  
Number of debt covenants   2snhy_NumberofDebtCovenants  
Funded debt to EBITDA   3.0snhy_DebttoEarningBeforeIncomeTaxDepreciationandAmortization  
EBIT to Interest Expense ratio   2.5snhy_EarningBeforeIncomeTaxDepreciationandAmortizationtoInterestExpenses  
Line of Credit Amortization   0snhy_LineOfCreditAmortization 0snhy_LineOfCreditAmortization
Facility B [Member]      
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity   35,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= snhy_FacilityBMember
 
Line of Credit Facility, Interest Rate Description   P30D  
Facility [Member]      
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity   15,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= snhy_FacilityMember
 
Variable interest rate   1.45%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= snhy_FacilityMember
 
Line of Credit Facility, Interest Rate Description   P30D  
Debt Instrument, Restrictive Covenants   92000000  
Debt covenant, Minimum Tangible Net Worth   5000000  
Debt Covenant, Minimum Tangible Net Worth, Annual Increase by Percentage of Net Income   50.00%snhy_DebtCovenantMinimumTangibleNetWorthAnnualIncreaseByPercentageOfNetIncome
/ us-gaap_CreditFacilityAxis
= snhy_FacilityMember
 
Facility B [Member]      
Long-Term Debt (Textual) [Abstract]      
Expiration date   Aug. 01, 2016  
Funded debt to EBITDA   3.0snhy_DebttoEarningBeforeIncomeTaxDepreciationandAmortization
/ us-gaap_LineOfCreditFacilityAxis
= snhy_FacilityBMember
 
EBIT to Interest Expense ratio   2.5snhy_EarningBeforeIncomeTaxDepreciationandAmortizationtoInterestExpenses
/ us-gaap_LineOfCreditFacilityAxis
= snhy_FacilityBMember
 
Facility B [Member] | Base Rate [Member] | Minimum [Member]      
Long-Term Debt (Textual) [Abstract]      
Variable interest rate   (0.25%)us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_BaseRateMember
/ us-gaap_LineOfCreditFacilityAxis
= snhy_FacilityBMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Facility B [Member] | Base Rate [Member] | Maximum [Member]      
Long-Term Debt (Textual) [Abstract]      
Variable interest rate   0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_BaseRateMember
/ us-gaap_LineOfCreditFacilityAxis
= snhy_FacilityBMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Facility B [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]      
Long-Term Debt (Textual) [Abstract]      
Variable interest rate   1.45%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
/ us-gaap_LineOfCreditFacilityAxis
= snhy_FacilityBMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Facility B [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]      
Long-Term Debt (Textual) [Abstract]      
Variable interest rate   2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
/ us-gaap_LineOfCreditFacilityAxis
= snhy_FacilityBMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Facility [Member]      
Long-Term Debt (Textual) [Abstract]      
Expiration date   Aug. 01, 2016  
Secured Debt [Member]      
Long-Term Debt (Textual) [Abstract]      
Payments on credit facility   Facility C requires monthly payments of interest for the first 24 months and monthly payments of principal plus accrued interest for 60 months  
Secured Debt [Member] | Secured Debt [Member]      
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity   $ 15,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_SecuredDebtMember
/ us-gaap_LineOfCreditFacilityAxis
= us-gaap_SecuredDebtMember