Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details Textual)

v2.4.1.9
Stock Based Compensation (Details Textual)
3 Months Ended 3 Months Ended
Mar. 28, 2015
USD ($)
Mar. 29, 2014
USD ($)
Mar. 28, 2015
Director Equity Plan [Member]
USD ($)
Mar. 29, 2014
Director Equity Plan [Member]
USD ($)
Mar. 28, 2015
2006 Stock Option Plan [Member]
Awards
Mar. 28, 2015
2006 Stock Option Plan [Member]
Maximum [Member]
Mar. 28, 2015
2001 Restricted Stock Plan [Member]
USD ($)
Mar. 29, 2014
2001 Restricted Stock Plan [Member]
USD ($)
Mar. 28, 2015
Equity Incentive Plan (2011 Plan) [Member]
Mar. 28, 2015
Employee Stock Purchase Plan [Member]
USD ($)
Mar. 29, 2014
Employee Stock Purchase Plan [Member]
USD ($)
Mar. 28, 2015
Employee Stock Purchase Plan [Member]
Minimum [Member]
Mar. 28, 2015
Employee Stock Purchase Plan [Member]
Minimum [Member]
United States [Member]
USD ($)
Mar. 28, 2015
Employee Stock Purchase Plan [Member]
Minimum [Member]
United Kingdom [Member]
GBP (£)
Mar. 28, 2015
Employee Stock Purchase Plan and U.K. Plan [Member]
Mar. 28, 2015
Nonemployee Director Equity and Deferred Compensation Plan [Member]
USD ($)
Stock Option Plans (Textual) [Abstract]                                
Shares available for issuance     25,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
  1,125,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndSixStockOptionPlanMember
  928,125us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndOneStockOptionPlanMember
                218,249us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= snhy_NonemployeeDirectorEquityAndDeferredCompensationPlanMember
Exercise price per share not less than fair value percent         110.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndSixStockOptionPlanMember
                     
Exercise price per share more than voting stock         10.00%snhy_ExercisePricePerShareMoreThanVotingStock
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndSixStockOptionPlanMember
                     
Stock options maximum term (in years)           10 years                    
Number of awards granted under 2006 plan         0snhy_ShareBasedCompensationArrangementByShareBasedPaymentNumberOfAwardsGrantedUnderPlan
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndSixStockOptionPlanMember
                     
Minimum period before shares become non-forfeitable (in months)             6 months                  
Plan Expiration year             2011                  
Aggregate shares of restricted stock grant 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod               1,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= snhy_EquityIncentivePlanTwoThousandAndElevenPlanMember
1,096,875us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
           
Remaining number of shares to be issued     270,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
          629,462us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= snhy_EquityIncentivePlanTwoThousandAndElevenPlanMember
          642,983us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= snhy_EmployeeStockPurchasePlanAndUnitedKingdomPlanMember
 
Restricted stock expense             $ 683,000us-gaap_RestrictedStockExpense
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndOneStockOptionPlanMember
$ 678,000us-gaap_RestrictedStockExpense
/ us-gaap_AwardTypeAxis
= snhy_TwoThousandAndOneStockOptionPlanMember
               
Total unrecognized compensation 4,795,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized                              
Recognized weighted average period (in years) 1 year 5 months 45 days                              
Rate of common stock at market value                   85.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
           
Ratio for additional common stock shares issued, under ESPP 6snhy_EmployeeStockPurchasePlanIssueOfAdditionalCommonStockSharesRatio                              
Shares allowed to be purchased by U.S. employees and U.K. employees                         25,000snhy_ShareBasedCompensationCommonStockAllowedToPurchaseOnMarketValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementBusinessSegmentsAxis
= country_US
1,500snhy_ShareBasedCompensationCommonStockAllowedToPurchaseOnMarketValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementBusinessSegmentsAxis
= country_GB
   
Allowable purchase rate of common stock based on annual salary                       10.00%snhy_ShareBasedCompensationAllowablePurchaseRateOfCommonStockBasedOnAnnualSalary
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
       
Number of shares purchased by employees                   10,410snhy_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
5,850snhy_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
         
Weighted average price                   $ 31.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
$ 31.63us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
         
Share based Compensation Expenses 76,000us-gaap_EmployeeBenefitsAndShareBasedCompensation 52,000us-gaap_EmployeeBenefitsAndShareBasedCompensation                            
Stock option granted, shares     4,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
4,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
                      375us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= snhy_NonemployeeDirectorEquityAndDeferredCompensationPlanMember
Cash fees paid                               3,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid
/ us-gaap_AwardTypeAxis
= snhy_NonemployeeDirectorEquityAndDeferredCompensationPlanMember
Fee for the chairs of each Board committee     125.00%snhy_RateOfAdditionalFeesReceivedBasedOnNormalCompensation
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
                        25.00%snhy_RateOfAdditionalFeesReceivedBasedOnNormalCompensation
/ us-gaap_AwardTypeAxis
= snhy_NonemployeeDirectorEquityAndDeferredCompensationPlanMember
Deferred stock units outstanding 0us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance                              
Common stock shares for each nonemployee director     500us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionQuantityOfSecuritiesIssued
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
                         
Share based Compensation Expenses under Director's plan     $ 178,000us-gaap_StockOptionPlanExpense
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember
$ 170,000us-gaap_StockOptionPlanExpense
/ us-gaap_PlanNameAxis
= snhy_DirectorEquityPlanMember