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Stock-Based Compensation (Details) (USD $)
3 Months Ended 0 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Mar. 09, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 1,588,000us-gaap_AllocatedShareBasedCompensationExpense $ 1,395,000us-gaap_AllocatedShareBasedCompensationExpense  
Unrecognized compensation expense related to stock awards 7,990,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized    
Recognition period 1 year 10 months 24 days    
Executive Officer [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of units granted     41,363us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
Aggregate fair value of units granted     1,857,000kai_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsinPeriodAggregateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
Awards expected to vest (as a percentage) 100.00%kai_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpectedPercentageToVest
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
   
Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Adjusted EBITDA between 50% and 100% [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Target Adjusted EBITDA, adjustment to awards     50.00%kai_StockBasedCompensationArrangementbyShareBasedPaymentAwardTargetAdjustedEBITDAAdjustmentToAwards
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
/ us-gaap_VestingAxis
= kai_AdjustedEBITDAbetween50And100PercentMember
Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Adjusted EBITDA between 50% and 100% [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Target Adjusted EBITDA, adjustment to awards     100.00%kai_StockBasedCompensationArrangementbyShareBasedPaymentAwardTargetAdjustedEBITDAAdjustmentToAwards
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
/ us-gaap_VestingAxis
= kai_AdjustedEBITDAbetween50And100PercentMember
Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Adjusted EBITDA between 100% and 115% [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Target Adjusted EBITDA, adjustment to awards     100.00%kai_StockBasedCompensationArrangementbyShareBasedPaymentAwardTargetAdjustedEBITDAAdjustmentToAwards
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
/ us-gaap_VestingAxis
= kai_AdjustedEBITDAbetween100And115PercentMember
Executive Officer [Member] | Restricted Stock Units (RSUs) [Member] | Adjusted EBITDA between 100% and 115% [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Target Adjusted EBITDA, adjustment to awards     150.00%kai_StockBasedCompensationArrangementbyShareBasedPaymentAwardTargetAdjustedEBITDAAdjustmentToAwards
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ExecutiveOfficerMember
/ us-gaap_VestingAxis
= kai_AdjustedEBITDAbetween100And115PercentMember
Executive Officers and Employees [Member] | Time Based Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of units granted     52,804us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= kai_TimeBasedRestrictedStockUnitsMember
/ us-gaap_TitleOfIndividualAxis
= kai_ExecutiveOfficersandEmployeesMember
Aggregate fair value of units granted     2,341,000kai_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsinPeriodAggregateFairValue
/ us-gaap_AwardTypeAxis
= kai_TimeBasedRestrictedStockUnitsMember
/ us-gaap_TitleOfIndividualAxis
= kai_ExecutiveOfficersandEmployeesMember
Non-employee [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of units granted     22,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeeMember
Aggregate fair value of units granted     1,025,000kai_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsinPeriodAggregateFairValue
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeeMember
Non-employee [Member] | Last Day of Q1 and Q2 2015 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Amount of units vesting     6,250us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeeMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember
Non-employee [Member] | Last Day of Q3 and Q4 2015 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Amount of units vesting     5,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeeMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Non-employee directors [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of units granted     50,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeedirectorsMember
Aggregate fair value of units granted     $ 2,279,000kai_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantsinPeriodAggregateFairValue
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeedirectorsMember
Non-employee directors [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of units granted     10,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_TitleOfIndividualAxis
= kai_NonemployeedirectorsMember