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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 | $ 1,588,000 us-gaap_AllocatedShareBasedCompensationExpense | $ 1,395,000 us-gaap_AllocatedShareBasedCompensationExpense |
Unrecognized compensation expense related to stock awards | 7,990,000 us-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 |  |  | 41,363 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_TitleOfIndividualAxis = us-gaap_ExecutiveOfficerMember
Aggregate fair value of units granted |  |  | 1,857,000 kai_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 |  |  | 52,804 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = kai_TimeBasedRestrictedStockUnitsMember / us-gaap_TitleOfIndividualAxis = kai_ExecutiveOfficersandEmployeesMember
Aggregate fair value of units granted |  |  | 2,341,000 kai_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 |  |  | 22,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_TitleOfIndividualAxis = kai_NonemployeeMember
Aggregate fair value of units granted |  |  | 1,025,000 kai_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 |  |  | 6,250 us-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 |  |  | 5,000 us-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 |  |  | 50,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_TitleOfIndividualAxis = kai_NonemployeedirectorsMember
Aggregate fair value of units granted |  |  | $ 2,279,000 kai_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 |  |  | 10,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember / us-gaap_TitleOfIndividualAxis = kai_NonemployeedirectorsMember

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- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Expected Percentage To Vest + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Aggregate Fair Value + References No definition available. + Details
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- Definition Stock Based Compensation Arrangement by Share Based Payment Award, Target Adjusted EBITDA, Adjustment To Awards + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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