Income Taxes - Net Deferred Tax (Liability) Asset (Details) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015	Dec. 28, 2013
Deferred Tax Asset:
Foreign and alternative minimum tax credit carryforwards	$ 725	$ 3,819
Reserves and accruals	5,206	5,125
Net operating loss carryforwards	13,937	16,452
Inventory basis difference	3,150us-gaap_DeferredTaxAssetsInventory	2,797us-gaap_DeferredTaxAssetsInventory
Research and development	422	1,017
Employee compensation	4,664	3,199
Allowance for doubtful accounts	555	595
Revenue recognition	299kai_DeferredTaxAssetsRevenueRecognition	253kai_DeferredTaxAssetsRevenueRecognition
Other	94us-gaap_DeferredTaxAssetsOther	209us-gaap_DeferredTaxAssetsOther
Deferred Tax Asset, Gross	29,052us-gaap_DeferredTaxAssetsGross	33,466us-gaap_DeferredTaxAssetsGross
Less: Valuation Allowance	(13,040)	(13,905)
Deferred Tax Asset, Net	16,012us-gaap_DeferredTaxAssetsNet	19,561us-gaap_DeferredTaxAssetsNet
Deferred Tax Liability:
Goodwill and intangible assets	(19,644)	(20,923)
Fixed asset basis difference	(3,426)	(3,619)
Reserves and accruals	(89)	(207)
Other	(531)us-gaap_DeferredTaxLiabilitiesOther	(65)us-gaap_DeferredTaxLiabilitiesOther
Deferred Tax Liability	(23,690)us-gaap_DeferredIncomeTaxLiabilities	(24,814)us-gaap_DeferredIncomeTaxLiabilities
Net Deferred Tax Liability	$ (7,678)us-gaap_DeferredTaxLiabilities	$ (5,253)us-gaap_DeferredTaxLiabilities

Amount before allocation of valuation allowances of deferred tax asset attributable to revenue recognition differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards and alternative minimum tax credit carryforwards.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves not separately disclosed.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences net of deferred tax asset attributable to deductible temporary differences and carryforwards after valuation allowances.

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Amount of deferred tax liability attributable to taxable temporary differences from reserves and accruals.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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