Acquisitions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended		12 Months Ended
Dec. 29, 2012 KME Yorkshire Limited [Member]	Feb. 28, 2014 KME Yorkshire Limited [Member]	Aug. 31, 2013 Howell Metal Company [Member]	Oct. 17, 2013 Howell Metal Company [Member]
Business Acquisition [Line Items]
Cost of acquisition		$ 30.1		$ 55.3
Pro forma net sales	196.1		156.3
Fair value of assets acquired		21.1		63.0
Fair value of assets acquired - receivables				14.6
Fair value of assets acquired - inventories		17.6		27.6
Fair value of assets acquired - property, plant and equipment		2.5		20.3
Fair value of assets acquired - other current assets		1.0		0.5
Fair value of liabilities assumed		15.6		11.4
Fair value of liabilities assumed - accounts payable and accrued expenses		15.2		9.9
Fair value of liabilities assumed - other current liabilities		0.4		1.5
Remaining purchase price allocated to other intangible assets		0		2.3
Remaining purchase price allocated to goodwill		$ 24.6		$ 1.4

Amount of cash paid to acquire the entity.

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The amount of acquisition cost of a business combination allocated to assets acquired.

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The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.

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The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.

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The amount of acquisition cost of a business combination allocated to receivables.

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The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity.

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The amount of acquisition cost of a business combination allocated to other current liabilities of the acquired entity. Does not include amounts allocated to the current portion of long-term debt, accounts payable and accrued expenses.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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The amount of acquisition cost of a business combination allocated to liabilities assumed.

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The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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