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Commitments and Contingencies (Details) - patent			3 Months Ended
	Mar. 26, 2015	Mar. 24, 2015	Mar. 31, 2015
Purdue Pharma, L. P. patent infringement suit, District of Delaware
Contingencies
Number of patents asserted to have been infringed		4
Purdue Pharma, L. P., patent infringement suit, District of Massachusetts
Contingencies
Number of patents asserted to have been infringed	4
Hatch-Waxman Act of 1984 election to sue for patent infringement | Maximum
Contingencies
Stay period before FDA can issue a final approval if patent litigation is elected			30 months

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- Definition

Represents the stay period before the Federal Drug Administration (FDA) can issue final approval if patent infringement litigation is elected.

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- Definition

Number of another entity's patents that the entity has allegedly infringed.

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