Business Segments and Enterprise-Wide Information (Schedule Of Contributions By Major Customers) (Details)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Wal-Mart Stores Inc.
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	16.30%	15.30%
Walgreen Co.
Revenue, Major Customer [Line Items]
Percentage of revenue contributed by major customers	14.30%	14.20%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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