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Segment and Related Information, Revenue By Major Customer (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of revenue generated by customer (in hundredths) | 100.00% | 100.00% | 100.00% | 100.00%
Hospitality segment [Member] | McDonald's Corporation [Member] | Operating Segments [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of revenue generated by customer (in hundredths) | 20.00% | 25.00% | 17.00% | 19.00%
Hospitality segment [Member] | Yum! Brands, Inc. [Member] | Operating Segments [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of revenue generated by customer (in hundredths) | 10.00% | 11.00% | 13.00% | 14.00%
Government segment [Member] | U.S. Department of Defense [Member] | Operating Segments [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of revenue generated by customer (in hundredths) | 36.00% | 33.00% | 37.00% | 37.00%
All Others [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of revenue generated by customer (in hundredths) | 34.00% | 31.00% | 33.00% | 30.00%

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