Segment and Related Information, Revenue By Major Customer (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer	100.00%	100.00%
Hospitality segment [Member] | McDonald's Corporation [Member] | Reportable Segments [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer	19.00%	16.00%
Hospitality segment [Member] | Yum! Brands, Inc. [Member] | Reportable Segments [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer	10.00%	12.00%
Government segment [Member] | U.S. Department of Defense [Member] | Reportable Segments [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer	38.00%	40.00%
All Others [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer	33.00%	32.00%