Segment and Related Information, Revenue By Major Customer (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	100.00%	100.00%
Hospitality segment [Member] | McDonald's Corporation [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	14.00%	13.00%
Hospitality segment [Member] | Yum! Brands, Inc. [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	11.00%	15.00%
Government segment [Member] | U.S. Department of Defense [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	42.00%	40.00%
All Others [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	33.00%	32.00%