Segment and Related Information, Revenue By Major Customer (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
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] | Reportable Segments [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	22.00%	16.00%	19.00%	15.00%
Hospitality segment [Member] | Yum! Brands, Inc. [Member] | Reportable Segments [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	13.00%	17.00%	10.00%	14.00%
Government segment [Member] | U.S. Department of Defense [Member] | Reportable Segments [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	34.00%	34.00%	37.00%	38.00%
All Others [Member]
Revenue, Major Customer [Line Items]
Percentage of revenue generated by customer (in hundredths)	31.00%	33.00%	34.00%	33.00%