Segment and Related Information - Reconciliation of Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Identifiable assets by geographic area [Abstract]
Assets	$ 797,675	$ 343,749
Long-Lived Assets	203,397	266,845
Goodwill by business segment [Abstract]
Goodwill	458,773	41,214
United States
Identifiable assets by geographic area [Abstract]
Long-Lived Assets	189,129	250,275
Other Countries
Identifiable assets by geographic area [Abstract]
Long-Lived Assets	14,268	16,570
Restaurant/Retail
Goodwill by business segment [Abstract]
Goodwill	458,037	40,478
Government
Goodwill by business segment [Abstract]
Goodwill	736	736
Operating segments | Restaurant/Retail
Identifiable assets by geographic area [Abstract]
Assets	706,141	140,606
Operating segments | Government
Identifiable assets by geographic area [Abstract]
Assets	13,775	13,150
Corporate, Non-Segment
Identifiable assets by geographic area [Abstract]
Assets	$ 77,759	$ 189,993