Segment and Related Information - Reconciliation of Segment Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Identifiable assets by geographic area [Abstract]
Assets	$ 809,209	$ 854,858
Goodwill by business segment [Abstract]
Goodwill	487,073	486,762
United States
Identifiable assets by geographic area [Abstract]
Assets	770,083	809,437
Other Countries
Identifiable assets by geographic area [Abstract]
Assets	39,126	45,421
Restaurant/Retail
Goodwill by business segment [Abstract]
Goodwill	486,337	486,026
Government
Goodwill by business segment [Abstract]
Goodwill	736	736
Operating Segments | Restaurant/Retail
Identifiable assets by geographic area [Abstract]
Assets	691,881	722,958
Operating Segments | Government
Identifiable assets by geographic area [Abstract]
Assets	25,720	21,443
Other
Identifiable assets by geographic area [Abstract]
Assets	$ 91,608	$ 110,457