Segment and Related Information - Reconciliation of Segment Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Identifiable assets by geographic area [Abstract]
Assets	$ 871,696	$ 888,149
Long-Lived Assets	871,696	888,149
Goodwill by business segment [Abstract]
Goodwill	457,433	457,306
United States
Identifiable assets by geographic area [Abstract]
Long-Lived Assets	858,071	871,184
Other Countries
Identifiable assets by geographic area [Abstract]
Long-Lived Assets	13,625	16,965
Restaurant/Retail
Goodwill by business segment [Abstract]
Goodwill	456,697	456,570
Government
Goodwill by business segment [Abstract]
Goodwill	736	736
Operating segments | Restaurant/Retail
Identifiable assets by geographic area [Abstract]
Assets	681,911	674,032
Operating segments | Government
Identifiable assets by geographic area [Abstract]
Assets	21,080	14,831
Other
Identifiable assets by geographic area [Abstract]
Assets	$ 168,705	$ 199,286