Segment and Related Information - Summary of Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) reporting_unit	Sep. 30, 2021 USD ($)
Segment and Related Information [Abstract]
Number of operating segments (in reporting units) | reporting_unit			2
Number of reportable segments (in reporting units) | reporting_unit			2
Information as to the Company's segments [Abstract]
Revenues	$ 92,767	$ 77,860	$ 258,145	$ 201,277
Operating (loss) income	(18,443)	(14,109)	(47,351)	(37,105)
Other expense, net	(179)	(539)	(804)	(931)
Interest expense, net	(2,140)	(5,406)	(7,054)	(12,503)
Loss on extinguishment of debt	0	(11,916)	0	(11,916)
Loss before provision for income taxes	(20,762)	(31,970)	(55,209)	(62,455)
Depreciation, amortization and accretion	7,271	8,316	21,110	20,103
Capital expenditures including software costs	1,633	1,961	5,531	6,399
United States
Information as to the Company's segments [Abstract]
Revenues	88,555	71,595	243,406	186,325
International
Information as to the Company's segments [Abstract]
Revenues	4,212	6,265	14,739	14,952
Other
Information as to the Company's segments [Abstract]
Operating (loss) income	(12,593)	(427)	(34,438)	(766)
Depreciation, amortization and accretion	904	2,453	2,657	6,051
Capital expenditures including software costs	161	177	756	465
Restaurant/Retail
Information as to the Company's segments [Abstract]
Revenues	68,354	59,821	191,371	147,529
Restaurant/Retail | Operating segments
Information as to the Company's segments [Abstract]
Operating (loss) income	(8,379)	(15,642)	(19,303)	(40,894)
Depreciation, amortization and accretion	6,255	5,833	18,113	13,789
Capital expenditures including software costs	1,439	1,645	4,686	5,342
Government
Information as to the Company's segments [Abstract]
Revenues	24,413	18,039	66,774	53,748
Government | Operating segments
Information as to the Company's segments [Abstract]
Operating (loss) income	2,529	1,960	6,390	4,555
Depreciation, amortization and accretion	112	30	340	263
Capital expenditures including software costs	$ 33	$ 139	$ 89	$ 592