Guarantor/Non-Guarantor Financial Information - Summary of Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Statement Of Income Captions [Line Items]
Total revenue	$ 187,487		$ 128,657		$ 357,872	$ 218,515
Operating expenses	55,196		36,434		106,259	66,926
Selling, general and administrative expenses	40,152		26,229		81,787	54,672
Depreciation, amortization and (gain) loss on disposal of assets, net	34,939		27,012		70,846	55,277
Total costs and expenses	142,326		97,151		280,705	185,258
Income (loss) from operations	45,161		31,506		77,167	33,257
Interest expense, net	14,485		11,680		28,764	20,844
Change in fair value of private placement warrants	(6,600)		8,067		(2,866)	10,134
Tax receivable agreement liability adjustment	(965)		1,661		(965)	1,661
Loss on extinguishment of debt	0		0		0	5,334
Other income, net	(4,039)		(2,798)		(6,905)	(5,811)
Total other (income) expenses	2,881		18,610		18,028	32,162
Income (loss) before income taxes	42,280		12,896		59,139	1,095
Income tax provision (benefit)	12,639		8,904		19,458	6,018
Net income (loss)	29,641	$ 10,040	3,992	$ (8,915)	39,681	(4,923)
Other comprehensive loss:
Change in foreign currency translation adjustment	(10,381)		351		(7,673)	161
Total comprehensive income (loss)	19,260		4,343		32,008	(4,762)
Verra Mobility Corporation (Ultimate Parent)
Condensed Statement Of Income Captions [Line Items]
Income from equity investment					(39,681)
Income (Loss) From Equity Investments	(29,641)
Total other (income) expenses	(29,641)				(39,681)
Income (loss) before income taxes	29,641				39,681
Net income (loss)	29,641				39,681
Other comprehensive loss:
Total comprehensive income (loss)	29,641				39,681
VM Consolidated Inc. (Guarantor Subsidiary)
Condensed Statement Of Income Captions [Line Items]
Sales to affiliates	(348)				(348)
Total revenue	165,255				313,294
Cost of sales to affiliates	(3)				(3)
Operating expenses	45,283				87,248
Selling, general and administrative expenses	32,465				68,068
Depreciation, amortization and (gain) loss on disposal of assets, net	29,875				60,614
Total costs and expenses	115,409				229,016
Income (loss) from operations	49,846				84,278
Income from equity investment					5,254
Income (Loss) From Equity Investments	3,942
Interest expense, net	14,482				28,761
Change in fair value of private placement warrants	(6,600)				(2,866)
Tax receivable agreement liability adjustment	(965)				(965)
Other income, net	(3,186)				(5,874)
Total other (income) expenses	7,673				24,310
Income (loss) before income taxes	42,173				59,968
Income tax provision (benefit)	12,532				20,287
Net income (loss)	29,641				39,681
Other comprehensive loss:
Total comprehensive income (loss)	29,641				39,681
Non-guarantor Subsidiaries
Condensed Statement Of Income Captions [Line Items]
Sales to affiliates	348				348
Total revenue	22,232				44,578
Cost of sales to affiliates	3				3
Operating expenses	9,913				19,011
Selling, general and administrative expenses	7,687				13,719
Depreciation, amortization and (gain) loss on disposal of assets, net	5,064				10,232
Total costs and expenses	26,917				51,689
Income (loss) from operations	(4,685)				(7,111)
Income from equity investment
Interest expense, net	3				3
Other income, net	(853)				(1,031)
Total other (income) expenses	(850)				(1,028)
Income (loss) before income taxes	(3,835)				(6,083)
Income tax provision (benefit)	107				(829)
Net income (loss)	(3,942)				(5,254)
Other comprehensive loss:
Change in foreign currency translation adjustment	(10,381)				(7,673)
Total comprehensive income (loss)	(14,323)				(12,927)
Eliminations
Condensed Statement Of Income Captions [Line Items]
Income from equity investment					34,427
Income (Loss) From Equity Investments	25,699
Total other (income) expenses	25,699				34,427
Income (loss) before income taxes	(25,699)				(34,427)
Net income (loss)	(25,699)				(34,427)
Other comprehensive loss:
Total comprehensive income (loss)	(25,699)				(34,427)
Service Revenue
Condensed Statement Of Income Captions [Line Items]
Total revenue	174,502		116,426		335,636	206,189
Cost of revenue	3,713		1,332		7,492	2,212
Service Revenue | VM Consolidated Inc. (Guarantor Subsidiary)
Condensed Statement Of Income Captions [Line Items]
Total revenue	157,137				300,301
Cost of revenue	2,499				4,974
Service Revenue | Non-guarantor Subsidiaries
Condensed Statement Of Income Captions [Line Items]
Total revenue	17,365				35,335
Cost of revenue	1,214				2,518
Product Sales
Condensed Statement Of Income Captions [Line Items]
Total revenue	12,985		12,231		22,236	12,326
Cost of revenue	8,326		$ 6,144		14,321	$ 6,171
Product Sales | VM Consolidated Inc. (Guarantor Subsidiary)
Condensed Statement Of Income Captions [Line Items]
Total revenue	8,466				13,341
Cost of revenue	5,290				8,115
Product Sales | Non-guarantor Subsidiaries
Condensed Statement Of Income Captions [Line Items]
Total revenue	4,519				8,895
Cost of revenue	$ 3,036				$ 6,206