Guarantor/Non-Guarantor Financial Information - Summary of Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Condensed Statement Of Income Captions [Line Items]
Total revenue	$ 170,385	$ 89,858
Operating expenses	51,063	30,492
Selling, general and administrative expenses	41,635	28,443
Depreciation, amortization and (gain) loss on disposal of assets, net	35,907	28,265
Total costs and expenses	138,379	88,107
Income from operations	32,006	1,751
Interest expense, net	14,279	9,164
Change in fair value of private placement warrants	3,734	2,067
Other income, net	(2,866)	(3,013)
Total other (income) expenses	15,147	13,552
Income (loss) before income taxes	16,859	(11,801)
Income tax provision (benefit)	6,819	(2,886)
Loss on extinguishment of debt	0	5,334
Net income (loss)	10,040	(8,915)
Other comprehensive income (loss):
Change in foreign currency translation adjustment	2,708	(190)
Total comprehensive income	12,748	(9,105)
Verra Mobility Corporation (Ultimate Parent)
Condensed Statement Of Income Captions [Line Items]
Income from equity investment	(10,040)
Total other (income) expenses	(10,040)
Income (loss) before income taxes	10,040
Net income (loss)	10,040
Other comprehensive income (loss):
Total comprehensive income	10,040
VM Consolidated Inc. (Guarantor Subsidiary)
Condensed Statement Of Income Captions [Line Items]
Total revenue	148,039
Operating expenses	41,965
Selling, general and administrative expenses	35,603
Depreciation, amortization and (gain) loss on disposal of assets, net	30,739
Total costs and expenses	113,607
Income from operations	34,432
Income from equity investment	1,312
Interest expense, net	14,279
Change in fair value of private placement warrants	3,734
Other income, net	(2,688)
Total other (income) expenses	16,637
Income (loss) before income taxes	17,795
Income tax provision (benefit)	7,755
Net income (loss)	10,040
Other comprehensive income (loss):
Total comprehensive income	10,040
Non-guarantor Subsidiaries
Condensed Statement Of Income Captions [Line Items]
Total revenue	22,346
Operating expenses	9,098
Selling, general and administrative expenses	6,032
Depreciation, amortization and (gain) loss on disposal of assets, net	5,168
Total costs and expenses	24,772
Income from operations	(2,426)
Other income, net	(178)
Total other (income) expenses	178
Income (loss) before income taxes	(2,248)
Income tax provision (benefit)	(936)
Net income (loss)	(1,312)
Other comprehensive income (loss):
Change in foreign currency translation adjustment	2,708
Total comprehensive income	1,396
Eliminations
Condensed Statement Of Income Captions [Line Items]
Income from equity investment	8,728
Total other (income) expenses	8,728
Income (loss) before income taxes	(8,728)
Net income (loss)	(8,728)
Other comprehensive income (loss):
Total comprehensive income	(8,728)
Service Revenue
Condensed Statement Of Income Captions [Line Items]
Total revenue	161,134	89,763
Cost of revenue	3,779	880
Service Revenue | VM Consolidated Inc. (Guarantor Subsidiary)
Condensed Statement Of Income Captions [Line Items]
Total revenue	143,164
Cost of revenue	2,475
Service Revenue | Non-guarantor Subsidiaries
Condensed Statement Of Income Captions [Line Items]
Total revenue	17,970
Cost of revenue	1,304
Product Sales
Condensed Statement Of Income Captions [Line Items]
Total revenue	9,251	95
Cost of revenue	5,995	$ 27
Product Sales | VM Consolidated Inc. (Guarantor Subsidiary)
Condensed Statement Of Income Captions [Line Items]
Total revenue	4,875
Cost of revenue	2,825
Product Sales | Non-guarantor Subsidiaries
Condensed Statement Of Income Captions [Line Items]
Total revenue	4,376
Cost of revenue	$ 3,170