For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Significant Accounting Policies - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026 USD ($) Customer	Jun. 30, 2025 USD ($) Customer	Jun. 30, 2026 USD ($) Customer	Jun. 30, 2025 USD ($) Customer	Dec. 31, 2025 USD ($) Customer
Summary Of Significant Accounting Principles And Policies [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 199.6		$ 199.6
Revenue remaining performance obligation in the next twelve months	82.7		82.7
Parking Solutions
Summary Of Significant Accounting Principles And Policies [Line Items]
Deferred Revenue	15.1		15.1		$ 20.1
Contract with Customer, Revenue Recognized	6.5	$ 7.8	15.6	$ 17.8
Government Solutions
Summary Of Significant Accounting Principles And Policies [Line Items]
Deferred Revenue	9.4		9.4		$ 8.9
Contract with Customer, Revenue Recognized	1.4	$ 1.4	$ 4.7	$ 5.6
Customer Concentration Risk \| Accounts Receivable \| Parking Solutions
Summary Of Significant Accounting Principles And Policies [Line Items]
Number of customers exceeds 10% \| Customer			0		0
Customer Concentration Risk \| Accounts Receivable \| City of New York Department of Transportation
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage			28.50%		31.10%
Customer Concentration Risk \| Accounts Receivable \| Commercial Services
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage			10.00%		10.00%
Number of customers exceeds 10% \| Customer			0		0
Customer Concentration Risk \| Revenue Benchmark
Summary Of Significant Accounting Principles And Policies [Line Items]
Unbilled revenue	$ 33.1		$ 33.1
Customer Concentration Risk \| Revenue Benchmark \| Government Solutions
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage			10.00%
Customer Concentration Risk \| Revenue Benchmark \| Parking Solutions
Summary Of Significant Accounting Principles And Policies [Line Items]
Number of customers exceeds 10% \| Customer	0	0	0	0
Customer Concentration Risk \| Revenue Benchmark \| City of New York Department of Transportation
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage	21.80%	14.70%	18.80%	15.00%
Customer Concentration Risk \| Revenue Benchmark \| Commercial Services \| Government Solutions
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage			10.00%
Customer Concentration Risk \| Revenue Benchmark \| Commercial Services Customer A
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage	11.00%	14.70%	12.00%	15.20%
Customer Concentration Risk \| Revenue Benchmark \| Commercial Services Customer B
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage	12.80%	11.20%	12.40%	11.50%
Customer Concentration Risk \| Revenue Benchmark \| Commercial Services Customer C
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage	10.50%	11.00%	10.30%	10.60%
Customer Concentration Risk \| Revenue Benchmark \| Minimum
Summary Of Significant Accounting Principles And Policies [Line Items]
Concentration risk percentage			10.00%