$ 19.6

$ 24.3

Remaining performance obligation, description of practical expedient

In accordance with the practical expedient provided in ASC Topic 606, performance obligations that are billed and recognized as they are delivered, primarily professional services contracts that are on a time and materials basis, are excluded from the transaction price for remaining performance obligations disclosed above.

Revenue [Line Items]

Number of employees generating revenue from recurring fees | Employee

20

Revenue [Line Items]

Float revenue

$ 19.6

$ 24.3

Revenue - Additional Information (Detail) $ in Millions	3 Months Ended
Revenue - Additional Information (Detail) $ in Millions	Mar. 31, 2020 USD ($) Cloudoffering Employee Service	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Revenue [Line Items]
Float revenue	$ 19.6	$ 24.3
Contract asset	$ 47.3		$ 43.2
Remaining performance obligation, description of practical expedient	In accordance with the practical expedient provided in ASC Topic 606, performance obligations that are billed and recognized as they are delivered, primarily professional services contracts that are on a time and materials basis, are excluded from the transaction price for remaining performance obligations disclosed above.
Cloud Revenue [Member]
Revenue [Line Items]
Number of cloud offering delivering solution \| Cloudoffering	2
Powerpay [Member] \| Maximum [Member]
Revenue [Line Items]
Number of employees generating revenue from recurring fees \| Employee	20
Bureau Revenue [Member]
Revenue [Line Items]
Number of primary service lines delivering solutions \| Service	3
Recurring Services [Member]
Revenue [Line Items]
Float revenue	$ 19.6	$ 24.3