Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Total revenue	$ 192.6	$ 196.3	$ 415.3	$ 400.0
Cost of revenue:
Recurring services	49.3	48.7	101.5	99.6
Professional services and other	37.9	34.2	80.5	69.5
Product development and management	17.0	16.4	34.6	31.6
Depreciation and amortization	9.8	9.0	19.6	17.7
Total cost of revenue	114.0	108.3	236.2	218.4
Gross profit	78.6	88.0	179.1	181.6
Selling, general, and administrative	74.6	69.3	148.8	135.5
Operating profit	4.0	18.7	30.3	46.1
Interest expense, net	6.6	8.5	13.5	17.4
Other expense, net	0.3	1.5	2.9	3.1
(Loss) income before income taxes	(2.9)	8.7	13.9	25.6
Income tax (benefit) expense	(8.4)	2.4	(0.2)	8.1
Net income	$ 5.5	$ 6.3	$ 14.1	$ 17.5
Net income per share:
Basic	$ 0.04	$ 0.04	$ 0.10	$ 0.12
Diluted	$ 0.04	$ 0.04	$ 0.09	$ 0.12
Weighted-average shares outstanding:
Basic	145,593,019	141,149,009	145,119,172	140,651,902
Diluted	151,444,901	148,331,846	151,321,093	147,761,174
Recurring Services [Member]
Revenue:
Total revenue	$ 159.1	$ 163.5	$ 340.6	$ 336.3
Professional Services and Other [Member]
Revenue:
Total revenue	$ 33.5	$ 32.8	$ 74.7	$ 63.7