Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net services revenue ($208.4 million and $181.8 million for the three months ended March 31, 2020 and 2019, from related party, respectively)	$ 320.5	$ 275.9
Operating expenses:
Cost of services	253.9	237.2
Selling, general and administrative	25.5	22.5
Other expenses	8.7	8.8
Total operating expenses	288.1	268.5
Operating Income (Loss), Total	32.4	7.4
Net interest expense (income)	3.8	10.2
Income (loss) before income tax provision (benefit)	28.6	(2.8)
Income tax provision (benefit)	10.4	(3.0)
Net income (loss)	$ 18.2	$ 0.2
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.06	$ (0.04)
Diluted (in dollars per share)	$ 0.05	$ (0.04)
Weighted average shares used in calculating net income (loss) per common share:
Basic (in shares)	114,441,043	109,802,632
Diluted (in shares)	169,620,178	109,802,632
Consolidated statements of comprehensive income (loss)
Net income (loss)	$ 18.2	$ 0.2
Other comprehensive income (loss):
Net change on derivatives designated as cash flow hedges, net of tax	(4.4)	0.2
Foreign currency translation adjustments	(2.1)	0.5
Comprehensive income (loss)	11.7	0.9
Basic:
Net income (loss)	18.2	0.2
Less dividends on preferred shares	(5.4)	(5.0)
Less income allocated to preferred shareholders	(6.2)	0.0
Net income (loss) available/allocated to common shareholders - basic	6.6	(4.8)
Diluted:
Net income (loss)	18.2	0.2
Less dividends on preferred shares	(5.4)	(5.0)
Less income allocated to preferred shareholders	(5.0)	0.0
Net income (loss) available/allocated to common shareholders - diluted	$ 7.8	$ (4.8)