Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of components income before income taxes

arnings before income taxes includes the following components:

	Year Ended December 31,
(millions)	2019		2018		2017
United States	$	69.7	$	74.9	$	70.0
Foreign	1.4		1.1		2.2
Total	$	71.1	$	76.0	$	72.2

Schedule of components of income tax expense (benefit)

The components of income tax expense are as follows:

	Year Ended December 31,
(millions)	2019			2018			2017
Current provision
U.S. federal	$	9.6		$	9.9		$	21.5
Foreign	0.9			1.0			1.0
State	4.7			7.4			3.3
Total current	15.2			18.3			25.8
Deferred provision
U.S. federal	2.9			1.3			2.6
Foreign	(0.1		)	(0.3		)	0.6
State	1.4			0.3			(1.3		)
Total deferred	4.2			1.3			1.9
Income tax expense	$	19.4		$	19.6		$	27.7

Schedule of significant components of the Company's deferred tax assets and liabilities

Components of the Company's deferred tax assets and liabilities are as follows:

	December 31,
(millions)	2019			2018
Deferred tax assets
Net operating loss carry forwards and tax credits	$	20.8		$	21.6
Lease liability	119.5			—
Accrued expenses	15.0			17.4
Accrued compensation	9.2			7.1
Unfavorable acquired lease contracts	—			6.4
Other	1.4			0.9
Total gross deferred tax assets	165.9			53.4
Valuation allowances	(8.3		)	(8.1		)
Total deferred tax assets	157.6			45.3
Deferred tax liabilities
Prepaid expenses	(0.1		)	(0.1		)
Right of use asset	(114.9		)	—
Undistributed foreign earnings	—			(0.1		)
Depreciation and amortization	(0.7		)	1.3
Goodwill amortization	(26.2		)	(22.3		)
Favorable acquired lease contracts	—			(4.6		)
Equity investments in unconsolidated entities	(5.1		)	(4.9		)
Total deferred tax liabilities	(147.0		)	(30.7		)
Net deferred tax asset	$	10.6		$	14.6

Schedule of reconciliation of the Company's reported income tax provision (benefit) to the amount computed by multiplying book income/(loss) before income taxes by the statutory United States federal income tax rate

A reconciliation of the Company's reported income tax provision to the amount computed by multiplying earnings before income taxes by statutory United States federal income tax rate is as follows:

	Year Ended December 31,
(millions)	2019			2018			2017
Tax at statutory rate	$	14.9		$	16.0		$	25.3
Permanent differences	0.8			0.2			0.3
State taxes, net of federal benefit	4.5			6.3			2.5
Effect of foreign tax rates	0.6			0.6			—
Effect of 2017 Tax Act	—			(1.5		)	(1.0		)
Noncontrolling interest	(0.6		)	(0.7		)	(1.1		)
Current year adjustment to deferred taxes	0.8			0.4			1.6
Recognition of tax credits	(1.8		)	(2.7		)	(1.5		)
Other	—			—			1.1
	19.2			18.6			27.2
Change in valuation allowance (1)	0.2			1.0			0.5
Income tax expense	$	19.4		$	19.6		$	27.7
Effective tax rate	27.3		%	25.8		%	38.4		%

(1) The year ended December 31, 2017 includes $1.2 million of additional income tax expense related to an increase in the valuation allowance as a result of the 2017 Tax Act.

Schedule of tax years that remain subject to examination for the Company's major tax jurisdictions

The tax years that remain subject to examination for the Company's major tax jurisdictions as of December 31, 2019 are shown below:

2016 - 2019	United States - federal income tax
2007 - 2019	United States - state and local income tax
2015 - 2019	Foreign - Canada and Puerto Rico