Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net income	$ 56.4	$ 44.5	$ 26.0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	18.8	21.7	34.2
Net accretion of acquired lease contracts	(1.1)	(2.2)	(1.8)
Loss (gain) on sale of equipment	0.0	0.2	(0.3)
Net equity in (earnings) losses of unconsolidated entities (net of distributions)	(0.4)	(8.5)	0.5
Gain on sale of equity method investment in unconsolidated entity	(10.1)	0.0	0.0
Net gain on sale of a business	0.0	(0.1)	0.0
Amortization of debt issuance costs	0.7	0.7	0.8
Amortization of original discount on borrowings	0.5	0.5	0.5
Non-cash stock-based compensation	3.1	3.1	3.4
Provision for losses on accounts receivable	1.5	0.7	0.4
Deferred income taxes	1.3	1.8	(2.1)
Changes in operating assets and liabilities
Notes and accounts receivable	(16.7)	(2.6)	(15.9)
Prepaid assets	0.1	(1.8)	(1.0)
Other assets	2.1	(2.3)	(1.0)
Accounts payable	0.8	(7.2)	14.8
Accrued liabilities	13.9	(3.3)	1.2
Net cash provided by operating activities	70.9	45.2	59.7
Investing activities
Purchase of leasehold improvements and equipment	(8.9)	(6.8)	(13.0)
Proceeds from sale of equipment and contract terminations	0.2	0.8	3.0
Cash received from sale of a business, net	0.0	0.6	0.0
Proceeds from sale of equity method investee's sale of assets	19.3	8.4	0.0
Cost of contracts purchased	(1.1)	(0.7)	(3.8)
Acquisition of business, net of cash acquired	(277.9)	0.0	0.0
Net cash (used in) provided by investing activities	(268.4)	2.3	(13.8)
Financing activities
Payments on credit facility revolver	(186.3)	(410.1)	(401.0)
Proceeds from credit facility revolver	333.5	386.6	385.0
Proceeds from credit facility term loan	225.0	0.0	0.0
Payments on credit facility term loan	(150.0)	(20.0)	(15.0)
Payments of debt issuance costs and original discount on borrowings	(3.2)	0.0	0.0
Payments on other long-term borrowings	(0.5)	(0.5)	(0.3)
Distribution to noncontrolling interest	(3.3)	(3.2)	(3.3)
Repurchase of common stock	0.0	0.0	(7.5)
Net cash provided by (used in) financing activities	215.2	(47.2)	(42.1)
Effect of exchange rate changes on cash and cash equivalents	(0.6)	0.3	(0.3)
Increase in cash and cash equivalents	17.1	0.6	3.5
Cash and cash equivalents at beginning of year	22.8	22.2	18.7
Cash and cash equivalents at end of year	39.9	22.8	22.2
Cash paid during the period for
Interest	8.5	8.0	9.2
Income taxes, net	15.3	26.5	17.6
Non cash transactions
Capital lease obligations incurred to acquire equipment	$ 13.0	$ 1.5	$ 0.0