Consolidated Statements Of Cash Flows $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Operating activities
Net income	$ 61.6	$ 43.8	$ 63.5
Adjustments to reconcile net income to net cash provided by operating activities:
Net (gain) loss on discontinued operations and disposal	(1.1)	(4.4)	2.3
Depreciation and amortization	30.0	19.1	12.3
Deferred financing costs	0.3	0.6	0.4
Deferred gain	(2.0)	(1.9)	(1.9)
Stock-based compensation expense	4.6	4.8	6.8
Excess tax benefit from stock-based compensation	0.0	0.0	(1.6)
Pension settlement charges	6.1	0.0	0.0
Pension expense, net of funding	(5.2)	(3.7)	(3.8)
Changes in fair value of contingent consideration and deferred payment	1.0	0.5	0.0
Deferred income taxes, including change in valuation allowance	(14.9)	7.9	25.9
Changes in operating assets and liabilities, net of effects of discontinued operations:
Accounts receivable	(11.1)	(8.0)	(0.3)
Inventories	9.4	(2.3)	(3.3)
Rental equipment	(15.7)	(6.9)	0.0
Prepaid expenses and other current assets	3.9	1.6	1.0
Accounts payable	(5.2)	(13.9)	(3.1)
Accrued liabilities	8.0	(7.4)	(7.2)
Income taxes	1.6	(4.4)	(1.5)
Other	2.2	1.3	1.6
Net cash provided by continuing operating activities	73.5	26.7	91.1
Net cash (used for) provided by discontinued operating activities	(0.7)	(2.0)	6.1
Net cash provided by operating activities	72.8	24.7	97.2
Investing activities:
Purchases of properties and equipment	(8.0)	(6.1)	(9.6)
Payments for acquisitions, net of cash acquired	(269.2)	(102.6)	0.0
Proceeds from escrow receivable	0.0	0.0	4.0
Cash collected from (provided to) customer	0.0	6.0	(6.0)
Other, net	0.1	(0.3)	0.1
Net cash used for continuing investing activities	(277.1)	(103.0)	(11.5)
Net cash (used for) provided by discontinued investing activities	(1.1)	86.2	(1.3)
Net cash used for investing activities	(278.2)	(16.8)	(12.8)
Financing activities:
Increase in revolving lines of credit, net	209.1	64.8	0.0
Payments on long-term borrowings	0.0	(43.4)	(5.8)
Payments of debt financing fees	(0.2)	(1.1)	0.0
Purchases of treasury stock	0.0	(37.8)	(10.6)
Redemptions of common stock to satisfy withholding taxes related to stock-based compensation	(2.9)	(2.7)	(3.2)
Cash dividends paid to stockholders	(16.8)	(16.9)	(15.6)
Proceeds from stock compensation activity	1.6	0.5	1.0
Excess tax benefit from stock-based compensation	0.0	0.0	1.6
Other, net	(0.1)	(0.5)	(0.4)
Net cash provided by (used for) continuing financing activities	190.7	(37.1)	(33.0)
Net cash provided by discontinued financing activities	0.0	0.7	0.0
Net cash provided by (used for) financing activities	190.7	(36.4)	(33.0)
Effects of foreign exchange rate changes on cash and cash equivalents	1.5	(1.8)	(0.8)
(Decrease) increase in cash and cash equivalents	(13.2)	(30.3)	50.6
Cash and cash equivalents at beginning of year	50.7	81.0	30.4
Cash and cash equivalents at end of year	37.5	50.7	81.0
Less: Cash and cash equivalents of discontinued operations at end of year	0.0	0.0	(5.0)
Cash and cash equivalents of continuing operations at end of year	$ 37.5	$ 50.7	$ 76.0