Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Net income	$ 108.5	$ 94.0	$ 61.6
Adjustments to reconcile net income to net cash provided by operating activities:
Net gain on discontinued operations and disposal	(0.1)	(0.3)	(1.1)
Depreciation and amortization	41.5	36.4	30.0
Deferred financing costs	0.3	0.4	0.3
Deferred gain	0.0	(1.9)	(2.0)
Stock-based compensation expense	8.8	7.6	4.6
Pension settlement charges	0.0	0.0	6.1
Pension expense, net of funding	(0.1)	(7.8)	(5.2)
Changes in fair value of contingent consideration and deferred payment	1.0	1.1	1.0
Payments for acquisition-related activity	(3.1)	0.0	0.0
Deferred income taxes, including change in valuation allowance	3.3	(5.6)	(14.9)
Changes in operating assets and liabilities:
Accounts receivable	(4.7)	(7.9)	(11.1)
Inventories	(10.4)	(22.6)	9.4
Prepaid expenses and other current assets	(2.2)	(1.0)	3.9
Rental equipment	(35.5)	(30.6)	(15.7)
Accounts payable	(6.6)	15.6	(5.2)
Customer deposits	(5.1)	3.7	1.5
Accrued liabilities	2.8	8.2	8.0
Income taxes	1.3	2.2	1.6
Other	3.7	1.3	0.7
Net cash provided by continuing operating activities	103.4	92.8	73.5
Net cash used for discontinued operating activities	(0.3)	0.0	(0.7)
Net cash provided by operating activities	103.1	92.8	72.8
Investing activities:
Purchases of properties and equipment	(35.4)	(14.1)	(8.0)
(Payments for) proceeds from acquisitions, net of cash acquired	(49.6)	3.0	(269.2)
Other, net	0.6	0.1	0.1
Net cash used for continuing investing activities	(84.4)	(11.0)	(277.1)
Net cash used for discontinued investing activities	0.0	0.0	(1.1)
Net cash used for investing activities	(84.4)	(11.0)	(278.2)
Financing activities:
Increase (decrease) in revolving lines of credit, net	7.4	(62.1)	209.1
Payments of debt financing fees	(1.0)	0.0	(0.2)
Purchases of treasury stock	(1.0)	(1.2)	0.0
Redemptions of common stock to satisfy withholding taxes related to stock-based compensation	(2.1)	(0.5)	(2.9)
Payments for acquisition-related activity	(10.3)	0.0	0.0
Cash dividends paid to stockholders	(19.3)	(18.7)	(16.8)
Proceeds from stock compensation activity	1.7	1.3	1.6
Other, net	0.0	0.0	(0.1)
Net cash (used for) provided by financing activities	(24.6)	(81.2)	190.7
Effects of foreign exchange rate changes on cash and cash equivalents	0.1	(0.7)	1.5
Decrease in cash and cash equivalents	(5.8)	(0.1)	(13.2)
Cash and cash equivalents at beginning of year	37.4	37.5	50.7
Cash and cash equivalents at end of year	$ 31.6	$ 37.4	$ 37.5