Acquisitions - Proforma (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue
As reported	$ 344.5	$ 267.1
Net Earnings
As reported	$ 17.6	$ 5.2
Net earnings from continuing operations per share
As Reported Basic (in dollars per share)	$ 0.58	$ 0.17
As Reported Fully Diluted (in dollars per share)	$ 0.57	$ 0.17
Cooling and Applied Technologies, Inc. and Tipper Tie, Inc.
Revenue
Pro forma	$ 344.5	$ 297.7
As reported	344.5	267.1
Net Earnings
Pro forma	17.3	7.4
As reported	$ 17.6	$ 5.2
Net earnings from continuing operations per share
Pro Forma Basic (in dollars per share)	$ 0.58	$ 0.25
Pro Forma Fully Diluted (in dollars per share)	0.57	0.25
As Reported Basic (in dollars per share)	0.59	0.18
As Reported Fully Diluted (in dollars per share)	$ 0.58	$ 0.17