Commitments and Contingencies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) claims policies	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jan. 31, 2014	Dec. 31, 2003
Operating leases
Rental expense	$ 5.2	$ 3.5	$ 4.2
Due in 2017	5.6
Due in 2018	3.7
Due in 2019	1.4
Due in 2020	0.8
Due in 2021 and thereafter	$ 0.3
Asbestos Litigation [Member]
Operating leases
Total resolved claims, by means of settlement or dismissal | claims	37,489
Total cost of resolution	$ 10.2
Resolution costs paid by insurance carrier	100.00%
Number of policies | policies	23
Confirmed insurance coverage	$ 140.0
Asbestos Litigation [Member] | Brandon Drying Fabrics, Inc. [Member]
Operating leases
Total resolved claims, by means of settlement or dismissal | claims	9,900
Total cost of resolution	$ 0.2
Resolution costs paid by insurance carrier				100.00%	88.20%
Percent of resolution costs paid by entity					11.80%
Asbestos Litigation [Member] | Policies Exhausted [Member]
Operating leases
Number of policies | policies	2
Asbestos Litigation [Member] | Other Available Policies [Member]
Operating leases
Confirmed insurance coverage	$ 2.5