Contingencies (Narrative) (Details) - Asbestos Litigation [Member] $ in Thousands	Mar. 31, 2017 USD ($) claims policies	Jan. 31, 2014	Dec. 31, 2003
Loss Contingencies [Line Items]
Total resolved claims, by means of settlement or dismissal | claims	3,752
Total cost of resolution	$ 2,000
Resolution costs paid by insurance carrier	100.00%
Number of policies | policies	0
Confirmed insurance coverage	$ 140,000
Policies Exhausted [Member]
Loss Contingencies [Line Items]
Number of policies | policies	0
Other Available Policies [Member]
Loss Contingencies [Line Items]
Confirmed insurance coverage	$ 0
Brandon Drying Fabrics, Inc. [Member]
Loss Contingencies [Line Items]
Total resolved claims, by means of settlement or dismissal | claims	9,900
Total cost of resolution	$ 200
Resolution costs paid by insurance carrier		100.00%	88.20%
Percent of resolution costs paid by entity			11.80%