Contingencies (Narrative) (Details) - Asbestos Litigation [Member] $ in Thousands	Mar. 31, 2018 USD ($) claims
Loss Contingencies [Line Items]
Total resolved claims, by means of settlement or dismissal | claims	37,690
Total cost of resolution | $	$ 10,300
Resolution costs paid by insurance carrier	100.00%
Confirmed insurance coverage | $	$ 140,000
Brandon Drying Fabrics, Inc. [Member]
Loss Contingencies [Line Items]
Total resolved claims, by means of settlement or dismissal | claims	7,707
Resolution costs paid by insurance carrier	100.00%