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Discontinued Operations	9 Months Ended
Discontinued Operations	Sep. 30, 2017
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	10. DISCONTINUED OPERATIONS The Company recorded no after tax income or loss from discontinued operations in the nine months of 2017. The Company recorded income of $4.3 million in the first nine months of 2016 primarily as a result of payments received from settlement agreements with insurers, as well as with Crane Co., in connection with the declaratory action filed in the United States District court for the Eastern District of Missouri.