Special Charges (Special Charges, Net) (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 24, 2014	Dec. 31, 2016	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				$ 8,975	$ 4,634	$ 5,246
Brazil closure				2,922
Settlement		$ (4,500)		(4,457)
Customer settlement	$ (2,200)
Other Nonrecurring (Income) Expense				8,196	9,720
2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						(210)
Other Nonrecurring (Income) Expense						7,492
CFO Retirement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense						300
Customer Related Settlement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement			$ (6,200)
Customer settlement						6,232
Employee Severance [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						(2,243)
Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				817	919
Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries					(1,044)
Divestiture [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net			3,400			3,413
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries				4,493	(119)	699
Brazil closure					9,425
Total special charges, net					420
Energy Segment [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				3,185	2,903	1,963
Brazil closure				2,920
Settlement			$ (200)	0
Other Nonrecurring (Income) Expense				2,920	8,648
Energy Segment [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						(210)
Other Nonrecurring (Income) Expense						9,005
Energy Segment [Member] | CFO Retirement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense						0
Energy Segment [Member] | Customer Related Settlement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Customer settlement						6,232
Energy Segment [Member] | Employee Severance [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						0
Energy Segment [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				0	0
Energy Segment [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries					(2)
Energy Segment [Member] | Divestiture [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net						2,983
Energy Segment [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries				792	(376)	447
Brazil closure				2,900	8,650
Total special charges, net					0
Advanced Flow Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				5,790	1,731	2,966
Brazil closure				0
Settlement				0
Other Nonrecurring (Income) Expense				(161)	(123)
Advanced Flow Solutions [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						0
Other Nonrecurring (Income) Expense						(1,813)
Advanced Flow Solutions [Member] | CFO Retirement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense						0
Advanced Flow Solutions [Member] | Customer Related Settlement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Customer settlement						0
Advanced Flow Solutions [Member] | Employee Severance [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						(2,243)
Advanced Flow Solutions [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				(161)	919
Advanced Flow Solutions [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries					(1,042)
Advanced Flow Solutions [Member] | Divestiture [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net						430
Advanced Flow Solutions [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries				3,701	257	252
Brazil closure					0
Total special charges, net					0
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				0	0	317
Brazil closure				2
Settlement				(4,457)
Other Nonrecurring (Income) Expense				5,437	1,195
Corporate [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						0
Other Nonrecurring (Income) Expense						300
Corporate [Member] | CFO Retirement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense						300
Corporate [Member] | Customer Related Settlement [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Customer settlement						0
Corporate [Member] | Employee Severance [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Settlement						0
Corporate [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				978	0
Corporate [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries					0
Corporate [Member] | Divestiture [Member] | 2014 Announced Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net						0
Corporate [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries				$ 0	0	$ 0
Brazil closure					775
Total special charges, net					$ 420