Restructuring Activities (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,087,000	$ 2,578,000	$ 8,493,000	$ 8,587,000
Expected future restructuring charges	10,000,000		10,000,000
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance			5,384,000
Provision			8,493,000
Payments			(10,742,000)
Other, including foreign currency			(368,000)
Severance and other restructuring reserve, ending balance	2,767,000		2,767,000
Energy Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	214,000	124,000	1,704,000	1,250,000
Engineered Systems Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	813,000	1,969,000	4,024,000	2,661,000
Fluids Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	457,000	30,000	995,000	356,000
Refrigeration and Food Equipment Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	455,000	10,000	4,320,000
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	603,000	0	1,760,000	0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance			2,918,000
Provision			4,522,000
Payments			(5,623,000)
Other, including foreign currency			(573,000)
Severance and other restructuring reserve, ending balance	1,244,000		1,244,000
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance			2,466,000
Provision			3,971,000
Payments			(5,119,000)
Other, including foreign currency			205,000
Severance and other restructuring reserve, ending balance	1,523,000		1,523,000
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(881,000)	(1,197,000)	1,888,000	3,801,000
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,968,000	$ 3,775,000	$ 6,605,000	$ 4,786,000