Information on Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013 Segment	Dec. 31, 2013 Segment	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Number Of Reportable Segments	2	2
Revenues		$ 1,091,566	$ 928,780	$ 865,078
Operating profit		123,201	107,131	101,579
Assets		2,123,673	1,868,596	1,440,365
Depreciation and amortization		65,052	57,360	58,904
Capital expenditures		57,304	37,787	37,082
Interest expense		13,090	12,238	10,271
Other expense (income), net		2,537	2,631	333
Income from continuing operations before income taxes		107,574	92,262	90,975
General Electric [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percent		21.00%	23.00%	26.00%
Aerospace [Member]
Segment Reporting Information [Line Items]
Revenues		404,000	390,500	382,500
Operating profit		51,300	57,900	55,700
Assets		567,100	533,500	544,900
Depreciation and amortization		23,200	21,200	24,200
Capital expenditures		23,800	8,600	13,500
Industrial [Member]
Segment Reporting Information [Line Items]
Revenues		687,600	538,300	482,600
Operating profit		71,900	49,300	45,800
Assets		1,410,400	907,100	483,000
Depreciation and amortization		38,400	24,400	19,300
Capital expenditures		31,300	24,300	18,700
Other [Member]
Segment Reporting Information [Line Items]
Revenues		0	0	0
Operating profit		0	0	0
Assets		146,200	428,000	412,500
Depreciation and amortization		3,500	11,800	15,400
Capital expenditures		$ 2,200	$ 4,900	$ 4,900