SEGMENT INFORMATION (Detail) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment				3
Net sales		$ 545,194	$ 569,198	$ 1,091,393	$ 1,112,157
Operating income (expense)		65,442	72,159	138,277	133,193
Identifiable assets		3,112,611		3,112,611		$ 3,399,511
Commercial Industrial [Member]
Segment Reporting Information [Line Items]
Net sales		305,074	315,114	604,972	617,131
Operating income (expense)		45,253	45,750	88,542	84,246
Identifiable assets		1,561,489		1,561,489		1,534,882
Defense [Member]
Segment Reporting Information [Line Items]
Net sales		120,149	118,889	234,501	232,042
Operating income (expense)		24,391	18,002	42,418	33,786
Identifiable assets		806,804		806,804		837,891
Power [Member]
Segment Reporting Information [Line Items]
Net sales		121,661	137,320	256,796	267,595
Operating income (expense)		1,454	14,865	20,966	29,140
Identifiable assets		581,061		581,061		588,366
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		(1,690)	(2,125)	(4,876)	(4,611)
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Operating income (expense)	[1]	(5,656)	$ (6,458)	(13,649)	$ (13,979)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Identifiable assets		148,496		148,496		291,025
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Segment Reporting Information [Line Items]
Identifiable assets		$ 14,761		$ 14,761		$ 147,347

[1] Corporate and eliminations includes pension expense, environmental remediation and administrative expenses, legal, foreign currency transactional gains and losses, and other expenses.