Information on Business Segments Details 1 (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Assets	$ 2,076,839	$ 2,061,866
Aerospace [Member]
Segment Reporting Information [Line Items]
Assets	648,851	654,147
Industrial [Member]
Segment Reporting Information [Line Items]
Assets	1,274,423	1,241,206
Other [Member]
Segment Reporting Information [Line Items]
Assets	$ 153,565	$ 166,513