Information on Business Segments Details 1 (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Assets	$ 2,078,643	$ 2,073,885
Aerospace [Member]
Segment Reporting Information [Line Items]
Assets	655,806	655,042
Industrial [Member]
Segment Reporting Information [Line Items]
Assets	1,251,669	1,281,974
Other [Member]
Segment Reporting Information [Line Items]
Assets	$ 171,168	$ 136,869