Goodwill and Intangible Assets, Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2014	Sep. 30, 2015
Goodwill [Line Items]
Goodwill, Gross	$ 192,694	$ 192,694
Goodwill, Impaired, Accumulated Impairment Loss	(105,910)	(105,910)
Goodwill acquired	86,784	86,784
Engineering Services [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss	26,439
Aerostructures [Member]
Goodwill [Line Items]
Goodwill, Gross	141,953	141,953
Goodwill, Impaired, Accumulated Impairment Loss	(79,471)	(79,471)
Goodwill acquired	62,482	62,482
Engineering Services [Member]
Goodwill [Line Items]
Goodwill, Gross	50,741	50,741
Goodwill, Impaired, Accumulated Impairment Loss	(26,439)	(26,439)
Goodwill acquired	$ 24,302	$ 24,302