Inventories Capitalized Contract Cost (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Inventory [Line Items]
Total capitalized contract cost	$ 36,872	$ 36,876
Military [Member]
Inventory [Line Items]
Gross capitalized contract costs	5,000	4,943
Corporate and Regional Aircraft [Member]
Inventory [Line Items]
Gross capitalized contract costs	21,179	21,081
Large Commercial Aircraft [Member]
Inventory [Line Items]
Gross capitalized contract costs	$ 10,693	$ 10,852