Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories at December 31 consisted of the following:

	2017			2016
Long-term contracts in progress		$13,889			$12,801
Commercial aircraft programs	52,861			52,048
Commercial spare parts, used aircraft, general stock materials and other	5,688			5,446
Inventory before advances and progress billings	72,438			70,295
Less advances and progress billings	(28,094		)	(27,096		)
Total		$44,344			$43,199