Aircraft Support Parts, net - Rollforward of Inventory Reserve (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Inventory Reserve [Roll Forward]      
Beginning Balance $ (6,000) $ (6,060) $ (5,050)
Increase in reserves (117) (585) (1,662)
Amounts written off 477 645 652
Ending Balance $ (5,640) $ (6,000) $ (6,060)