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Business Segments and Major Customers - Reconciliation of Segment Profit (loss) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Segment profit (loss) $ 5,374 $ 2,851
Interest income 15 19
Interest expense (7,248) (3,920)
Depreciation and amortization (15,687) (13,845)
Amortization of deferred airborne lease incentives 2,597 1,572
Stock compensation expense (1,604) (878)
Other expense (40) (1)
Loss before income taxes (16,593) (14,202)
CA-NA [Member]
   
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Segment profit (loss) 5,804 (385)
CA-ROW [Member]
   
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Segment profit (loss) (16,893) (6,220)
BA [Member]
   
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Segment profit (loss) $ 16,463 $ 9,456