Warranty Reserves and Cost Per Hour Reserves (Tables)
 12 Months Ended
Dec. 31, 2014
Guarantees [Abstract]  
Summary of Warranty Reserves Related to Sales of Aircranes
A summary of the warranty reserves related to sales of Aircranes consisted of the following (in thousands):
 
Year Ended December 31, 2014
 
Year Ended December 31, 2013
 
Year Ended December 31, 2012
Beginning balance
$
—

 
$
—

 
$
1,015

Increases to reserves
—

 
—

 
—

Warranty provided or expired
—

 
—

 
(1,015
)
Ending balance
$
—

 
$
—

 
$
—
Schedule of CPH Reserves
A summary of the CPH reserves is as follows (in thousands):
 
Year Ended December 31, 2014
 
Year Ended December 31, 2013
 
Year Ended December 31, 2012
Beginning balance
$
511

 
$
3,569

 
$
2,770

Increases to reserves
—

 
747

 
5,282

Warranty provided or expired
(511
)
 
(3,805
)
 
(4,483
)
Ending balance
$
—

 
$
511

 
$
3,569