Aircraft Support Parts, net (Tables)
 12 Months Ended
Dec. 31, 2014
Inventory Disclosure [Abstract]  
Schedule of Aircraft Support Parts, Net
Aircraft support parts consisted of the following (in thousands):
 
 
December 31, 2014
 
December 31, 2013
Aircraft parts
$
124,629

 
$
115,400

Work-in-process
18,604

 
17,296

Less: Excess and obsolete reserve
(5,640
)
 
(6,000
)

$
137,593

 
$
126,696
Rollforward of Inventory Reserve
Following are the changes in the excess and obsolete reserve during the years ended (in thousands):


Year Ended 
 December 31, 2014
 
Year Ended 
 December 31, 2013
 
Year Ended 
 December 31, 2012
Balance at beginning of period
$
(6,000
)
 
$
(6,060
)
 
$
(5,050
)
Increase in reserves
(117
)
 
(585
)
 
(1,662
)
Amounts written off
477

 
645

 
652

Balance at end of period
$
(5,640
)
 
$
(6,000
)
 
$
(6,060
)