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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Components of Property and Equipment
Property and equipment consist of the following:

 
As of December 31,
 
2012
 
2011
 
(in thousands)
Aircraft
$
17,844

 
$
17,651

Equipment
18,175

 
16,306

Furniture and fixtures
7,578

 
8,131

Leasehold improvements
25,567

 
24,100

 
69,164

 
66,188

Less accumulated depreciation and amortization
(54,760
)
 
(50,193
)
Total property and equipment, net
$
14,404

 
$
15,995