Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Property and Equipment
Property and equipment are recognized at cost less accumulated depreciation. Depreciation is computed using the straight-line method based on estimated useful lives of the related assets as follows:
Buildings
39 years
Furniture and office equipment
3 - 7 years
Software
3 years
Vehicles
5 years
Property and equipment, net, consist of the following (in thousands):
 
As of December 31,
 
2014
 
2013
Land
$
7,091

 
$
7,091

Buildings
29,540

 
28,916

Furniture and office equipment
81,030

 
84,852

Software
12,454

 
10,075

Leasehold improvements
21,096

 
24,360

Vehicles
147

 
147

Total property and equipment
151,358

 
155,441

Less accumulated depreciation and amortization
(73,139
)
 
(64,016
)
Total property and equipment, net
$
78,219

 
$
91,425
Components of Other Comprehensive Loss and the Related Tax Effects
The following table summarizes the components of other comprehensive gain (loss) and the related tax effects for the years ended December 31, 2014, 2013 and 2012 (in thousands):
 
December 31, 2014
 
Before-Tax Amount
 
Tax Effect
 
Net-of-Tax Amount
Unrealized losses on investments
$
(359
)
 
$
136

 
$
(223
)
 
 
 
 
 
 
 
December 31, 2013
 
Before-Tax Amount
 
Tax Effect
 
Net-of-Tax Amount
Unrealized losses on investments
$
(280
)
 
$
106

 
$
(174
)
 
 
 
 
 
 
 
December 31, 2012
 
Before-Tax Amount
 
Tax Effect
 
Net-of-Tax Amount
Unrealized gains on investments
$
1,300

 
$
(483
)
 
817