XML 26 R15.htm IDEA: XBRL DOCUMENT v3.5.0.2
Investments (Tables)
 9 Months Ended
Sep. 30, 2016
Investments [Abstract]  
Available-for-sale Securities
Available-for-sale marketable securities as of September 30, 2016 and December 31, 2015 were as follows (in thousands):



 
September 30, 2016
 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
   Government-sponsored enterprises
 
$
37,645
  
$
10
  
$
-
  
$
37,655
 
   Corporate debt securities
  
166,560
   
93
   
(85
)
  
166,568
 
Total
 
$
204,205
  
$
103
  
$
(85
)
 
$
204,223
 



  
December 31, 2015
 
  
Amortized
Cost
  
Gross
Unrealized
Gains
  
Gross
Unrealized
Losses
  
Fair
Value
 
U.S. Treasury securities
 
$
9,354
  
$
1
  
$
(6
)
 
$
9,349
 
Government-sponsored enterprises
  
22,055
   
1
   
(9
)
  
22,047
 
Corporate debt securities
  
111,473
   
42
   
(34
)
  
111,481
 
Total
 
$
142,882
  
$
44
  
$
(49
)
 
$
142,877