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Note 6 - Marketable Securities
12 Months Ended
Dec. 31, 2011
Marketable Securities [Text Block]
Note 6.     Marketable Securities

The Company’s investment policy focuses on three objectives:  to preserve capital, to meet liquidity requirements, and to maximize total return. The Company’s investment policy establishes minimum ratings for each classification of investments when purchased and investment concentration is limited to minimize risk.  The policy also limits the final maturity on any investment and the overall duration of the portfolio.  Given the overall market conditions, the Company regularly reviews its investment portfolio to ensure adherence to its investment policy and to monitor individual investments for risk analysis and proper valuation.

The Company’s portfolio of marketable securities at December 31, 2011 was as follows:

         
Gross
   
Gross
   
Estimated
 
         
Unrealized
   
Unrealized
   
Fair
 
   
Cost
   
Gains
   
Losses
   
Value
 
   
(in thousands)
 
Available-for-sale securities:
                       
Short-term deposits
  $ 3,029     $ -     $ -     $ 3,029  
United States government securities
    309,189       593       (3 )     309,779  
Government agencies
    3,505       21       -       3,526  
Corporate obligations
    1,513       8       -       1,521  
Total available-for-sale securities
    317,236       622       (3 )     317,855  
Amounts classified as cash equivalents
    (2,914 )     -       -       (2,914 )
Amounts classified as marketable securities
  $ 314,322     $ 622     $ (3 )   $ 314,941  

The Company’s portfolio of marketable securities at December 31, 2010 was as follows:

         
Gross
   
Gross
   
Estimated
 
         
Unrealized
   
Unrealized
   
Fair
 
   
Cost
   
Gains
   
Losses
   
Value
 
   
(in thousands)
 
Available-for-sale securities:
                       
Short-term deposits
  $ 5,737     $ -     $ -     $ 5,737  
United States government securities
    57,379       409       (32 )     57,756  
Government agencies
    53,065       308       (51 )     53,322  
Mortgage-backed securities
    32,161       141       (36 )     32,266  
State and municipalities
    4,021       2       (39 )     3,984  
Corporate obligations
    183,971       1,122       (117 )     184,976  
Asset-backed securities
    492       17       -       509  
Total available-for-sale securities
    336,826       1,999       (275 )     338,550  
Amounts classified as cash equivalents
    (24,415 )     -       -       (24,415 )
Amounts classified as marketable securities
  $ 312,411     $ 1,999     $ (275 )   $ 314,135  

Sales of marketable securities resulted in gross realized gains of $2.0 million, $1.1 million and $0.7 million for fiscal 2011, the Transition Period and fiscal 2010, respectively. Sales of marketable securities resulted in gross realized losses of $0.3 million, $0.5 million and $0.2 million for fiscal 2011, the Transition Period and fiscal 2010, respectively.

The following table summarizes the fair value and gross unrealized losses of the Company’s available-for-sale marketable securities, aggregated by type of investment instrument and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2011:

    Less than 12 Months     12 Months or Greater     Total  
    Fair
Value
    Gross
Unrealized
Losses
    Fair
Value
    Gross
Unrealized
Losses
    Fair
Value
    Gross
Unrealized
Losses
 
    (in thousands)  
U.S. government securities
  $ 15,186     $ (3 )   $ -     $ -     $ 15,186     $ (3 )

The following table summarizes the fair value and gross unrealized losses of the Company’s available-for-sale marketable securities, aggregated by type of investment instrument and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2010:

   
Less than 12 Months
   
12 Months or Greater
   
Total
 
         
Gross
         
Gross
         
Gross
 
   
Fair
   
Unrealized
   
Fair
   
Unrealized
   
Fair
   
Unrealized
 
   
Value
   
Losses
   
Value
   
Losses
   
Value
   
Losses
 
   
(in thousands)
 
                                     
 U.S. government securities
  $ 12,793     $ (32 )   $ -     $ -     $ 12,793     $ (32 )
 Government agencies
    17,977       (51 )     -       -       17,977       (51 )
 Mortgage-backed securities
    11,019       (36 )     -       -       11,019       (36 )
 State and municipalities
    2,843       (39 )     -       -       2,843       (39 )
 Corporate oligations
    36,815       (117 )     -       -       36,815       (117 )
 Total
  $ 81,447     $ (275 )   $ -     $ -     $ 81,447     $ (275 )

The Company’s investment portfolio consists of both corporate and government securities that generally mature within three years. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As yields increase, those securities purchased with a lower yield-at-cost show a mark-to-market unrealized loss. All unrealized losses are due to changes in interest rates and bond yields. The Company has considered all available evidence and determined that the marketable securities in which unrealized losses were recorded in the Transition Period and fiscal years 2011 and 2010 were not deemed to be other-than-temporary. The Company holds its marketable securities as available-for-sale and marks them to market.

The amortized cost and estimated fair value of investments in available-for-sale debt securities at December 31, 2011, by contractual maturity, were as follows:

         
Estimated
 
   
Cost
   
Fair Value
 
   
(in thousands)
 
             
Mature in one year or less
  $ 256,764     $ 257,050  
Mature after one year through three years
    60,473       60,805  
Total
  $ 317,237     $ 317,855