Total   $ 138,982 $ 65,208 $ 15,631 
Y E A R - E N D  2 0 0 2
Held-to-maturity securities      
Municipal bonds $ 82,300 $ 1,900 $ 5,396
U.S. government securities  –  –  11,995
Certificates of deposit  –  –  400
Available-for-sale securities      
U.S. treasury notes  –  3,478  –
Money market preferred stock  –  11,000  –
Asset- and mortgage-backed securities –  –  7,098
Cash and money market accounts  56,865  –  –
 Total   $ 139,165 $ 16,378 $ 24,889
The 2001 cash and cash equivalents generally consisted of cash and 
commercial paper.
R E C E I V A B L E S
Accounts receivable are presented net of an allowance for doubtful 
accounts of $10,859,000, $9,570,000, and $16,576,000 for 2003, 
2002, and 2001, respectively. The allowance for receivables is devel -
oped based on several factors including overall customer credit quality, 
historical write-off experience and specific account analyses that 
N O T E S  T O  C O N S O L I D A T E D  F I N A N C I A L  S T A T E M E N T S