Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Tables)

v2.4.0.6
Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value Disclosures [Abstract]  
Fair Value Measurements By Level For Assets And Liabilities Measured At Fair Value On A Recurring Basis
The following table summarizes fair value measurements by level at September 30, 2012, for assets and liabilities measured at fair value on a recurring basis:  
 
Level I
 
Level II
 
Level III
 
Total
Assets
 
 
 
 
 
 
 
Cash and cash equivalents
$
796,621

 

 

 
$
796,621

Investments available for sale:
 

 
 

 
 

 
 

U.S. Treasury securities and obligations of U.S. government corporations and agencies
$
34,409

 
$
12,054

 

 
$
46,463

Corporate securities

 
262,999

 

 
262,999

Municipal securities:
 

 
 

 
 

 
 
General obligation

 
92,908

 

 
92,908

Pre-refunded

 
16,659

 

 
16,659

Revenue

 
87,060

 

 
87,060

Variable rate demand notes

 
92,225

 

 
92,225

Asset backed securities

 
75,420

 

 
75,420

Total investments
$
34,409

 
$
639,325

 

 
$
673,734

Restricted deposits available for sale:
 

 
 

 
 

 
 

Cash and cash equivalents
$
13,150

 

 

 
$
13,150

Certificates of deposit
5,891

 

 

 
5,891

U.S. Treasury securities and obligations of U.S. government corporations and agencies
13,958

 
$
510

 

 
14,468

Total restricted deposits
$
32,999

 
$
510

 

 
$
33,509

Other long-term assets: Interest rate swap contract

 
$
17,196

 

 
$
17,196

Total assets at fair value
$
864,029

 
$
657,031

 

 
$
1,521,060


The following table summarizes fair value measurements by level at December 31, 2011, for assets and liabilities measured at fair value on a recurring basis: 
 
Level I
 
Level II
 
Level III
 
Total
Assets
 
 
 
 
 
 
 
Cash and cash equivalents
$
573,698

 

 

 
$
573,698

Investments available for sale:
 

 
 

 
 

 
 

U.S. Treasury securities and obligations of U.S. government corporations and agencies
$
17,091

 
$
5,395

 

 
$
22,486

Corporate securities

 
189,029

 

 
189,029

Municipal securities:
 

 
 

 
 

 
 
General obligation

 
129,608

 

 
129,608

Pre-refunded

 
33,712

 

 
33,712

Revenue

 
120,860

 

 
120,860

Variable rate demand notes

 
64,658

 

 
64,658

Asset backed securities

 
52,192

 

 
52,192

Total investments
$
17,091

 
$
595,454

 

 
$
612,545

Restricted deposits available for sale:
 

 
 

 
 

 
 

Cash and cash equivalents
$
13,775

 

 

 
$
13,775

Certificates of deposit
5,890

 

 

 
5,890

U.S. Treasury securities and obligations of U.S. government corporations and agencies
7,153

 

 

 
7,153

Total restricted deposits
$
26,818

 

 

 
$
26,818

Other long-term assets: Interest rate swap contract

 
$
11,431

 

 
$
11,431

Total assets at fair value
$
617,607

 
$
606,885

 

 
$
1,224,492