| Fair Value Measurements By Level For Assets Measured At Fair Value On A Recurring Basis |
The following table summarizes fair value measurements by level at December 31, 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 |
$ |
843,952 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
843,952 |
|
Investments available for sale: |
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities and obligations of U.S. government corporations and agencies |
$ |
57,114 |
|
|
$ |
46,250 |
|
|
$ |
— |
|
|
$ |
103,364 |
|
Corporate securities |
— |
|
|
320,710 |
|
|
— |
|
|
320,710 |
|
Municipal securities: |
|
|
|
|
|
|
|
|
|
|
General obligation |
— |
|
|
89,837 |
|
|
— |
|
|
89,837 |
|
Pre-refunded |
— |
|
|
5,422 |
|
|
— |
|
|
5,422 |
|
Revenue |
— |
|
|
86,027 |
|
|
— |
|
|
86,027 |
|
Variable rate demand notes |
— |
|
|
37,685 |
|
|
— |
|
|
37,685 |
|
Asset backed securities |
— |
|
|
84,475 |
|
|
— |
|
|
84,475 |
|
Total investments |
$ |
57,114 |
|
|
$ |
670,406 |
|
|
$ |
— |
|
|
$ |
727,520 |
|
Restricted deposits available for sale: |
|
|
|
|
|
|
|
|
|
|
|
Cash and cash equivalents |
$ |
14,460 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
14,460 |
|
Certificates of deposit |
5,890 |
|
|
— |
|
|
— |
|
|
5,890 |
|
U.S. Treasury securities and obligations of U.S. government corporations and agencies |
14,443 |
|
|
— |
|
|
— |
|
|
14,443 |
|
Total restricted deposits |
$ |
34,793 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
34,793 |
|
Other long-term assets: |
|
|
|
|
|
|
|
Interest rate swap contract |
$ |
— |
|
|
$ |
16,304 |
|
|
$ |
— |
|
|
$ |
16,304 |
|
Total assets at fair value |
$ |
935,859 |
|
|
$ |
686,710 |
|
|
$ |
— |
|
|
$ |
1,622,569 |
|
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 |
|
|