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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2011

Summary of estimated fair values of financial instruments

	As of September 30, 2011						As of December 31, 2010

	Carrying Value			Fair Value			Carrying Value			Fair Value
Cash equivalents	$	78,340		$	78,340		$	91,448		$	91,448
Marketable securities		2,967			2,967			8,166			8,166
Long-term debt		(5,226,911	)		(4,921,199	)		(3,595,277	)		(4,174,561	)

Summary of marketable securities by major security type

	As of September 30, 2011								As of December 31, 2010

					Gross Unrealized								Gross Unrealized
	Cost Basis		Fair Value		Gross Unrealized				Cost Basis		Fair Value		Gross Unrealized
	Cost Basis		Fair Value		Gains		Losses		Cost Basis		Fair Value		Gains		Losses
Corporate bonds	$	2,955	$	2,967	$	12	$	—	$	6,234	$	6,340	$	106	$	—
Government-sponsored enterprise securities		—		—		—		—		1,825		1,826		1		—

	$	2,955	$	2,967	$	12	$	—	$	8,059	$	8,166	$	107	$	—

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

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+ Details