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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2011

Summary of estimated fair values of financial instruments

	2011						2010

	Carrying Value			Fair Value			Carrying Value			Fair Value
Cash equivalents	$	27,711		$	27,711		$	91,448		$	91,448
Marketable securities		6,338			6,338			8,166			8,166
Long-term debt (as described in note 14)		(6,651,011	)		(6,732,568	)		(3,595,277	)		(4,174,561	)

Summary of marketable securities by major security type

	2011									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	$	2,983	$	2,974	$	—	$	(9	)	$	6,234	$	6,340	$	106	$	—
Government-sponsored enterprise securities		—		—		—		—			1,825		1,826		1		—
Equity securities		1,730		3,364		1,634		—			—		—		—		—

	$	4,713	$	6,338	$	1,634	$	(9	)	$	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