Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements

Fair value measurements of financial assets and liabilities

Financial assets and liabilities	Fair Value			Level 1		Level 2			Level 3
Marketable equity securities	$	17,053		$	17,053	$	—		$	—
Interest-rate swap liabilities(1)		(12,123	)		—		(12,123	)		—
Warrants(1)		1,334			—		—			1,334
	$	6,264		$	17,053	$	(12,123	)	$	1,334

(1)

Interest rate swap and common stock warrant values are determined based on observable and unobservable market assumptions using standardized derivative pricing models.