Fair Value Measurements (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2012

Dec. 31, 2011

Fair Value Measurements of Assets and Liabilities

The following tables set forth information regarding the Company’s financial instruments that are measured at fair value on a recurring basis in the accompanying condensed consolidated balance sheets as of March 31, 2012 and December 31, 2011:



			Fair Value Measurements at Reporting Date Using
	Fair Value at March 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Available-for-sale securities	$	32,133	$	20,304	$	—	$	11,829
Privately held debt and equity securities	2,475		—		—		2,475
Interest rate cap	3		—		3		—

Liabilities:
Interest rate swaps	$	5,316	$	—	$	5,316	$	—



			Fair Value Measurements at Reporting Date Using
	Fair Value at December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Available-for-sale securities	$	30,613	$	18,784	$	—	$	11,829
Privately held debt and equity securities	2,475		—		—		2,475

Liabilities:
Interest rate swaps	$	5,617	$	—	$	5,617	$	—

Summary of Equity Securities

The following is a summary of the available-for-sale securities held by the Company as of March 31, 2012 and December 31, 2011:



			Gross Unrealized
	Adjusted Cost		Gains		Losses			Fair Value
March 31, 2012:
Common stocks	$	4,207	$	10,918	$	(5	)	$	15,120
Mutual funds	943		59		—			1,002
Mortgage/asset-backed securities	1,814		7		(12		)	1,809
Government and government sponsored entities	14,984		22		(1,548		)	13,458
Corporate bonds	683		27		—			710
International bonds	33		1		—			34
	$	22,664	$	11,034	$	(1,565	)	$	32,133



			Gross Unrealized
	Adjusted Cost		Gains		Losses			Fair Value
December 31, 2011:
Common stocks	$	4,207	$	9,480	$	(5	)	$	13,682
Mutual funds	928		23		—			951
Mortgage/asset-backed securities	1,717		10		(4		)	1,723
Government and government sponsored entities	15,058		45		(1,542		)	13,561
Corporate bonds	636		26		—			662
International bonds	33		1		—			34
	$	22,579	$	9,585	$	(1,551	)	$	30,613

- Definition

Tabular disclosure of available-for-sale securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt.

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+ Details

- Definition

This element represents the disclosure related to assets and liabilities by class, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition (for example, impaired assets). The disclosures that may be required or desired include: (a) the fair value measurements recorded during the period and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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