Fair Value Of Assets And Liabilities (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value Of Assets And Liabilities

Valuation Of Assets And Liabilities Measured At Fair Value On Recurring Basis

June 30, 2011	Level 1		Level 3		Fair Value
Assets
Money Market Funds (1)	$	50,014	$	0	$	50,014
Liabilities
Acquisition-related contingent consideration-short-term (2)	$	0	$	9,180	$	9,180
Acquisition-related contingent consideration-long-term (3)		0		9,710		9,710
Total acquisition-related contingent consideration	$	0	$	18,890	$	18,890
December 31, 2010
Assets
Money Market Funds (1)	$	101,600	$	0	$	101,600

(1) Included in cash and cash equivalents in the accompanying condensed consolidated balance sheets.

(2) Included in current installments of long-term obligations in the accompanying condensed consolidated balance sheets.

(3) Included in long-term obligations, excluding current installments in the accompanying condensed consolidated balance sheets.

Changes In Estimated Fair Values Of Assets And Liabilities Measured Using Significant Unobservable Inputs

	(In thousands)
	Assets		Liabilities
Balance on December 31, 2010	$	0	$	0
Acquisition-related contingent consideration recorded in 2011		0		18,890
Balance on June 30, 2011	$	0	$	18,890

Estimated Fair Value Of Assets And Liabilities Not Measured On Recurring Basis

(In thousands)	June 30, 2011				December 31, 2010
	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Short-term investments – held to maturity	$	40,000	$	40,000	$	40,000	$	40,000
Restricted cash		0		0		345		345
Liabilities:
2.75% Series A Debentures		260,747		308,172		255,727		302,672
2.75% Series B Debentures		238,771		323,297		234,047		305,422
Deferred acquisition obligations		12,050		12,050		619		619