Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]

Financial assets measured at fair value on a recurring basis

The Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis was as follows (in thousands):

	December 31, 2012								December 31, 2011
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	54,085	$	—	$	—	$	54,085	$	54,006	$	—	$	—	$	54,006
Rabbi Trust:
Mutual funds	22,041		—		—		22,041		25,626		—		—		25,626
Money market funds	5,698		—		—		5,698		697		—		—		697
Total assets	$	81,824	$	—	$	—	$	81,824	$	80,329	$	—	$	—	$	80,329
Liabilities:
Payables to plan participants	$	27,739	$	—	$	—	$	27,739	$	26,323	$	—	$	—	$	26,323
Acquisition contingent liability	—		—		1,100		1,100		—		—		—		—
Total liabilities	$	27,739	$	—	$	1,100	$	28,839	$	26,323	$	—	$	—	$	26,323

Carrying amount and estimated fair value of financial instruments

The carrying amount and estimated fair value of the Company’s other financial instruments were as follows (in thousands):

	December 31, 2012				December 31, 2011
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Assets:
Note receivable from CareCentrix	$	25,000	$	25,220	$	25,000	$	26,600
Seller financing note receivable from CareCentrix	3,471		3,471		—		—
Liabilities:
Long-term obligations	$	935,182	$	912,818	$	988,125	$	863,313