Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2013

Basis of Presentation

Schedule of allowances for doubtful accounts

Allowance for doubtful accounts (in thousands):

Balance, December 31, 2011	$	1,158
Provision	19
Recoveries	—
Charge-offs	(347		)
Balance, December 31, 2012	$	830
Provision	551
Recoveries	(42		)
Charge-offs	(167		)
Balance, September 30, 2013	$	1,172

Estimated allowance for appeals and estimated liability for appeals (in thousands):

Balance, December 31, 2011	$	10,383
Provision	20,513
Appeals found in Providers favor	(2,124		)
Balance, December 31, 2012	$	28,772	*
Provision	17,261
Appeals found in Providers favor	(6,031		)
Balance, September 30, 2013	$	40,002	*

*Includes $12,518 and $6,985 related to estimated allowance for appeals that apply to uncollected accounts receivable as of September 30, 2013 and December 31, 2012, respectively