Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Valuation and Qualifying Accounts Disclosure [Table Text Block]

Allowance for doubtful accounts (in thousands):
Balance, December 31, 2012	$	3,476
Provision		2,225
Recoveries		(2,220	)
Charge-offs		(1,521	)
Balance, December 31, 2013	$	1,960
Provision		8,195
Recoveries		(17	)
Charge-offs		(5,603	)
Balance, December 31, 2014	$	4,535
Provision		3,509
Recoveries		(100	)
Charge-offs		(3,095	)
Balance, December 31, 2015	$	4,849

Estimated liability for appeals and estimated allowance for appeals (in thousands):
Balance, December 31, 2012	$	34,426
Provision		41,076
Appeals found in providers favor		(19,711	)*
Balance, December 31, 2013	$	55,791	**
Provision		16,822
Appeals found in providers favor		(30,990	)*
Balance, December 31, 2014	$	41,623	**
Provision		15,642
Appeals found in providers favor		(17,573	)*
Balance, December 31, 2015	$	39,692	**