Summary of Significant Accounting Policies Reclassifications (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 Scenario, Previously Reported [Member]	Mar. 31, 2013 Scenario, Previously Reported [Member]	Jun. 30, 2013 Restatement Adjustment [Member]	Mar. 31, 2013 Restatement Adjustment [Member]	Jun. 30, 2013 Scenario, Actual [Member]	Mar. 31, 2013 Scenario, Actual [Member]
Member benefit claims	$ 13,834	$ 1,157	$ 34,624	$ 3,558	$ 11,114	$ 8,978	$ 310	$ 388	$ 11,424	$ 9,366
Other operating expenses	10,850	7,959	30,438	21,635	10,481	9,805	(310)	(388)	10,171	9,417
Net Income	$ 3,222	$ 4,024	$ 10,157	$ 11,382	$ 4,442	$ 2,493	$ 0	$ 0	$ 4,442	$ 2,493