Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues
Health plan services premiums	$ 2,632,069	$ 2,620,949
Government contracts	134,512	181,362
Net investment income	29,551	22,304
Administrative service fees and other income	905	5,784
Total revenues	2,797,037	2,830,399
Expenses
Health plan services (excluding depreciation and amortization)	2,268,736	2,343,659
Government contracts	125,475	162,310
General and administrative	245,235	237,276
Selling	58,561	61,561
Depreciation and amortization	9,439	7,430
Interest	8,288	8,628
Divested operations and services expenses	0	23,096
Total expenses	2,715,734	2,843,960
Income (loss) from continuing operations before income taxes	81,303	(13,561)
Income tax provision (benefit)	31,253	(5,427)
Income (loss) from continuing operations	50,050	(8,134)
Discontinued operations:
Loss from discontinued operation, net of tax	0	(18,452)
Net income (loss)	$ 50,050	$ (26,586)
Net income (loss) per share - basic:
Income (loss) from continuing operations	$ 0.63	$ (0.10)
Loss on discontinued operation, net of tax	$ 0.00	$ (0.22)
Net income (loss) per share - basic	$ 0.63	$ (0.32)
Net income (loss) per share - diluted:
Income (loss) from continuing operations	$ 0.62	$ (0.10)
Loss on discontinued operation, net of tax	$ 0.00	$ (0.22)
Net income (loss) per share - diluted	$ 0.62	$ (0.32)
Weighted average shares outstanding:
Basic	79,508	82,513
Diluted	80,489	82,513