Provision recognizing a loss (after tax benefit) for initial, or subsequent, write-down to fair value (less cost to sell) of a disposal group that is classified as a component of the entity, which remains unsold as of the reporting date. May include the recognition of a (gain) (net of tax expense) for a subsequent increase in fair value (less cost to sell), but not in excess of the cumulative loss previously recognized through write-downs.

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Tax benefit from provision recognizing a loss for initial, or subsequent, write-down to fair value (less cost to sell) of a of a disposal group that is classified as a component of the entity, which remains unsold as of the reporting date. May include a tax on the (gain) for the recognition of a subsequent increase in fair value (less cost to sell), but not in excess of the cumulative loss previously recognized through write-downs.

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Discontinued Operations (Details) Narrative (USD $)	12 Months Ended		3 Months Ended
Discontinued Operations (Details) Narrative (USD $)	Dec. 31, 2012	Dec. 31, 2012 Scenario, Forecast	Sep. 30, 2012 Subsidiaries, Citation Insurance	Sep. 30, 2012 Subsidiaries, Physicians Insurance Company
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of interest in business unit sold, pending		100.00%
Pre-close dividend received from subsidiary			$ 15,000,000	$ 25,000,000
Pending sale of business unit, sale price, net of selling costs		15,500,000
Loss on write down of assets to fair value	6,920,000
Tax benefit from provision for loss on disposal	$ 5,000,000