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Discontinued Operations (Details) Narrative (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2012
Scenario, Forecast [Member]
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%
Dividend received from subsidiary, pending         $ 25,000,000
Pending sale of business unit, sale price, net of selling costs         19,600,000
Loss on write down of assets to fair value 5,369,000    5,369,000     
Tax benefit from provision for loss on disposal $ 3,000,000