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Commitments and Contingencies (Details) (USD $)
|
3 Months Ended | 6 Months Ended | 57 Months Ended | |
|---|---|---|---|---|
|
Jun. 30, 2013
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Jun. 30, 2013
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Jun. 30, 2013
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Dec. 31, 2012
|
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| Commitments and Contingencies (Textuals) | ||||
| Loss Contingency Accrual, at Carrying Value | $ 18,000,000 | $ 18,000,000 | $ 18,000,000 | |
| Litigation Settlement, Amount | 7,000,000 | 7,000,000 | ||
| Litigation Settlement, Expense | 4,000,000 | 4,000,000 | ||
| Accrual for Environmental Loss Contingencies Disclosure [Abstract] | ||||
| Site Contingency Study Paid | 550,000 | |||
| Capital Lease Obligations | $ 57,000,000 | $ 57,000,000 | $ 57,000,000 | $ 57,000,000 |