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Equity Offering (Details) (USD $) | 12 Months Ended | 3 Months Ended |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Senior secured notes [Member] | Jun. 30, 2012 Senior secured notes [Member] | Dec. 29, 2009 Senior secured notes [Member] | Jun. 30, 2012 Issuance of Equity [Member] Senior secured notes [Member] | Jun. 30, 2012 Common Stock [Member] Issuance of Equity [Member] | May 08, 2012 Common Stock [Member] Issuance of Equity [Member]
Equity Offering [Line Items] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  | 4,000,000 |
Stock Issued During Period, Value, Per Share Offering Price |  |  |  |  |  |  |  |  | $ 20.75
Stock Issuance Costs |  |  |  |  |  |  |  | $ 4,000,000 |
Proceeds from sale of common stock | 79,040,000 | 0 | 0 |  |  |  |  | 79,000,000 |
Proceeds Used for Early Extinguishment of Debt |  |  |  |  |  |  | 54,900,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 9.75% |  |  |
Extinguishment of Debt, Amount |  |  |  | $ 200,000,000 | $ 50,000,000 |  |  |  |

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- Definition The amount of proceeds from the issuance of common stock used for the early extinguishment of debt, including principal payment and call premium. + References No definition available. + Details
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- Definition The per share offering price of the common stock issued as a part of an equity offering during the period. + References No definition available. + Details
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- Definition Direct costs (e.g., legal and accounting fees) associated with issuing stock that is deducted from additional paid in capital. Also includes any direct costs associated with stock issues under a shelf registration. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Technical Practice Aid (TPA) -Number 4110 -Paragraph 1, 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 + Details
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