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Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 6.25% Senior Notes Due 2017 | Dec. 31, 2012 6.25% Senior Notes Due 2017 | Aug. 21, 2012 6.25% Senior Notes Due 2017 | Dec. 31, 2012 12.75% Senior Secured Notes Due 2014 | Dec. 31, 2012 14 1/4% Senior Secured Notes Due 2015 | Dec. 31, 2012 12.50% Senior Notes Due 2016 | Jun. 30, 2011 Letter of Credit
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ 210.0 | $ 210.0 |  |  |  |  |  |  |  |
Maturity year of the debt instruments |  |  |  |  | 2017 | 2017 | 2017 | 2014 | 2015 | 2016 |
Cash paid for interest |  | 12.9 | 42.5 | 82.8 |  |  |  |  |  |  |
Capitalized interest expense |  | 3.2 | 5.3 | 4.9 |  |  |  |  |  |  |
Senior notes issued |  |  |  |  |  |  | 210 |  |  |  |
Interest rate of the debt instruments |  |  |  |  | 6.25% | 6.25% | 6.25% | 12.75% | 14.25% | 12.50% |
Aggregate principal amount retired |  |  | 362.3 | 477.9 |  |  |  |  |  |  |
Senior secured notes |  |  |  |  |  |  |  | 186.2 | 25.5 | 150.6 |
Charges recognized on debt instruments |  |  | 30.6 | 85.2 |  |  |  |  |  |  |
Debt premium paid |  |  | 26.6 | 77.8 |  |  |  |  |  |  |
Write off of debt issuance cost |  |  | 4.0 | 7.4 |  |  |  |  |  |  |
Maturity period (in years) of the credit facility | 5 years |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity under the credit agreement | 150 |  |  |  |  |  |  |  |  |  | 100
Letters of credit outstanding |  | 24.1 |  |  |  |  |  |  |  |  |
Availability under the facility |  | 112.8 |  |  |  |  |  |  |  |  |
Minimum consolidated cash and available credit facility |  | 130 |  |  |  |  |  |  |  |  |
Aggregate debt default amount to violate covenant, minimum | $ 50 | $ 50 |  |  |  |  |  |  |  |  |
Covenant conditions of the credit facility |  | It also contains financial covenants requiring the company to maintain a minimum fixed charge coverage ratio and, if the company’s consolidated cash plus availability under the credit facility falls below $130 million, a maximum secured leverage ratio. The credit agreement allows the company to pay dividends on its preferred stock unless the company is in default and to, among other things, repurchase its equity, prepay other debt, incur other debt or liens, dispose of assets and make acquisitions, loans and investments, provided the company complies with certain requirements and limitations set forth in the agreement. |  |  |  |  |  |  |  |  |

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- Definition Amount Of Other Debt Default That Violates Debt Covenants + References No definition available. + Details
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- Definition Amount of the total principal payments made during the annual reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
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- Definition Description of the conditions for borrowing under the credit facility including the nature of any restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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