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Subsequent Events - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 0 Months Ended |  |  | 0 Months Ended |
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Mar. 31, 2014 | Mar. 31, 2013 | Mar. 14, 2014 Senior Secured Notes [Member] | Nov. 30, 2011 Senior Secured Notes [Member] | Mar. 14, 2014 November Two Thousand Eleven Senior Notes [Member] | May 01, 2014 Subsequent Events [Member] | Apr. 14, 2014 Subsequent Events [Member] Senior Secured Notes [Member] | Apr. 14, 2014 Subsequent Events [Member] November Two Thousand Eleven Senior Notes [Member]
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Dividends declared per share | $ 0.11 | $ 0.11 |  |  |  | $ 0.11 |  |
Date of payment of dividend |  |  |  |  |  | May 27, 2014 |  |
Date of record of dividend |  |  |  |  |  | May 15, 2014 |  |
Date of announcement of dividend |  |  |  |  |  | May 01, 2014 |  |
Aggregate face amount of debt redeemed |  |  | $ 45.0 |  |  |  | $ 45.0 |
Redemption price as a percentage of face amount |  |  | 106.563% |  |  |  | 106.563% |
Total amount of debt to be retired |  |  | 50.0 |  | 5.0 |  |  | 5.0
Outstanding principal amount of the debt |  |  |  | $ 150.0 |  |  | $ 150.0 |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 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=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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