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Long-Term Debt (Detail Textuals 2) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended | 1 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2008 Interest Rate Swap | Dec. 31, 2008 Letter of credit subfacility | Dec. 31, 2013 Letter of credit subfacility | Dec. 31, 2013 Revolving credit facility | Dec. 31, 2012 Revolving credit facility | Jan. 17, 2014 Revolving credit facility Subsequent Event | Dec. 31, 2012 Letter of swingline subfacility | Jan. 17, 2014 Letter of swingline subfacility Subsequent Event
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |
Threshold limit of ratio of debt to earnings before interest taxes depreciation and amortization | no more than 2.5 to 1 |  |  |  |  |  |  |  |  |
Debt-to-EBITDA ratio (in times) | 2.5 |  |  |  |  |  |  |  |  |
Threshold limit of ratio of earnings before interest taxes depreciation and amortization to interest expenses | no less than 2 to 1 |  |  |  |  |  |  |  |  |
EBITDA to interest expense ratio (in times) | 2 |  |  |  |  |  |  |  |  |
Outstanding borrowings under the facility |  |  |  |  | $ 24.1 | $ 53.3 | $ 107.0 |  |  |
Amount of interest rate swap agreement |  |  | 50.0 | 18.1 |  |  |  |  |  |
Debt instrument, interest rate, basis for effective rate |  |  |  | 2.07% |  |  |  |  |  |
Commitment fees and other debt related costs |  |  |  |  |  |  |  | 0.7 |  |
Decrease in interest rates on the revolving loans under the Credit Agreement |  |  |  |  |  |  |  | 0.125% |  |
Maximum amount outstanding during the period |  | $ 350 |  |  |  |  |  |  | $ 25 | $ 35

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- Definition It represents ratio of earnings before interest, taxes, depreciation and amortization to interest expense. + References No definition available. + Details
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- Definition This element represents threshold limit of the ratio of debt to earnings before interest taxes depreciation and amortization. + References No definition available. + Details
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- Definition This element represents threshold limit of the ratio of earnings before interest taxes depreciation and amortization to interest expenses. + References No definition available. + Details
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- Definition Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Beneficial Conversion Feature -URI http://asc.fasb.org/extlink&oid=6505963 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + 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 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Incremental percentage increase (decrease) in the stated rate on a debt instrument. + References No definition available. + Details
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- Definition Represents the charge against earnings during the period for commitment fees and debt issuance expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: 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 Maximum amount borrowed under the credit facility at any time during the period. + References No definition available. + Details
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