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Long-Term Debt Long-term Debt text (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended |  |  |  |  |  |  |  |  |  | 6 Months Ended
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Jun. 30, 2014 | May 16, 2013 Term A Loans, Term B Loans and Revolving Loans [Member] | Jun. 30, 2014 Term-A Loan Facility due May 2018 [Member] | Feb. 28, 2014 Term-A Loan Facility due May 2018 [Member] | May 16, 2013 Term-A Loan Facility due May 2018 [Member] | Jun. 30, 2014 Term-B Loan Facility due May 2020 [Member] | Feb. 28, 2014 Term-B Loan Facility due May 2020 [Member] | May 16, 2013 Term-B Loan Facility due May 2020 [Member] | Jun. 30, 2014 Revolving Credit Facility due May 2018 [Member] | May 16, 2013 Revolving Credit Facility due May 2018 [Member] | Jun. 30, 2014 Eurodollar [Member] Term-B Loan Facility due May 2020 [Member] | Jun. 30, 2014 Minimum [Member] Revolving Credit Facility due May 2018 [Member] | Jun. 30, 2014 Minimum [Member] Eurodollar Rate or Base Rate [Member] Revolving Loans and Term A Loans [Member] | Jun. 30, 2014 Maximum [Member] Revolving Credit Facility due May 2018 [Member] | Jun. 30, 2014 Maximum [Member] Eurodollar Rate or Base Rate [Member] Revolving Loans and Term A Loans [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 500.0 |  |  |  |  |  |  |  | $ 125.0 |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | 100.0 |  |  | 275.0 |  |  |  |  |  |  |
Proceeds from long-term debt |  |  |  | 82.5 |  |  |  |  |  |  |  |  |  |  |
Repayment of long-term debt |  |  |  |  |  |  | 82.5 |  |  |  |  |  |  |  |
Line of Credit Facility, Increase in Additional Principal Amount |  | 100.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  | 2.50% |  | 1.75% |  | 2.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  | 0.40% |
Debt Instrument, Interest Rate at Period End |  |  | 2.20% |  |  | 3.50% |  |  | 2.20% |  |  |  |  |  |
Debt, Weighted Average Interest Rate | 2.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Leverage Ratio | 1.98 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  |  | $ 93.6 |  |  |  |  |  |

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- Definition The leverage ratio as defined in the credit agreement. + References No definition available. + Details
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- Definition Line of Credit Facility, Increase in Additional Principal Amount + References No definition available. + Details
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- Definition Proceeds from long-term debt + References No definition available. + Details
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- Definition Repayment of long-term debt + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + 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 The effective interest rate at the end of the reporting period. + 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 Minimum 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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