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Credit Agreements (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 0 Months Ended | 1 Months Ended | 12 Months Ended |  |  |  | 0 Months Ended | 1 Months Ended |  |  |  |  |  | 12 Months Ended |  |  |  |  |
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May 02, 2013 | Feb. 11, 2013 | May 31, 2013 | May 30, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2013 Base rate [Member] | Dec. 31, 2013 Adjusted LIBOR rate [Member] | Dec. 31, 2013 LIBOR Floor Rate [Member] | Feb. 09, 2012 Tranche A term loan [Member] | Feb. 09, 2012 Tranche B term loan [Member] | Feb. 09, 2012 Revolving credit facility [Member] | May 31, 2013 Revolving credit facility [Member] | May 30, 2012 Revolving credit facility [Member] | Dec. 31, 2013 Term Loan [Member] | May 31, 2013 Term Loan [Member] | Dec. 31, 2012 Term Loan [Member] | May 30, 2012 Term Loan [Member] | Dec. 31, 2013 Term Loan [Member] Base rate [Member] | Dec. 31, 2013 Term Loan [Member] Adjusted LIBOR rate [Member] | Dec. 31, 2013 Term Loan [Member] LIBOR Floor Rate [Member] | Dec. 31, 2013 ABL revolving credit facility [Member] | May 30, 2012 ABL revolving credit facility [Member] | Dec. 31, 2013 ABL revolving credit facility [Member] Base rate [Member] | Dec. 31, 2013 ABL revolving credit facility [Member] Adjusted LIBOR rate [Member] | Dec. 31, 2013 ABL facility [Member] | Dec. 31, 2012 ABL facility [Member] | Dec. 31, 2013 Other lines of credit, as described below [Member] | Dec. 31, 2012 Other lines of credit, as described below [Member]
Short-term borrowings [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term borrowings |  |  |  |  | $ 9,575 | $ 12,550 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 9,575 | $ 12,550
Long-term debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount on debt |  |  |  |  | (12,735) | (16,482) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital lease obligations |  |  |  |  | 2,529 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other |  |  |  |  | 1,026 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt and capital lease obligation, gross |  |  |  |  | 1,187,820 | 881,268 |  |  |  |  |  |  |  |  |  |  | 1,197,000 |  | 897,750 |  |  |  |  |  |  |  |  |  |  |  |
Less current portion of debt |  |  |  |  | 12,286 | 82,250 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less current portion of capital lease obligation |  |  |  |  | 185 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  | 1,175,349 | 799,018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term borrowings outstanding [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 |  |  |  |  | 12,750 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 |  |  |  |  | 12,621 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 |  |  |  |  | 12,229 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 |  |  |  |  | 12,205 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
After 2018 |  |  |  |  | 1,150,750 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  | 1,200,555 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | 325,000 | 250,000 | 150,000 |  |  |  | 1,200,000 |  | 900,000 |  |  |  |  | 150,000 |  |  |  |  |  |
Uncommitted incremental term loan facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  | 125,000 |  |  |  |  | 50,000 |  |  |  |  |  |
Cash dividend (in dollars per share) |  |  | $ 5.00 | $ 6.00 | $ 5.00 | $ 6.00 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenant description |  |  |  |  | The ABL Facility continue to bear interest at rates based upon either a base rate plus an applicable margin of 1.00% or adjusted LIBOR rate plus an applicable margin of 2.00%, in each case, subject to adjustments based upon average availability under the ABL Facility. The New ABL Credit Agreement requires the Borrower to maintain a minimum consolidated fixed charge coverage ratio of 1.0x, tested on a quarterly basis, when Availability plus the amount of Qualified Cash (up to $5,000) (as defined in the New ABL Credit Agreement) under the ABL Facility is less than the greater of (i) 10.0% of the Line Cap (as defined in the New ABL Credit Agreement) and (ii) $10,000. The New ABL Credit Agreement also contains covenants and events of default substantially similar to those in the New Term Loan Credit Agreement, as described above. As of December 31, 2013, no amounts were outstanding under the ABL Facility. As of December 31, 2013, the Company had $150,147 of unrestricted cash and cash equivalents and $147,492 of availability under the ABL Facility, net of outstanding letters of credit. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of term loan amortization (in hundredths) |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment of term loan | 30,000 | 80,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (in hundredths) |  |  |  |  |  |  |  |  | 4.00% | 5.00% | 1.25% |  |  |  |  |  |  |  |  |  | 1.75% | 2.75% | 0.75% |  |  | 1.00% | 2.00% |  |  |  |
Basis spread on variable rate in second quarter of 2014 if net debt leverage ratio falls below 3.00 to 1.00 (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.50% | 2.50% |  |  |  |  |  |  |  |  |
Fixed charge coverage ratio in multiple |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.0x |  |  |  |  |  |  |
Qualified Cash |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |  |
Percentage of aggregate commitments (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |
Amount availability under agreements as per covenants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 150,147 | 108,023 | 93,126 | 78,583 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility amount available |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 147,492 |  |  |  |  |  |  |
New debt issuance cost |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,409 | 21,824 | 15,309 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fees paid to creditors as a debt discount |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,386 | 13,797 | 18,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Transaction fees |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,407 | 7,100 | 801 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of unamortized debt issuance costs and original issue discount | $ 924 | $ 1,839 |  |  |  |  |  |  |  |  |  |  |  | $ 2,902 | $ 5,473 | $ 9,198 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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