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Debt (Schedule of Carrying Values of Debt) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |
Finance lease and other obligations | $ 288,500 | $ 305,600
Total debt obligations | 1,318,700 | 1,444,800
Less unamortized deferred financing costs | (16,000) | (12,400)
Total debt, net of deferred financing costs | 1,302,700 | 1,432,400
Current portion of long-term debt | 145,110 | 118,429
Long-term debt | $ 1,157,632 | 1,314,030
Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit facility, maturity date | Sep. 19, 2024 |
Credit Facility [Member] | Revolving Loans [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt obligations | $ 32,700 | 339,200
Credit Facility [Member] | Term Loan [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt obligations | 397,500 | 400,000
Senior Notes [Member] | 4.875% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt obligations | $ 0 | 400,000
Debt instrument, interest rate (percentage) | 4.875% |
Debt instrument, maturity date | Mar. 15, 2023 |
Senior Notes [Member] | 4.50% Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt obligations | $ 600,000 | $ 0
Debt instrument, interest rate (percentage) | 4.50% |
Debt instrument, maturity date | Aug. 15, 2028 |

X
- Definition The carrying amount as of the balance sheet date for the aggregate of finance lease and other obligations. Finance lease obligations represents the present value of lessee's discounted obligation for lease payments from finance leases. Other obligations represents the carrying amount of debt obligations classified as other. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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=120398452&loc=d3e534808-122878 + Details
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