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Long-Term Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2014 | Jun. 30, 2014
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Net carrying amount of liability component | $ 1,283,887 | $ 1,251,555 |  |
Long Term Debt And Capital Lease Obligations Excluding Short Term Financing Current | 27,208 | 52,021 |  |
LONG-TERM DEBT, net of current maturities | 1,256,679 | 1,199,534 |  |
5.00% Senior Note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Unsecured Long-term Debt, Noncurrent | 539,309 | 538,933 |  |
Debt Instrument, Face Amount | 550,000 | 550,000 | $ 200,000 | $ 350,000
5.25% Senior Note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Unsecured Long-term Debt, Noncurrent | 295,186 | 295,156 |  |
Debt Instrument, Face Amount | 300,000 | 300,000 |  |
Real Estate Related Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Face Amount | 351,100 |  |  |
Other Real Estate Related Long-Term Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Real Estate Related and Other Long-Term Debt | 398,509 | 365,564 |  |
Capital Lease Obligations [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Capital lease obligations related to real estate, maturing in varying amounts through June 2034 with a weighted average interest rate of 9.7% and 9.8%, respectively | $ 50,883 | $ 51,902 |  |

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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 and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 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 + 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 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: 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 + Details
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