v2.4.0.8

Fair Value of Financial Instruments (Details 2) (USD $) In Thousands, unless otherwise specified | 9 Months Ended |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Sep. 30, 2013 Minimum | Sep. 30, 2013 Maximum | Sep. 30, 2013 3.375% Senior Notes | Dec. 31, 2012 3.375% Senior Notes | Sep. 30, 2011 3.375% Senior Notes | Sep. 30, 2013 1.5% Convertible Senior Notes | Dec. 31, 2012 1.5% Convertible Senior Notes | Feb. 29, 2004 1.5% Convertible Senior Notes | Mar. 31, 2013 5.625% Municipal Bonds | Sep. 30, 2013 5.625% Municipal Bonds | Dec. 31, 2012 5.625% Municipal Bonds | Sep. 30, 2013 Carrying Value | Dec. 31, 2012 Carrying Value | Sep. 30, 2013 Carrying Value Other borrowings | Sep. 30, 2013 Carrying Value 3.375% Senior Notes | Dec. 31, 2012 Carrying Value 3.375% Senior Notes | Sep. 30, 2013 Carrying Value 1.5% Convertible Senior Notes | Dec. 31, 2012 Carrying Value 1.5% Convertible Senior Notes | Dec. 31, 2012 Carrying Value 5.625% Municipal Bonds | Dec. 31, 2012 Carrying Value Notes payable, including noncurrent portion | Sep. 30, 2013 Fair Value Level 1 | Dec. 31, 2012 Fair Value Level 1 | Sep. 30, 2013 Fair Value Level 2 | Dec. 31, 2012 Fair Value Level 2 | Sep. 30, 2013 Fair Value Level 3 | Dec. 31, 2012 Fair Value Level 3 | Sep. 30, 2013 Fair Value Other borrowings Level 2 | Sep. 30, 2013 Fair Value 3.375% Senior Notes Level 2 | Dec. 31, 2012 Fair Value 3.375% Senior Notes Level 2 | Sep. 30, 2013 Fair Value 1.5% Convertible Senior Notes Level 2 | Dec. 31, 2012 Fair Value 1.5% Convertible Senior Notes Level 2 | Dec. 31, 2012 Fair Value 5.625% Municipal Bonds Level 2 | Dec. 31, 2012 Fair Value Notes payable, including noncurrent portion Level 3
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |  |  |  |  |  | $ 1,604,552 | $ 1,343,866 |  |  |  |  |  |  |  | $ 1,604,552 | $ 1,343,866 |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  | 913,904 | 796,218 |  |  |  |  |  |  |  |  |  | 913,904 | 796,218 |  |  |  |  |  |  |  |  |
Marketable securities, current |  |  |  |  |  |  |  |  |  |  |  | 22,812 | 34,688 |  |  |  |  |  |  |  |  |  | 22,812 | 34,688 |  |  |  |  |  |  |  |  |
Notes receivable, including noncurrent portion |  |  |  |  |  |  |  |  |  |  |  | 25,836 | 34,471 |  |  |  |  |  |  |  |  |  |  |  | 25,836 | 34,471 |  |  |  |  |  |  |
Debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,035 | $ 496,494 | $ 496,164 | $ 18,398 | $ 18,472 | $ 17,795 | $ 8,566 |  |  |  |  |  |  | $ 7,035 | $ 493,992 | $ 527,219 | $ 47,510 | $ 39,392 | $ 17,878 | $ 8,566
Debt instrument interest rate (as a percent) |  |  | 3.375% | 3.375% | 3.375% | 1.50% | 1.50% | 1.50% |  |  | 5.625% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price as a percentage of the principal amount of bonds (as a percent) |  |  |  |  |  |  |  |  | 100.00% | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes payable, maturity period | 1 year | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -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 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -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 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13476-108611 + Details
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- Definition 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)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Percentage of principal amount of debt redeemed. + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 + Details
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- Definition Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date. + 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 210.5-02.3(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 3 -Subparagraph b -Article 5 + Details
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