XML 64 R12.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Marketable Securities | 12 Months Ended
--- | ---
Dec. 31, 2011
Marketable Securities [Abstract] |
Marketable Securities | NOTE 4:- MARKETABLE SECURITIES Marketable securities with contractual maturities of less than one year are as follows:
|  | December 31, |
|  | 2010 |  |  | 2011 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |  |  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
Government and corporate debentures - fixed interest rate |  | $ | 313,939 |  |  | $ | 2,372 |  |  | $ | (85 | ) |  | $ | 316,226 |  |  | $ | 504,749 |  |  | $ | 3,534 |  |  | $ | (237 | ) |  | $ | 508,046 |
Government-sponsored enterprises |  |  | 142,496 |  |  |  | 504 |  |  |  | (100 | ) |  |  | 142,900 |  |  |  | 40,088 |  |  |  | 238 |  |  |  | — |  |  |  | 40,326 |
Government and corporate debentures - floating interest rate |  |  | 78,505 |  |  |  | 97 |  |  |  | (10 | ) |  |  | 78,592 |  |  |  | 95,086 |  |  |  | 129 |  |  |  | (48 | ) |  |  | 95,167 |
|  | $ | 534,940 |  |  | $ | 2,973 |  |  | $ | (195 | ) |  | $ | 537,718 |  |  | $ | 639,923 |  |  | $ | 3,901 |  |  | $ | (285 | ) |  | $ | 643,539 |
Marketable securities with contractual maturities of over one year through five years are as follows:
|  | December 31, |
|  | 2010 |  |  | 2011 |
|  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |  |  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair value |
Government and corporate debentures - fixed interest rate |  | $ | 990,454 |  |  | $ | 18,421 |  |  | $ | (1,731 | ) |  | $ | 1,007,144 |  |  | $ | 1,103,254 |  |  | $ | 14,854 |  |  | $ | (2,058 | ) |  | $ | 1,116,050 |
Government-sponsored enterprises |  |  | 189,085 |  |  |  | 1,366 |  |  |  | (552 | ) |  |  | 189,899 |  |  |  | 295,235 |  |  |  | 2,061 |  |  |  | (151 | ) |  |  | 297,145 |
Government and corporate debentures - floating interest rate |  |  | 120,206 |  |  |  | 297 |  |  |  | (85 | ) |  |  | 120,418 |  |  |  | 102,161 |  |  |  | 160 |  |  |  | (1,729 | ) |  |  | 100,592 |
Auction rate securities (*) |  |  | 7,990 |  |  |  | — |  |  |  | — |  |  |  | 7,990 |  |  |  | 6,078 |  |  |  | — |  |  |  | — |  |  |  | 6,078 |
|  | $ | 1,307,735 |  |  | $ | 20,084 |  |  | $ | (2,368 | ) |  | $ | 1,325,451 |  |  | $ | 1,506,728 |  |  | $ | 17,075 |  |  | $ | (3,938 | ) |  | $ | 1,519,865 |
Investments with continuous unrealized losses for less than 12 months and 12 months or greater and their related fair values were as follows:
|  | December 31, 2010 |
|  | Investments with continuous unrealized losses for less than 12 months |  |  | Investments with continuous unrealized losses for 12 months or greater |  |  | Total Investments with continuous unrealized losses |
|  | Fair value |  |  | Unrealized losses |  |  | Fair value |  |  | Unrealized losses |  |  | Fair value |  |  | Unrealized losses |
Government and corporate debentures - fixed interest rate |  | $ | 195,784 |  |  | $ | (1,816 | ) |  | $ | — |  |  | $ | — |  |  | $ | 195,784 |  |  | $ | (1,816 | )
Government-sponsored enterprises |  |  | 122,574 |  |  |  | (649 | ) |  |  | 4,999 |  |  |  | (3 | ) |  |  | 127,572 |  |  |  | (652 | )
Government and corporate debentures - floating interest rate |  |  | 58,632 |  |  |  | (47 | ) |  |  | 15,834 |  |  |  | (48 | ) |  |  | 74,467 |  |  |  | (95 | )
|  | $ | 376,990 |  |  | $ | (2,512 | ) |  | $ | 20,833 |  |  | $ | (51 | ) |  | $ | 397,823 |  |  | $ | (2,563 | )
|  | December 31, 2011 |
|  | Investments with continuous unrealized losses for less than 12 months |  |  | Investments with continuous unrealized losses for 12 months or greater |  |  | Total Investments with continuous unrealized losses |
|  | Fair value |  |  | Unrealized losses |  |  | Fair value |  |  | Unrealized losses |  |  | Fair value |  |  | Unrealized losses |
Government and corporate debentures - fixed interest rate |  | $ | 267,326 |  |  | $ | (2,225 | ) |  | $ | 27,490 |  |  | $ | (69 | ) |  | $ | 294,816 |  |  | $ | (2,294 | )
Government-sponsored enterprises |  |  | 131,540 |  |  |  | (151 | ) |  |  | — |  |  |  | — |  |  |  | 131,540 |  |  |  | (151 | )
Government and corporate debentures - floating interest rate |  |  | 66,426 |  |  |  | (1,634 | ) |  |  | 14,741 |  |  |  | (144 | ) |  |  | 81,167 |  |  |  | (1,778 | )
|  | $ | 465,292 |  |  | $ | (4,010 | ) |  | $ | 42,231 |  |  | $ | (213 | ) |  | $ | 507,523 |  |  | $ | (4,223 | )
| (*) | The balance in 2010 was comprised of four auction rate securities, which have suffered from failed auctions since September 2007. During 2011 two of these securities were sold. As a result of the auction failures these auction rate securities do not have a readily determinable market value. As such, since 2008, the Company determines the fair values of these securities with the assistance of third- party valuating specialists (see Note 5).
As of December 31, 2010 and 2011, interest receivable amounted to $ 15,324 and $ 16,352, respectively, and is included within other current assets in the balance sheets. During 2011 the Company did not recognize any other-than-temporary loss and recognized a gain of $ 2,017 on sale of auction rate securities that were impaired in 2010. The other-than-temporary loss recognized in earnings during 2010 was $ 785 relating to auction rate securities. The Company recognized in 2009 other-than-temporary impairment in a total amount of $ 3,134 related to its auction rate securities loss and a gain of $ 1,857 on sale of marketable securities that were impaired in 2008. The Company may recognize additional losses in the future should the market prospects of the issuers of these securities continue to deteriorate.

X
- Details
Name: | us-gaap_MarketableSecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 + Details
Name: | us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration