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v2.3.0.11

FINANCIAL INSTRUMENTS: (Details 2) (USD $) In Millions | 6 Months Ended
--- | ---
Jun. 30, 2011 | Jun. 30, 2010
Change in fair value of Level 3 short term investments |  |
Balance at the beginning of the period | $ 1.2 | $ 3.1
Sales |  | (1.2)
Transfers in/out of Level 3 | (1.2) | (1.7)
Balance at the end of the period |  | 0.2
Corporate bonds |  |
Change in fair value of Level 3 short term investments |  |
Balance at the beginning of the period |  | 1.7
Sales |  | (1.2)
Transfers in/out of Level 3 |  | (0.3)
Balance at the end of the period |  | 0.2
Mortgage backed securities |  |
Change in fair value of Level 3 short term investments |  |
Balance at the beginning of the period | 1.2 | 1.4
Transfers in/out of Level 3 | $ (1.2) | $ (1.4)

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + Details
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- Definition Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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- Definition This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 + Details
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