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Marketable Securities (Tables) | 3 Months Ended
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Mar. 31, 2012
Summary of Marketable Securities | Marketable Securities
|  | March 31, 2012 |  |  | December 31, 2011 |
|  |  |  |  | Unrealized |  |  | Fair |  |  |  |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Value |  |  | Cost |  |  | Gains |  |  | Value |
U.S. government securities |  | $ | 8 |  |  | $ | - |  |  | $ | 8 |  |  | $ | 10 |  |  | $ | - |  |  | $ | 10 |
Corporate securities |  |  | 10 |  |  |  |  |  |  |  | 10 |  |  |  | 8 |  |  |  |  |  |  |  | 8 |
Certificates of deposit |  |  | 13 |  |  |  |  |  |  |  | 13 |  |  |  | 13 |  |  |  |  |  |  |  | 13 |
Other |  |  | 25 |  |  |  | 2 |  |  |  | 27 |  |  |  | 25 |  |  |  |  |  |  |  | 25 |
Total marketable securities |  | $ | 56 |  |  | $ | 2 |  |  | $ | 58 |  |  | $ | 56 |  |  | $ | - |  |  | $ | 56 |

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- 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 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 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 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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