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Investments in Marketable Securities Available-for sale | 12 Months Ended
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Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities [Text Block] |
| Note 4. | Investments in Marketable Securities Available-for sale
Following is a summary of marketable securities as of December 31, 2011 and 2012:
|  | December 31, 2011 |
|  | Aggregate |  |  | Gross Unrealized |  |  | Gross Unrealized |  |  | Aggregate Market |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (in thousands) |
Time deposit with original maturities more than three months |  | $ | 150 |  |  |  | 15 |  |  |  | - |  |  |  | 165 |
|  | December 31, 2012 |
|  | Aggregate |  |  | Gross Unrealized |  |  | Gross Unrealized |  |  | Aggregate Market |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
|  | (in thousands) |
Time deposit with original maturities more than three months |  | $ | 150 |  |  |  | 22 |  |  |  | - |  |  |  | 172 |
The Company’s portfolio of available for sale marketable securities by contractual maturity or the expected holding period as of December 31, 2011 and 2012 is due in one year or less. Information on sales of available for sale marketable securities for the years ended December 31, 2010, 2011 and 2012 is summarized below.
Period |  | Proceeds from sales |  |  | Gross realized gains |  |  | Gross realized losses |
|  | (in thousands) |
Year 2010 |  | $ | 33,443 |  |  |  | 326 |  |  |  | (30 | )
Year 2011 |  | $ | 25,834 |  |  |  | 420 |  |  |  | (70 | )
Year 2012 |  | $ | 19,612 |  |  |  | 35 |  |  |  | (32 | )

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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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