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CASH, CASH EQUIVALENTS AND INVESTMENTS (Details 9) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Combined fair value of the long term investments in available-for-sale securities | $ 53,971 |  |
Long-term investments | 74,588 | 62,443 |
Roll-forward of financial assets using unobservable inputs (Level 3) |  |  |
Less: Impairment Charge | (9,400) | (3,043) | (476)
Convertible Bond |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Combined fair value of the long term investments in available-for-sale securities | 45,971 |  |
Preferred Shares |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Combined fair value of the long term investments in available-for-sale securities | 8,000 |  |
Recurring |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Short-term investment |  | 296 |
Long-term investments | 53,971 | 31,000 |
Nonrecurring | Equity securities | Privately-held companies |  |  |
Roll-forward of financial assets using unobservable inputs (Level 3) |  |  |
Investments in financial assets | 20,600 | 31,400 |
Level 1 | Recurring |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Short-term investment |  | 296 |
Level 3 |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Combined fair value of the long term investments in available-for-sale securities | 54,000 |  |
Roll-forward of financial assets using unobservable inputs (Level 3) |  |  |
Investments in financial assets | 31,000 |  |
Less: Impairment Charge | (9,142) |  |
Investments in financial assets | 53,971 |  |
Level 3 | Convertible Bond |  |  |
Roll-forward of financial assets using unobservable inputs (Level 3) |  |  |
Investments in financial assets | 32,113 | 23,000 |
Level 3 | Preferred Shares |  |  |
Roll-forward of financial assets using unobservable inputs (Level 3) |  |  |
Investments in financial assets |  | 8,000 |
Level 3 | Recurring |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Long-term investments | $ 53,971 | $ 31,000 |
Minimum |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Maturity period of bank notes receivable | 3 months |  |
Maximum |  |  |
CASH, CASH EQUIVALENTS AND INVESTMENTS |  |  |
Maturity period of bank notes receivable | 1 year |  |

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&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 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 + Details
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