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CASH, CASH EQUIVALENTS AND INVESTMENTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH, CASH EQUIVALENTS AND INVESTMENTS
Bank notes	$ 296,000	$ 2,372,000
Sale of bank notes	0	0	0
Long-term investments	62,443,000	19,226,000
Cost Method
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	21,638,000	9,426,000
Cost Method | Cortina
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	3,348,000	3,348,000
Cost Method | GCT SemiConductor, Inc.
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	811,000	3,000,000
Cost Method | Xalted Networks
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	279,000	1,133,000
Cost Method | SBI
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	2,306,000	1,945,000
Cost Method | iTV Media Inc.
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	14,894,000
Equity Method
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	9,805,000	9,800,000
Equity Method | ACELAND
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	2,109,000	2,109,000
Equity Method | Beijing Bodashutong Technology
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	577,000	572,000
Equity Method | Shareholder Loan to ACELAND
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	7,119,000	7,119,000
Available for sale
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	31,000,000
Available for sale | iTV Media Inc.
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	3,000,000
Available for sale | AioTV
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	8,000,000
Available for sale | UTStarcom Hong Kong Holdings Ltd.
CASH, CASH EQUIVALENTS AND INVESTMENTS
Long-term investments	$ 20,000,000
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
China | Minimum
CASH, CASH EQUIVALENTS AND INVESTMENTS
Maturity period of bank notes receivable	3 months
China | Maximum
CASH, CASH EQUIVALENTS AND INVESTMENTS
Maturity period of bank notes receivable	6 months

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- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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All other marketable securities, which aren't categorized as trading, available-for-sale, or held-to-maturity and which are not otherwise listed in the existing taxonomy, intended to be held for less than one year or the normal operating cycle, whichever is longer.

+ References

Reference 1: 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)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 2

-Article 5

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The cash inflow associated with the sale of a borrowing supported by a written promise to pay an obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15, 16

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585

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Maturity period of bank notes receivable.

+ References

No definition available.

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