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CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS (Schedule of Total Long-term Investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Apr. 07, 2015	Dec. 31, 2014
Investment Holdings [Line Items]
Long-term investments	$ 26,022		$ 59,799
Cost-method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	12,094		2,371
Equity Method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	8,228		9,228
Available-for-sale Securities [Member]
Investment Holdings [Line Items]
Long-term investments	$ 5,700		$ 48,200
Cortina [Member] | Cost-method Investments [Member]
Investment Holdings [Line Items]
Long-term investments
GCT Semiconductor, Inc. [Member] | Cost-method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	$ 811		$ 811
Xalted Networks [Member] | Cost-method Investments [Member]
Investment Holdings [Line Items]
Long-term investments
UTStarcom Hong Kong Holdings Ltd [Member] | Cost-method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	$ 10,000
UTStarcom Hong Kong Holdings Ltd [Member] | Available-for-sale Securities [Member]
Investment Holdings [Line Items]
Long-term investments		$ 20,000	$ 20,200
SBI [Member] | Cost-method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	$ 1,283		1,560
ACELAND [Member] | Equity Method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	1,109		2,109
Shareholder Loan to Aceland [Member] | Equity Method Investments [Member]
Investment Holdings [Line Items]
Long-term investments	$ 7,119		$ 7,119
UiTV Media Inc [Member] | Equity Method Investments [Member]
Investment Holdings [Line Items]
Long-term investments
UiTV Media Inc [Member] | Available-for-sale Securities [Member]
Investment Holdings [Line Items]
Long-term investments			$ 20,000
Aio TV Inc [Member] | Available-for-sale Securities [Member]
Investment Holdings [Line Items]
Long-term investments	$ 5,700		$ 8,000

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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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