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COMMON STOCK REPURCHASE AND ISSUANCE - Share Purchase Agreement and Subscription Agreement (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 11, 2014 | Mar. 10, 2014 | Jan. 17, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Equity, Class of Treasury stock |  |  |  |  |  |
Ordinary share, par value (in dollars per share) |  |  |  | $ 0.00375 | $ 0.00375 |
Value of shares repurchased |  |  |  | $ 4,096 | $ 3,695 | $ 10,308
UTSTARCOM HOLDINGS CORP |  |  |  |  |  |
Equity, Class of Treasury stock |  |  |  |  |  |
Ordinary share, par value (in dollars per share) |  |  |  |  | $ 0.00375 | $ 0.00375
Share Purchase Agreement |  |  |  |  |  |
Equity, Class of Treasury stock |  |  |  |  |  |
Shares repurchased under program |  |  | 3,883,875 |  |  |
Share price (in dollars per share) |  |  | $ 2.54 |  |  |
Value of shares repurchased |  |  | $ 9,900 |  |  |
Share Purchase Agreement | Shah Capital Opportunity Fund LP and Himanshu H Shah |  |  |  |  |  |
Equity, Class of Treasury stock |  |  |  |  |  |
Number of shares of common stock repurchased |  |  | 1,000,000 |  |  |
Share Purchase Agreement | Softbank America Inc |  |  |  |  |  |
Equity, Class of Treasury stock |  |  |  |  |  |
Number of shares in reporting entity sold by investee |  |  | 4,883,875 |  |  |
Ordinary share, par value (in dollars per share) |  |  | $ 0.00375 |  |  |
Subscription Agreement | Shah Capital Opportunity Fund LP and Himanshu H Shah |  |  |  |  |  |
Equity, Class of Treasury stock |  |  |  |  |  |
Ordinary share, par value (in dollars per share) | $ 2.67 |  |  |  |  |
Number of shares of common stock issued | 2,000,000 |  |  |  |  |
Premium percentage |  | 1.30% |  |  |  |
Threshold period of specified consecutive trading days within which premium common stock price was determined |  | 30 days |  |  |  |

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