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CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS - Schedule Showing Break-down of the Company's Total Short-term Investment and Long-term Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total investments | $ 3,129 | $ 5,224
Total Investments | 5,224 | 5,224
Cost Method Investments |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total investments | 3,129 | 3,129
Equity Method Investments |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total investments |  | 2,095
Available For Sale Securities |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total Investments using Trading Method | 2,095 |
UTStarcom Hong Kong Holdings Ltd. | Cost Method Investments |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total investments | 3,129 | 3,129
Aceland |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total Investments using Trading Method | 2,100 |
Aceland | Equity Method Investments |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total investments |  | $ 2,095
Aceland | Available For Sale Securities |  |
CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS |  |
Total Investments using Trading Method | $ 2,095 |

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