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SEGMENT REPORTING, GEOGRAPHIC INFORMATION, AND SIGNIFICANT CUSTOMERS - Summary of Significant Customers (Detail) - Customer concentration risk | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenues |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 27.00% | 69.00% | 49.00%
Revenues | Samsung Electronics |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 27.00% | 0.00% | 0.00%
Revenues | Apple Inc. |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk |  | 69.00% | 0.00%
Revenues | Customer A |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk |  | 0.00% | 20.00%
Revenues | Customer B |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk |  |  | 18.00%
Revenues | Customer C |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk |  |  | 11.00%
Outstanding accounts and other receivables | Customer B |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 22.00% | 0.00% |
Outstanding accounts and other receivables | Customer E |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 0.00% | 55.00% |
Outstanding accounts and other receivables | Customer F |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 0.00% | 36.00% |

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