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BALANCE SHEET COMPONENTS - Other Current Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017
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Balance Sheet Related Disclosures [Abstract] |  |  |  |
Accrued expenses | $ 15,539 | $ 18,241 |  |
Litigation settlement accrual | 18,000 | 0 |  |
Accrued compensation and benefits | 2,862 | 3,091 |  |
Warranty accrual | 4,328 | 3,840 | $ 3,984 | $ 3,601
Deferred revenue — short-term | 12,292 | 8,509 |  |
Customer deposits | 1,831 | 770 |  |
Reserve for sales returns | 1,165 | 1,219 |  |
Other payables | 8,677 | 32,943 |  |
Total | $ 64,694 | $ 68,613 |  |

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