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BALANCE SHEET COMPONENTS (Tables) | 9 Months Ended
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Sep. 30, 2019
Balance Sheet Components [Abstract] |
Schedule of Additional Balance Sheet Components | The components of certain balance sheet amounts are as follows (in thousands):
| September 30, 2019 |  | December 31, 2018
Cash, cash equivalents and restricted cash: |  |  |
Cash | $ | 17,711 |  |  | $ | 47,323 |
Cash equivalents | 83,402 |  |  | 85,330 |
| 101,113 |  |  | 132,653 |
Restricted cash | 2,881 |  |  | 2,998 |
| $ | 103,994 |  |  | $ | 135,651 |
Inventories: |  |  |
Finished goods | $ | 7,817 |  |  | $ | 11,171 |
Raw materials | 1,104 |  |  | 1,145 |
Reserve for obsolescence | (922 | ) |  | (151 | )
| $ | 7,999 |  |  | $ | 12,165 |
Other accrued expenses: |  |  |
Sales returns | $ | 290 |  |  | $ | 801 |
Employee-related expense | 1,998 |  |  | 4,051 |
Warehousing, inventory-related and other | 1,104 |  |  | 1,269 |
| $ | 3,392 |  |  | $ | 6,121 |
Deferred revenue: |  |  |
Unshipped product | $ | 1,171 |  |  | $ | 4,574 |
Auto ship advances | 1,983 |  |  | 1,876 |
Other | 148 |  |  | 345 |
| $ | 3,302 |  |  | $ | 6,795 |

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- Definition Schedule of Additional Balance Sheet Components [Table Text Block] + References No definition available. + Details
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