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BALANCE SHEET COMPONENTS (Tables) | 9 Months Ended
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Sep. 30, 2018
Balance Sheet Components [Abstract] |
Schedule of Additional Balance Sheet Components | The components of certain balance sheet amounts are as follows (in thousands):
| September 30, 2018 |  | December 31, 2017
Cash, cash equivalents and restricted cash: |  |  |
Cash | $ | 54,709 |  |  | $ | 61,703 |
Cash equivalents | 77,497 |  |  | 73,608 |
| 132,206 |  |  | 135,311 |
Restricted cash | 3,003 |  |  | 3,167 |
| $ | 135,209 |  |  | $ | 138,478 |
Inventories: |  |  |
Finished goods | $ | 10,826 |  |  | $ | 7,779 |
Raw materials | 370 |  |  | 799 |
Reserve for obsolescence | (77 | ) |  | (180 | )
| $ | 11,119 |  |  | $ | 8,398 |
Other accrued expenses: |  |  |
Sales returns | $ | 437 |  |  | $ | 614 |
Employee-related expense | 5,802 |  |  | 5,568 |
Warehousing, inventory-related and other | 1,102 |  |  | 1,423 |
| $ | 7,341 |  |  | $ | 7,605 |
Deferred revenue: |  |  |
Unshipped product | $ | 2,307 |  |  | $ | 2,411 |
Auto ship advances | 1,801 |  |  | 1,665 |
Other | 354 |  |  | 379 |
| $ | 4,462 |  |  | $ | 4,455 |

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