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The Company and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Schedule of Antidilutive Securities Excluded from Computation of Diluted Net Loss Per Share | The following table sets forth securities outstanding which were excluded from the computation of diluted net loss per share as their inclusion would be anti-dilutive (in thousands):
|  | December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Options outstanding to purchase common Stock |  |  | 337 |  |  |  | 307 |  |  |  | 522 |
Employee stock purchase plan |  |  | — |  |  |  | — |  |  |  | 44 |
Unvested restricted common stock units |  |  | 272 |  |  |  | 376 |  |  |  | 148 |
Convertible debt |  |  | 4,671 |  |  |  | 1,081 |  |  |  | 926 |
Outstanding warrants |  |  | 39,884 |  |  |  | 663 |  |  |  | — |
Total |  |  | 45,164 |  |  |  | 2,427 |  |  |  | 1,640 |
ASU 2014-09 |
Summary of Impact of Adoption of Accounting Standards | The following table summarizes the cumulative effect of the changes to the Company’s unaudited consolidated balance sheet as of January 1, 2018 due to the adoption of ASC 606 (in thousands):
|  | Balance as of December 31, 2017 |  |  | Adjustments due to ASC 606 |  |  | Balance as of January 1, 2018 |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net |  | $ | 1,681 |  |  | $ | 230 |  |  | $ | 1,911 |
Equity |  |  |  |  |  |  |  |  |  |  |  |
Accumulated deficit |  | $ | (224,688 | ) |  | $ | 230 |  |  | $ | (224,458 | )
The following tables summarize the current-period impacts of adopting ASC 606 on the Company’s unaudited consolidated balance sheet and statement of operations and comprehensive loss (in thousands):
|  | December 31, 2018 |
|  | As Reported |  |  | Effect of adoption |  |  | Balances without adoption of ASC 606 |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net |  | $ | 1,622 |  |  | $ | (220 | ) |  | $ | 1,402 |
Equity |  |  |  |  |  |  |  |  |  |  |  |
Accumulated deficit |  | $ | (235,867 | ) |  | $ | (220 | ) |  | $ | (236,087 | )
|  | For the Year Ended December 31, 2018 |
|  | As Reported |  |  | Effect of adoption |  |  | Balances without adoption of ASC 606 |
Product sales |  | $ | 15,053 |  |  | $ | — |  |  | $ | 15,053 |
Royalty and other |  |  | 1,547 |  |  |  | 10 |  |  |  | 1,557 |
Cost of net revenue |  |  | 6,346 |  |  |  | — |  |  |  | 6,346 |
Operating expenses |  |  | 21,080 |  |  |  | — |  |  |  | 21,080 |
Interest expense |  |  | (582 | ) |  |  | — |  |  |  | (582 | )
Other income, net |  |  | 12 |  |  |  | — |  |  |  | 12 |
Income tax provision |  |  | 13 |  |  |  | — |  |  |  | 13 |
Net loss |  | $ | (11,409 | ) |  | $ | 10 |  |  | $ | (11,399 | )
Net loss per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted |  | $ | (0.74 | ) |  | $ | — |  |  | $ | (0.74 | )

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