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Balance Sheet Details | 12 Months Ended
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Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract] |
Balance Sheet Details | Balance Sheet Details Cash, cash equivalents, and restricted cash consist of the following:
| December 31, 2019 |  | December 31, 2018
| (in thousands)
Cash and cash equivalents | $ | 92,708 |  |  | $ | 73,142 |
Short-term restricted cash | 349 |  |  | 645 |
Long-term restricted cash | 60 |  |  | 404 |
Total cash, cash equivalents and restricted cash | $ | 93,117 |  |  | $ | 74,191 |
As of December 31, 2019 and December 31, 2018, cash and cash equivalents included $20.4 million and $0 of money market funds, respectively. As of December 31, 2019 and 2018, the Company has restricted cash of $0.4 million and $1.0 million, respectively. The cash is restricted in connection with guarantees for certain import duties and office leases. Inventory consists of the following:
| December 31, 2019 |  | December 31, 2018
| (in thousands)
Work-in-process | $ | 14,525 |  |  | $ | 17,618 |
Finished goods | 16,985 |  |  | 24,120 |
| $ | 31,510 |  |  | $ | 41,738 |
Property and equipment consist of the following:
| Useful Life (in Years) |  | December 31, 2019 |  | December 31, 2018
|  |  | (in thousands)
Furniture and fixtures | 5 |  | $ | 2,199 |  |  | $ | 2,020 |
Machinery and equipment | 3-5 |  | 35,660 |  |  | 34,225 |
Masks and production equipment | 2-5 |  | 15,209 |  |  | 12,645 |
Software | 3 |  | 5,956 |  |  | 5,675 |
Leasehold improvements | 1-5 |  | 16,186 |  |  | 17,493 |
Construction in progress | N/A |  | 746 |  |  | 133 |
|  |  | 75,956 |  |  | 72,191 |
Less accumulated depreciation and amortization |  |  | (59,343 | ) |  | (53,787 | )
|  |  | $ | 16,613 |  |  | $ | 18,404 |
Depreciation expense for the years ended December 31, 2019, 2018, and 2017 was $7.3 million, $11.1 million, and $12.0 million, respectively. Accrued price protection liability consists of the following activity:
| Years Ended December 31,
| 2019 |  | 2018
| (in thousands)
Beginning balance | $ | 16,454 |  |  | $ | 21,571 |
Charged as a reduction of revenue | 24,449 |  |  | 34,288 |
Reversal of unclaimed rebates | (42 | ) |  | (2,413 | )
Payments | (28,304 | ) |  | (36,992 | )
Ending balance | $ | 12,557 |  |  | $ | 16,454 |
Accrued expenses and other current liabilities consist of the following:
| December 31, 2019 |  | December 31, 2018(1)
| (in thousands)
Accrued technology license payments | $ | 4,500 |  |  | $ | 4,500 |
Accrued professional fees | 861 |  |  | 1,270 |
Accrued engineering and production costs | 4,491 |  |  | 646 |
Accrued restructuring | 294 |  |  | 1,946 |
Accrued royalty | 923 |  |  | 980 |
Short-term lease liabilities | 4,810 |  |  | 1,214 |
Accrued customer credits | 832 |  |  | 1,204 |
Income tax liability | 65 |  |  | 784 |
Customer contract liabilities | 107 |  |  | 71 |
Accrued obligations to customers for price adjustments | 8,382 |  |  | 7,558 |
Accrued obligations to customers for stock rotation rights | 1,410 |  |  | 1,494 |
Other | 4,496 |  |  | 6,615 |
| $ | 31,171 |  |  | $ | 28,282 |
___________ (1) Due to the adoption of ASC 842 on January 1, 2019 with a cumulative effect adjustment to accumulated deficit, prior period amounts have not been adjusted to include short-term lease payment obligations. The following table summarizes the balances in accumulated other comprehensive income (loss) by component:
|  | Cumulative Translation Adjustments |  | Interest Rate Hedge |  | Total
| (in thousands)
Balance at December 31, 2017 |  | $ | 562 |  |  | $ | 477 |  |  | $ | 1,039 |
Other comprehensive income (loss) before reclassifications, net of tax |  | (1,572 | ) |  | 702 |  |  | (870 | )
Net current period other comprehensive income (loss) |  | (1,572 | ) |  | 702 |  |  | (870 | )
Cumulative effect of adoption of new accounting principles |  | 103 |  |  | — |  |  | 103 |
Balance at December 31, 2018 |  | (907 | ) |  | 1,179 |  |  | 272 |
Other comprehensive income (loss) before reclassifications, net of tax |  | 160 |  |  | (1,319 | ) |  | (1,159 | )
Net current period other comprehensive income (loss) |  | 160 |  |  | (1,319 | ) |  | (1,159 | )
Balance at December 31, 2019 |  | $ | (747 | ) |  | $ | (140 | ) |  | $ | (887 | )

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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