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COMPONENTS OF THE COMPANY'S CONDENSED CONSOLIDATED BALANCE SHEETS | 3 Months Ended
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Mar. 31, 2019
Balance Sheet Related Disclosures [Abstract] |
Supplemental Balance Sheet Disclosures | COMPONENTS OF THE COMPANY’S CONDENSED CONSOLIDATED BALANCE SHEETS: Accounts Receivable
(In thousands) | March 31, 2019 |  | December 31, 2018
Accounts receivable trade | $ | 63,340 |  |  | $ | 54,055 |
Allowances for ship and debit | (39,168 | ) |  | (40,118 | )
Allowances for stock rotation and rebate | (3,101 | ) |  | (2,159 | )
Allowances for doubtful accounts | (526 | ) |  | (706 | )
Total | $ | 20,545 |  |  | $ | 11,072 |
Inventories
(In thousands) | March 31, 2019 |  | December 31, 2018
Raw materials | $ | 40,969 |  |  | $ | 41,138 |
Work-in-process | 21,897 |  |  | 15,612 |
Finished goods | 22,214 |  |  | 24,107 |
Total | $ | 85,080 |  |  | $ | 80,857 |
Prepaid Expenses and Other Current Assets
(In thousands) | March 31, 2019 |  | December 31, 2018
Prepaid legal fees | $ | 1,866 |  |  | $ | 181 |
Prepaid income tax | 4,481 |  |  | 3,081 |
Prepaid maintenance agreements | 2,161 |  |  | 2,047 |
Interest receivable | 457 |  |  | 595 |
Advance to suppliers | 3,590 |  |  | 2,157 |
Other | 4,243 |  |  | 3,854 |
Total | $ | 16,798 |  |  | $ | 11,915 |
Intangible Assets
| March 31, 2019 |  | December 31, 2018
(In thousands) | Gross |  | Accumulated Amortization |  | Net |  | Gross |  | Accumulated Amortization |  | Net
Domain name | $ | 1,261 |  |  | $ | — |  |  | $ | 1,261 |  |  | $ | 1,261 |  |  | $ | — |  |  | $ | 1,261 |
In-process research and development | 4,690 |  |  | — |  |  | 4,690 |  |  | 4,690 |  |  | — |  |  | 4,690 |
Developed technology | 33,270 |  |  | (23,258 | ) |  | 10,012 |  |  | 33,270 |  |  | (22,464 | ) |  | 10,806 |
Customer relationships | 20,030 |  |  | (16,947 | ) |  | 3,083 |  |  | 20,030 |  |  | (16,520 | ) |  | 3,510 |
Technology licenses | 1,176 |  |  | (149 | ) |  | 1,027 |  |  | 1,000 |  |  | (115 | ) |  | 885 |
Total | $ | 60,427 |  |  | $ | (40,354 | ) |  | $ | 20,073 |  |  | $ | 60,251 |  |  | $ | (39,099 | ) |  | $ | 21,152 |
The estimated future amortization expense related to finite-lived intangible assets at March 31, 2019, is as follows:
Fiscal Year | Estimated Amortization (In thousands)
2019 (remaining nine months) | $ | 3,644 |
2020 | 3,675 |
2021 | 2,809 |
2022 | 1,731 |
2023 | 1,489 |
Thereafter | 774 |
Total (1) | $ | 14,122 |
_______________
(1) | The total above excludes $4.7 million of in-process research and development that will be amortized, upon completion of development, over the estimated useful life of the technology.
Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss for the three months ended March 31, 2019 and 2018, were as follows:
| Unrealized Gains and Losses on Marketable Securities |  | Defined Benefit Pension Items |  | Foreign Currency Items |  | Total
| Three Months Ended |  | Three Months Ended |  | Three Months Ended |  | Three Months Ended
| March 31, |  | March 31, |  | March 31, |  | March 31,
(In thousands) | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018
Beginning balance | $ | (266 | ) |  | $ | (427 | ) |  | $ | (712 | ) |  | $ | (1,237 | ) |  | $ | (711 | ) |  | $ | (475 | ) |  | $ | (1,689 | ) |  | $ | (2,139 | )
Other comprehensive income (loss) before reclassifications | 334 |  |  | (238 | ) |  | — |  |  | — |  |  | (22 | ) |  | (37 | ) |  | 312 |  |  | (275 | )
Amounts reclassified from accumulated other comprehensive loss | — |  |  | — |  |  | 16 |  | (1 | ) | 32 |  | (1 | ) | — |  |  | — |  |  | 16 |  |  | 32 |
Net-current period other comprehensive income (loss) | 334 |  |  | (238 | ) |  | 16 |  |  | 32 |  |  | (22 | ) |  | (37 | ) |  | 328 |  |  | (243 | )
Ending balance | $ | 68 |  |  | $ | (665 | ) |  | $ | (696 | ) |  | $ | (1,205 | ) |  | $ | (733 | ) |  | $ | (512 | ) |  | $ | (1,361 | ) |  | $ | (2,382 | )
_______________
(1) | This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost for the three months ended March 31, 2019 and 2018.

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