v3.19.3

ACQUIRED INTANGIBLE ASSETS (Tables) | 9 Months Ended
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Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite Lived Intangible Assets | The changes to the carrying value of intangible assets were as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Acquired intangible assets, net, beginning of the period | $ | 84,216 |  |  | $ | 85,514 |  |  | $ | 77,102 |  |  | $ | 14,334 |
Acquisitions | — |  |  | — |  |  | 14,559 |  |  | 75,871 |
Amortization expense | (3,841 | ) |  | (4,384 | ) |  | (11,286 | ) |  | (9,075 | )
Transfer to assets held for sale (Note 8) | (7,582 | ) |  | — |  |  | (7,582 | ) |  | — |
Acquired intangible assets, net, end of the period | $ | 72,793 |  |  | $ | 81,130 |  |  | $ | 72,793 |  |  | $ | 81,130 |
The following table presents the detail of acquired intangible assets as of the periods presented (in thousands):
| Balance at September 30, 2019
Cost |  | Accumulated Amortization |  | Net
Technology assets | 54,630 |  |  | (30,682 | ) |  | 23,948 |
Customer assets | 44,045 |  |  | (6,089 | ) |  | 37,956 |
Trade name | 11,300 |  |  | (3,767 | ) |  | 7,533 |
Other | 5,299 |  |  | (1,943 | ) |  | 3,356 |
Total | $ | 115,274 |  |  | $ | (42,481 | ) |  | $ | 72,793 |
| Balance at December 31, 2018
Cost |  | Accumulated Amortization |  | Net
Technology assets | $ | 45,978 |  |  | $ | (28,420 | ) |  | $ | 17,558 |
Customer assets | 57,109 |  |  | (8,068 | ) |  | 49,041 |
Trade name | 11,300 |  |  | (1,648 | ) |  | 9,652 |
Other | 2,246 |  |  | (1,395 | ) |  | 851 |
Total | $ | 116,633 |  |  | $ | (39,531 | ) |  | $ | 77,102 |
Schedule of Future Amortization Expense of Intangible Assets | The total estimated future amortization expense of these intangible assets as of September 30, 2019 is as follows (in thousands):
2019 (remaining 3 months) | $ | 3,714 |
2020 | 12,800 |
2021 | 11,829 |
2022 | 10,134 |
2023 | 8,917 |
Thereafter | 25,399 |
Total | $ | 72,793 |

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