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Intangible assets, net (Tables) | 3 Months Ended
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Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract] |
Intangible Assets Other than Goodwill | Intangible assets other than goodwill consist of the following:
(In thousands) |  | Amortization period |  | March 31, 2017 |  |  | December 31, 2016 |
Gross amount: |  |  |  |  |  |  |  |  |  |
Software developed for internal use |  | 3-10 years |  |  | 13,762 |  |  |  | 11,438 |
Acquired proprietary technology |  | 5 years |  |  | 11,382 |  |  |  | 13,532 |
Customer relationships |  | 7-10 years |  |  | 34,986 |  |  |  | 34,986 |
Trade names |  | 20 years |  |  | 16,357 |  |  |  | 18,057 |
Domain names |  | 20 years |  |  | 191 |  |  |  | 191 |
Databases |  | 5-10 years |  |  | 31,292 |  |  |  | 31,292 |
Non-competition agreements |  | 2-5 years |  |  | 1,768 |  |  |  | 1,768 |
|  |  |  |  | 109,738 |  |  |  | 111,264 |
Accumulated amortization: |  |  |  |  |  |  |  |  |  |
Software developed for internal use |  |  |  |  | (729 | ) |  |  | (505 | )
Acquired proprietary technology |  |  |  |  | (2,986 | ) |  |  | (2,660 | )
Customer relationships |  |  |  |  | (6,037 | ) |  |  | (4,840 | )
Trade names |  |  |  |  | (1,073 | ) |  |  | (916 | )
Domain names |  |  |  |  | (13 | ) |  |  | (10 | )
Databases |  |  |  |  | (4,257 | ) |  |  | (3,354 | )
Non-competition agreements |  |  |  |  | (614 | ) |  |  | (448 | )
|  |  |  |  | (15,709 | ) |  |  | (12,733 | )
Net intangible assets: |  |  |  |  |  |  |  |  |  |
Software developed for internal use |  |  |  |  | 13,033 |  |  |  | 10,933 |
Acquired proprietary technology |  |  |  |  | 8,396 |  |  |  | 10,872 |
Customer relationships |  |  |  |  | 28,949 |  |  |  | 30,146 |
Trade names |  |  |  |  | 15,284 |  |  |  | 17,141 |
Domain names |  |  |  |  | 178 |  |  |  | 181 |
Databases |  |  |  |  | 27,035 |  |  |  | 27,938 |
Non-competition agreements |  |  |  |  | 1,154 |  |  |  | 1,320 |
|  |  |  | $ | 94,029 |  |  | $ | 98,531 |
Schedule of Estimated Amortization Expenses | As of March 31, 2017, estimated amortization expenses related to the Company’s intangible assets for the remainder of 2017 through 2022 and thereafter are as follows:
(In thousands) |  |  |  |
Year |  | March 31, 2017 |
Remainder of 2017 |  | $ | 10,173 |
2018 |  |  | 13,725 |
2019 |  |  | 13,447 |
2020 |  |  | 12,810 |
2021 |  |  | 9,856 |
2022 and thereafter |  |  | 34,018 |
Total |  | $ | 94,029 |

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