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Internal-Use Software Development Costs (Tables) | 9 Months Ended
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Sep. 30, 2017
Research and Development [Abstract] |
Schedule of Capitalized Computer Software | Internal-use software development costs were as follows (in thousands):
|  | September 30, 2017 |  | December 31, 2016
Internal use software development costs, gross |  | $ | 41,902 |  |  | $ | 33,545 |
Less: Accumulated amortization |  | (24,582 | ) |  | (18,006 | )
Internal use software development costs, net |  | $ | 17,320 |  |  | $ | 15,539 |
Schedule of Capitalized Computer Software Future Amortization Expense | Future amortization expense with respect to capitalized software development costs as of September 30, 2017, is estimated as follows (in thousands):
Years Ending December 31,
2017 |  | $ | 2,409 |
2018 |  | 8,431 |
2019 |  | 5,153 |
2020 |  | 1,327 |
Total amortization expense |  | $ | 17,320 |

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