| Schedule of changes in goodwill |
The following table presents the changes in the carrying amount of goodwill by reportable segment on the Company’s condensed consolidated balance sheets for the periods indicated. | | | | | | | | | | | | | | | | | | | Graduate Program Segment | | Alternative Credential Segment | | Total | | | (in thousands) | | | | | | Balance as of December 31, 2019 | $ | — | | | $ | 418,350 | | | $ | 418,350 | | | Foreign currency translation adjustments | — | | | (10,490) | | | (10,490) | | | Balance as of September 30, 2020 | $ | — | | | $ | 407,860 | | | $ | 407,860 | |
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| Schedule of amortizable intangible assets |
The following table presents the components of amortizable intangible assets, net on the Company’s condensed consolidated balance sheets as of each of the dates indicated. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2020 | | | | | | December 31, 2019 | | | | | | | Estimated Average Useful Life (in years) | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | | (in thousands) | | | | | | | | | | | | | | Capitalized technology | 3-5 | | $ | 159,164 | | | $ | (66,861) | | | $ | 92,303 | | | $ | 142,712 | | | $ | (41,106) | | | $ | 101,606 | | Capitalized content development | 4-5 | | 198,568 | | | (78,729) | | | 119,839 | | | 167,758 | | | (54,736) | | | 113,022 | | | University client relationships | 9-10 | | 106,384 | | | (19,483) | | | 86,901 | | | 110,344 | | | (12,419) | | | 97,925 | | Trade names and domain names | 5-10 | | 25,613 | | | (8,251) | | | 17,362 | | | 26,462 | | | (5,940) | | | 20,522 | | Total amortizable intangible assets, net | | | $ | 489,729 | | | $ | (173,324) | | | $ | 316,405 | | | $ | 447,276 | | | $ | (114,201) | | | $ | 333,075 | |
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| Schedule of estimated future amortization expense for amortizable intangible assets |
The following table presents the estimated future amortization expense of the Company’s amortizable intangible assets placed in service as of September 30, 2020. | | | | | | | Future Amortization Expense | | (in thousands) | | Remainder of 2020 | $ | 20,577 | | | 2021 | 78,471 | | | 2022 | 62,124 | | | 2023 | 44,691 | | | 2024 | 27,366 | | | Thereafter | 47,351 | | | Total | $ | 280,580 | |
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