v3.19.3.a.u2

Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 163,178 | $ 153,798 | $ 135,461 | $ 122,234 | $ 115,095 | $ 106,963 | $ 97,423 | $ 92,288 | $ 574,671 | $ 411,769 | $ 286,752
Costs and expenses |  |  |  |  |  |  |  |  |  |  |
Curriculum and teaching | 21,925 | 21,336 | 13,308 | 6,701 | 6,625 | 6,351 | 6,007 | 4,307 | 63,270 | 23,290 | 6,609
Servicing and support | 27,372 | 27,351 | 23,993 | 20,174 | 18,087 | 16,586 | 17,297 | 15,233 | 98,890 | 67,203 | 50,767
Technology and content development | 35,504 | 34,132 | 26,043 | 19,794 | 18,376 | 16,361 | 15,235 | 13,840 | 115,473 | 63,812 | 45,926
Marketing and sales | 82,164 | 93,521 | 89,749 | 76,961 | 49,033 | 60,548 | 58,376 | 53,058 | 342,395 | 221,015 | 150,923
General and administrative | 37,549 | 42,040 | 28,408 | 23,023 | 19,666 | 18,974 | 22,480 | 21,869 | 131,020 | 82,989 | 62,665
Impairment charge | 0 | 70,379 | 0 | 0 |  |  |  |  | 70,379 | 0 | 0
Total costs and expenses | 204,514 | 288,759 | 181,501 | 146,653 | 111,787 | 118,820 | 119,395 | 108,307 | 821,427 | 458,309 | 316,890
Loss from operations | (41,336) | (134,961) | (46,040) | (24,419) | 3,308 | (11,857) | (21,972) | (16,019) | (246,756) | (46,540) | (30,138)
Interest income | 713 | 924 | 1,814 | 2,349 | 2,120 | 1,799 | 912 | 342 | 5,800 | 5,173 | 371
Interest expense | (5,289) | (5,651) | (2,424) | (55) | (27) | (27) | (27) | (27) | (13,419) | (108) | (87)
Other expense, net | 386 | (710) | (13) | (370) | (229) | (273) | (825) | (395) | (707) | (1,722) | (866)
Loss before income taxes | (45,526) | (140,398) | (46,663) | (22,495) | 5,172 | (10,358) | (21,912) | (16,099) | (255,082) | (43,197) | (30,720)
Income tax benefit (expense) | 942 | (714) | 18,691 | 941 | (340) | 414 | 3,565 | 1,228 | 19,860 | 4,867 | 1,297
Net loss | $ (44,584) | $ (141,112) | $ (27,972) | $ (21,554) | $ 4,832 | $ (9,944) | $ (18,347) | $ (14,871) | $ (235,222) | $ (38,330) | $ (29,423)
Net income (loss) per share, basic (in dollars per share) | $ (0.70) | $ (2.23) | $ (0.46) | $ (0.37) | $ 0.08 | $ (0.17) | $ (0.33) | $ (0.28) |  |  |
Net income (loss) per share, diluted (in dollars per share) |  |  |  |  | $ 0.08 | $ (0.17) | $ (0.33) | $ (0.28) |  |  |
Weighted-average shares used in computing net income (loss) per share, basic (in shares) | 63,481,130 | 63,358,890 | 60,516,662 | 58,138,692 | 57,924,666 | 57,663,361 | 54,981,192 | 52,687,299 |  |  |
Weighted-average shares used in computing net income (loss) per share, diluted (in shares) |  |  |  |  | 60,666,682 | 57,663,361 | 54,981,192 | 52,687,299 |  |  |

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