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Revenues (Tables) | 12 Months Ended
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Dec. 31, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table sets forth our total net revenues for the periods shown disaggregated for our Chegg Services and Required Materials product lines (in thousands, except percentages):
| Years Ended December 31, |  | Change in 2019 |  | Change in 2018
| 2019 |  | 2018 |  | 2017 |  | $ |  | % |  | $ |  | %
Chegg Services | $ | 332,221 |  |  | $ | 253,985 |  |  | $ | 185,683 |  |  | $ | 78,236 |  |  | 31 | % |  | $ | 68,302 |  |  | 37 | %
Required Materials | 78,705 |  |  | 67,099 |  |  | 69,383 |  |  | 11,606 |  |  | 17 |  |  | (2,284 | ) |  | (3 | )
Total net revenues | $ | 410,926 |  |  | $ | 321,084 |  |  | $ | 255,066 |  |  | $ | 89,842 |  |  | 28 |  |  | $ | 66,018 |  |  | 26 |
Schedule of Accounts Receivable | The following table presents our accounts receivable, net, deferred revenue, and contract asset balances (in thousands, except percentages):
| December 31, |  | Change
| 2019 |  | 2018 |  | $ |  | %
Accounts receivable, net | $ | 11,529 |  |  | $ | 12,733 |  |  | $ | (1,204 | ) |  | (9 | )%
Deferred revenue | 18,780 |  |  | 17,418 |  |  | 1,362 |  |  | 8 |
Contract assets | 3,531 |  |  | 337 |  |  | 3,194 |  |  | n/m |
_______________________________________ n/m - not meaningful

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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