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Net loss per share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Net loss per share | Net loss per share The following table presents the calculations of basic and diluted net loss per share:
|  |  | Year ended December 31,
(in thousands, except per share data) |  |  |  |  | 2020 |  | 2019 |  | 2018
Numerator: |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  | $ | (66,783) |  |  | $ | (14,642) |  |  | $ | (109,034) |
Denominator: |  |  |  |  |  |  |  |  |
Weighted-average common shares - basic and diluted for Class A and Class B common stock |  |  |  |  | 149,037 |  |  | 144,891 |  |  | 139,495 |
Basic and diluted net loss per share |  |  |  |  | $ | (0.45) |  |  | $ | (0.10) |  |  | $ | (0.78) |
The following potentially dilutive shares were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:
|  |  | Year ended December 31,
(in thousands) |  |  |  |  | 2020 |  | 2019 |  | 2018
Anti-dilutive stock-based awards |  |  |  |  | 15,856 |  |  | 13,527 |  |  | 15,834 |
The Company has the intent and ability to deliver cash up to the principal amount of the 2022 Notes and 2025 Notes subject to conversion, based on the Company’s current and projected liquidity. As such, no shares associated with the 2022 Note and 2025 Note conversion were included in the Company’s weighted-average number of common shares outstanding for any periods presented. The Company’s 2022 Notes mature on April 15, 2022 and the 2025 Notes mature on November 15, 2025, unless earlier repurchased or converted into shares of Class A common stock under certain circumstances as described further in Note 4 Financing Arrangements. The 2022 Notes and 2025 Notes are convertible into cash, shares of the Company’s Class A common stock, or a combination thereof, at the Company’s election. While the Company has the intent and ability to deliver cash up to the principal amount, the maximum number of shares issuable upon conversion of the 2022 Notes is 20.6 million shares of Class A common stock and 20.8 million shares of Class A common stock upon conversion of the 2025 Notes. Additionally, the calculation of weighted-average shares outstanding for the year ended December 31, 2020, 2019 and 2018 excludes approximately 9.2 million shares effectively repurchased and held in treasury stock on the Consolidated Balance Sheets as a result of the Prepaid Forward transaction entered into in connection with the 2022 Note offering. The rights of the holders of Class A common stock and Class B common stock are identical, except with respect to voting and conversion. Each share of Class A common stock is entitled to one vote per share and each share of Class B common stock is entitled to ten votes per share. Each share of Class B common stock is convertible at any time at the option of the stockholder into one share of Class A common stock and has no expiration date. Each share of Class B common stock will convert automatically into one share of Class A common stock upon the date when the outstanding shares of Class B common stock represent less than 10% of the aggregate number of shares of common stock then outstanding. Class A common stock is not convertible into Class B common stock. The computation of the diluted net loss per share of Class A common stock assumes the conversion of Class B common stock.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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