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Loss Per Common Share | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Loss Per Common Share | Loss Per Common Share Basic loss per common share is determined by dividing net loss by the weighted average number of common shares outstanding during the period. Diluted loss per share is determined by dividing net loss by the weighted average number of common shares outstanding, assuming all potentially dilutive shares were issued. We apply the treasury stock method to determine the dilutive weighted average common shares represented by unvested restricted stock units and employee stock purchase plan (“ESPP”) shares. The following table summarizes the basic and diluted loss per share calculations (in thousands, except per share amounts):
| Three Months Ended |  |  |  | Six Months Ended |  |
| June 30, |  |  |  | June 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Numerator |  |  |  |  |  |  |
Net loss | $ | (34,245) |  |  | $ | (15,160) |  |  | $ | (120,223) |  |  | $ | (43,447) |
Denominator |  |  |  |  |  |  |
Basic and diluted weighted average common shares (1) | 225,853 |  |  | 225,052 |  |  | 225,855 |  |  | 224,854 |
Loss per common share: |  |  |  |  |  |  |
Basic and diluted | $ | (0.15) |  |  | $ | (0.07) |  |  | $ | (0.53) |  |  | $ | (0.19) |
(1) | Approximate number of unvested restricted stock units and stock to be issued pursuant to the ESPP that have been excluded from the computation of diluted loss per share as the effect would be anti-dilutive when results from operations are at a net loss position. | 707 |  |  | 705 |  |  | 955 |  |  | 826 |

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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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