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Net Loss per Common Share | 6 Months Ended
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Jun. 30, 2014
Net Loss per Common Share [Abstract] |
Net Loss per Common Share |
(9) | Net Loss per Common Share
Basic net loss per share is determined by dividing net loss by the weighted average shares of common stock outstanding during the period. Diluted net loss per share is determined by dividing net loss by diluted weighted average shares outstanding. Diluted weighted average shares reflects the dilutive effect, if any, of potentially dilutive common shares, such as stock options and warrants calculated using the treasury stock method. In periods with reported net operating losses, all common stock options and warrants are deemed anti-dilutive such that basic net loss per share and diluted net loss per share are equal. However, in certain periods in which the exercise price of the warrants was less than the last reported sales price of Delcath’s common stock on the final trading day of the period and there is a gain recorded pursuant to the change in fair value of the warrant derivative liability, the impact of gains related to the mark-to-market adjustment of the warrants outstanding at the end of the period is reversed and the treasury stock method is used to determine diluted earnings per share. The calculation of net loss and the number of shares used to compute basic and diluted earnings per share for the three and six month periods ended June 30, 2014 and 2013 are as follows:
|  | Three months ended June 30, |  |  | Six months ended June 30, |
(in thousands, except share data) |  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Net loss – basic |  | $ | (4,600 | ) |  | $ | (5,482 | ) |  | $ | (9,878 | ) |  | $ | (18,328 | )
Adjustment for gain on warrant derivative liability |  |  | (356 | ) |  |  | — |  |  |  | (363 | ) |  |  | — |
Net loss – diluted |  | $ | (4,956 | ) |  | $ | (5,482 | ) |  | $ | (10,241 | ) |  | $ | (18,328 | )
Weighted average shares outstanding – basic |  |  | 9,426,169 |  |  |  | 6,023,785 |  |  |  | 9,363,123 |  |  |  | 5,683,380 |
Adjustment for warrant exercises |  |  | 54,764 |  |  |  | — |  |  |  | 99,594 |  |  |  | — |
Weighted average shares outstanding – diluted |  |  | 9,480,933 |  |  |  | 6,023,785 |  |  |  | 9,462,717 |  |  |  | 5,683,380 |
Net loss per share – basic |  | $ | (0.49 | ) |  | $ | (0.91 | ) |  | $ | (1.06 | ) |  | $ | (3.22 | )
Net loss per share – diluted |  | $ | (0.52 | ) |  | $ | (0.91 | ) |  | $ | (1.08 | ) |  | $ | (3.22 | )
The following potentially dilutive securities were excluded from the computation of earnings per share as of June 30, 2014 and 2013 because their effects would be anti-dilutive:
|  | June 30, |
|  | 2014 |  |  | 2013 |
Stock options |  |  | 199,230 |  |  |  | 323,417 |
Unvested restricted shares |  |  | 2,721 |  |  |  | 24,797 |
Warrants |  |  | 589,500 |  |  |  | 339,994 |
Total |  |  | 791,451 |  |  |  | 688,208 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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