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Net Loss per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2014
Net Loss per Common Share [Abstract] |
Calculation of net loss and number of shares used to compute basic and 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 | )
Anti-dilutive Securities Excluded from the Computation of Earnings per Share | 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 Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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