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Loss Per Share | 6 Months Ended
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Jun. 30, 2013
Loss Per Share | (2) Loss Per Share The Company calculates basic loss per share by dividing loss attributable to common stockholders by the weighted average common shares outstanding during the period, excluding common stock subject to vesting provisions. In the three and six month periods ended June 30, 2013, the calculation of net loss attributable to common stockholders includes the effect of the deemed dividend to Series A Preferred Stock purchasers (see Note 7). Diluted loss per share is computed by dividing loss attributable to common stockholders by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding if the potential common shares had been issued. The Company’s potentially dilutive shares include Series A Convertible Preferred Stock, stock options and warrants for common stock. A reconciliation of the numerator and denominator used in the calculation of basic and diluted loss per share follows:
| Three Months Ended June 30, |  |  | Six Months Ended June 30, |
--- | --- | --- | --- | --- | ---
(In thousands, except shares and per share data) | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Net loss | $ |  | (1,199 | ) |  | $ |  | (1,146 | ) |  | $ |  |  | (2,270 | ) |  | $ |  |  | (2,553 | )
Less: Series A Preferred Stock deemed dividend | $ |  | (2,026 | ) |  | $ |  | — |  |  | $ |  |  | (2,026 | ) |  | $ |  |  | — |
Net loss available to common shareholders | $ |  | (3,225 | ) |  | $ |  | (1,146 | ) |  | $ |  |  | (4,296 | ) |  | $ |  |  | (2,553 | )
Weighted average shares of common stock outstanding |  | 4,946,932 |  |  |  | 2,030,499 |  |  |  | 3,998,704 |  |  |  | 2,030,499 |
Less: Weighted-average shares of unvested common stock |  | (2,7 83 | ) |  |  | (2,7 83 | ) |  |  | (2,7 83 | ) |  |  | (2,7 83 | )
Total weighted-average shares used in computing net loss per share attributed to common stockholders |  | 4,944,149 |  |  |  | 2,027,716 |  |  |  | 3,995,921 |  |  |  | 2,027,716 |
Basic and diluted loss per share | $ |  | (0.65 | ) |  | $ |  | (0.57 | ) |  | $ |  |  | (1.08 | ) |  | $ |  |  | (1.26 | )
Potentially dilutive securities representing 5.2 million and 606,000 weighted average shares of common stock were excluded for the three months ended June 30, 2013 and 2012, respectively, and potentially dilutive securities representing 3.3 million and 605,000 weighted average shares of common stock were excluded for the six months ended June 30, 2013 and 2012, respectively, because including them would have an anti-dilutive effect on net loss per share.

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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 Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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=6880815&loc=d3e20235-122688 Reference 4: 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 5: 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=16381557&loc=d3e4984-109258 Reference 6: 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 + Details
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