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Stockholders' Equity | 9 Months Ended
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Sep. 30, 2014
Stockholders' Equity Note [Abstract] |
Stockholders' Equity Note Disclosure [Text Block] | 9. Stockholders’ Equity Significant Changes in Stockholders’ Equity During the nine months ended September 30, 2014, additional paid-in capital increased by $9.2 million. $8.2 million of this increase is attributable to (i) $4.6 million in proceeds, net of costs, from a recent registered offering, (ii) $1.0 million in proceeds received from the exercise of warrants to purchase a total of 800,000 shares of the Company’s common stock and (iii) $2.5 million being the fair value of these warrants reclassified from liabilities. See the April 2014 Offering discussion below and Note 10 for additional information. Sh elf Registration On May 15, 2012, the Company filed a Shelf Registration which was declared effective by the SEC on May 21, 2012. The Shelf Registration permits the Company to sell, from time to time, up to an aggregate of $50.0 million of various securities, including common stock, preferred stock, warrants to purchase common stock or preferred stock and units consisting of one or more shares of common stock, shares of preferred stock, warrants, or any combination of such securities. However, the Company may not sell its securities in a primary offering pursuant to the Shelf Registration or any other registration statement on Form S-3 with a value exceeding one-third of its public float in any 12-month period (unless the Company’s public float rises to $75.0 million or more). The Shelf Registration is intended to provide the Company with additional flexibility to access capital markets for general corporate purposes, subject to market conditions and the Company's capital needs. April 2014 Offering On April 1, 2014, the Company entered into a placement agent agreement with Roth Capital Partners, LLC and Craig-Hallum Capital Group LLC related to the registered direct offering (the “Offering”) of an aggregate of 2,030,000 shares of the Company’s common stock together with warrants to purchase up to 812,000 shares of common stock. The Offering was made pursuant to the Company’s Shelf Registration discussed above. On April 4, 2014, the Company closed the Offering in which it sold 2,030,000 shares of common stock and warrants to purchase 812,000 shares of common stock. The shares of common stock and warrants were sold in units at $3.40 per unit, with each unit consisting of one share of common stock and 0.4 of one warrant to purchase one share of common stock at an exercise price of $4.20 per share. The Company received gross proceeds of $6.9 million and net proceeds of $6.1 million after deducting placement agent fees and other offering expenses. The Offering warrants are within the scope of ASC 815-40 and are required to be recorded as liabilities (see Note 10). Accordingly, of the $6.1 million in net proceeds, $4.6 million was allocated to the common stock and included in additional paid-in capital and $1.5 million was allocated to the warrant liability based on the fair value of the warrants on the issuance date. Additionally, $0.2 million of the placement agent fees and other offering costs were allocated to the Offering warrants, based on the relative fair value of the Offering warrants and the common stock on the issuance date, and is included in other expense, net in the accompanying statement of comprehensive loss for the three and nine months ended September 30, 2014. The Company intends to use the net proceeds for general corporate purposes, which may include working capital, general and administrative expenses, capital expenditures and implementation of its strategic priorities. The Company may also use a portion of the net proceeds to acquire or invest in businesses, products and technologies that are complementary to its current business, although there are no present commitments or agreements for any such transactions. November 2014 Offering On November 4, 2014, the Company entered into subscription agreements to sell 1,385,000 shares of common stock, Series A Warrants to purchase up to an aggregate of 388,393 shares of common stock with an exercise price of $3.25 per share, for a combined purchase price of $2.80 per share and 0.28 of one Series A Warrant, and Series B Warrants to purchase up to an aggregate of 168,571 shares of common stock with an exercise price of $0.01 per share for a purchase price of $2.79 per Series B Warrant, pursuant to the Shelf Registration. The Company expects to receive net proceeds of approximately $3.8 million after deducting placement agent fees and other estimated offering expenses. See Note 16 for additional information. Common Stock Purchase Agreement with Lincoln Park Capital (“LPC”) On October 7, 2011, the Company signed a Purchase Agreement with LPC, together with a Registration Rights Agreement, whereby LPC agreed to purchase up to $10.0 million of the Company’s common stock over a 30-month period ending April 24, 2014. This expired unused in April 2014.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d),(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Article 4 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Preferred Stock -URI http://asc.fasb.org/extlink&oid=6521494 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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