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Quarterly Financial Information (Unaudited) | 12 Months Ended
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Dec. 31, 2013
Quarterly Financial Information (Unaudited) | Note 19. Quarterly Financial Information (Unaudited) The following tables summarize the Company’s quarterly financial information for the years ended December 31, 2013 and 2012 (in thousands except per share amounts):
|  | Three Months Ended |
|  | March 31, 2013 |  |  | June 30, 2013 |  |  | September 30, 2013 |  |  | December 31, 2013 |
Revenue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenue |  | $ | 9,733 |  |  | $ | 10,150 |  |  | $ | 10,542 |  |  | $ | 9,232 |
Cost of product revenue |  |  | 5,090 |  |  |  | 5,747 |  |  |  | 6,826 |  |  |  | 4,939 |
Gross profit on product revenue |  |  | 4,643 |  |  |  | 4,403 |  |  |  | 3,716 |  |  |  | 4,293 |
Government grants and cooperative agreements revenue |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and development |  |  | 2,700 |  |  |  | 3,506 |  |  |  | 4,363 |  |  |  | 4,618 |
Selling, general and administrative |  |  | 6,853 |  |  |  | 7,954 |  |  |  | 7,728 |  |  |  | 7,430 |
Amortization of intangible assets |  |  | 50 |  |  |  | 51 |  |  |  | 50 |  |  |  | 51 |
Total operating expenses |  |  | 9,603 |  |  |  | 11,511 |  |  |  | 12,141 |  |  |  | 12,099 |
Loss from operations |  |  | (4,960 | ) |  |  | (7,108 | ) |  |  | (8,425 | ) |  |  | (7,806 | )
Total non-operating income (expense), net |  |  | (5,241 | ) |  |  | 438 |  |  |  | (12,016 | ) |  |  | 1,999 |
Loss before income taxes |  |  | (10,201 | ) |  |  | (6,670 | ) |  |  | (20,441 | ) |  |  | (5,807 | )
Provision for income taxes |  |  | 51 |  |  |  | 54 |  |  |  | 60 |  |  |  | 53 |
Net loss |  | $ | (10,252 | ) |  | $ | (6,724 | ) |  | $ | (20,501 | ) |  | $ | (5,860 | )
Net loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.17 | ) |  | $ | (0.10 | ) |  | $ | (0.29 | ) |  | $ | (0.08 | )
Diluted |  | $ | (0.17 | ) |  | $ | (0.10 | ) |  | $ | (0.29 | ) |  | $ | (0.10 | )
|  | Three Months Ended |
|  | March 31, 2012 |  |  | June 30, 2012 |  |  | September 30, 2012 |  |  | December 31, 2012 |
Revenue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Product revenue |  | $ | 8,691 |  |  | $ | 9,224 |  |  | $ | 8,252 |  |  | $ | 10,528 |
Cost of product revenue |  |  | 5,514 |  |  |  | 5,574 |  |  |  | 4,411 |  |  |  | 5,117 |
Gross profit on product revenue |  |  | 3,177 |  |  |  | 3,650 |  |  |  | 3,841 |  |  |  | 5,411 |
Government grants and cooperative agreements revenue |  |  | 91 |  |  |  | — |  |  |  | — |  |  |  | — |
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research and development |  |  | 1,824 |  |  |  | 1,712 |  |  |  | 1,903 |  |  |  | 2,164 |
Selling, general and administrative |  |  | 5,966 |  |  |  | 6,686 |  |  |  | 6,219 |  |  |  | 6,794 |
Amortization of intangible assets |  |  | 50 |  |  |  | 51 |  |  |  | 50 |  |  |  | 51 |
Total operating expenses |  |  | 7,840 |  |  |  | 8,449 |  |  |  | 8,172 |  |  |  | 9,009 |
Loss from operations |  |  | (4,572 | ) |  |  | (4,799 | ) |  |  | (4,331 | ) |  |  | (3,598 | )
Total non-operating income (expense), net |  |  | (4,227 | ) |  |  | 2,933 |  |  |  | 926 |  |  |  | 1,993 |
Loss before income taxes |  |  | (8,799 | ) |  |  | (1,866 | ) |  |  | (3,405 | ) |  |  | (1,605 | )
Provision for income taxes |  |  | 35 |  |  |  | 41 |  |  |  | 55 |  |  |  | 111 |
Net loss |  | $ | (8,834 | ) |  | $ | (1,907 | ) |  | $ | (3,460 | ) |  | $ | (1,716 | )
Net loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.17 | ) |  | $ | (0.04 | ) |  | $ | (0.06 | ) |  | $ | (0.03 | )
Diluted |  | $ | (0.17 | ) |  | $ | (0.10 | ) |  | $ | (0.08 | ) |  | $ | (0.07 | )

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=25249566&loc=d3e1280-108306 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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