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Quarterly Financial Information (Unaudited) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information (Unaudited) | Note 18. Quarterly Financial Information (Unaudited) The following tables summarize the Company’s quarterly financial information for the years ended December 31, 2016 and 2015 (in thousands except per share amounts):
|  | Three Months Ended |
|  | March 31, 2016 |  |  | June 30, 2016 |  |  | September 30, 2016 |  |  | December 31, 2016 |
Product revenue |  | $ | 7,632 |  |  | $ | 9,251 |  |  | $ | 10,175 |  |  | $ | 10,125 |
Gross profit on product revenue |  |  | 3,369 |  |  |  | 4,275 |  |  |  | 4,724 |  |  |  | 4,520 |
Government contracts revenue |  |  | — |  |  |  | — |  |  |  | 261 |  |  |  | 1,831 |
Net loss |  |  | (16,863 | ) |  |  | (18,166 | ) |  |  | (14,376 | ) |  |  | (13,501 | )
Net loss per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | (0.17 | ) |  |  | (0.18 | ) |  |  | (0.14 | ) |  |  | (0.13 | )
Diluted |  |  | (0.17 | ) |  |  | (0.18 | ) |  |  | (0.14 | ) |  |  | (0.13 | )
|  | Three Months Ended |
|  | March 31, 2015 |  |  | June 30, 2015 |  |  | September 30, 2015 |  |  | December 31, 2015 |
Product revenue |  | $ | 7,692 |  |  | $ | 8,830 |  |  | $ | 8,045 |  |  | $ | 9,656 |
Gross profit on product revenue |  |  | 2,978 |  |  |  | 1,802 |  |  |  | 2,485 |  |  |  | 3,494 |
Government contracts revenue |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net loss |  |  | (9,460 | ) |  |  | (15,972 | ) |  |  | (15,680 | ) |  |  | (14,756 | )
Net loss per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | (0.10 | ) |  |  | (0.17 | ) |  |  | (0.16 | ) |  |  | (0.15 | )
Diluted |  |  | (0.17 | ) |  |  | (0.17 | ) |  |  | (0.17 | ) |  |  | (0.15 | )

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: 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=68064558&loc=d3e765-108305 Reference 3: 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=68064558&loc=d3e725-108305 + Details
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