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Unaudited Selected Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2017
Unaudited Selected Quarterly Financial Data [Abstract] |
Schedule Of Unaudited Quarterly Financial Data |
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﻿ | Fiscal 2017 Quarter Ended
﻿(in thousands, except per share data) | March 31, |  | June 30, |  | September 30, |  | December 31, |
﻿Total revenue | $ | 24,915 |  | $ | 20,073 |  | $ | 23,545 |  | $ | 24,935 |
﻿Total gross profit |  | 8,937 |  |  | 8,001 |  |  | 8,227 |  |  | 9,494 |
﻿Total operating expenses |  | 32,236 |  |  | 32,388 |  |  | 29,796 |  |  | 30,023 |
﻿Loss from operations |  | (23,299) |  |  | (24,387) |  |  | (21,569) |  |  | (20,529) |
﻿Net loss |  | (23,867) |  |  | (25,539) |  |  | (22,021) |  |  | (20,762) |
﻿Basic and diluted net loss per share | $ | (0.26) |  | $ | (0.26) |  | $ | (0.19) |  | $ | (0.18) |
﻿Weighted average shares used in computing net loss per share (1) |  | 92,970 |  |  | 97,360 |  |  | 115,771 |  |  | 116,259 |
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﻿ | Fiscal 2016 Quarter Ended
﻿(in thousands, except per share data) | March 31, |  | June 30, |  | September 30, |  | December 31, |
﻿Total revenue | $ | 19,127 |  | $ | 20,747 |  | $ | 25,118 |  | $ | 25,722 |
﻿Total gross profit |  | 9,504 |  |  | 10,644 |  |  | 12,638 |  |  | 11,374 |
﻿Total operating expenses |  | 28,069 |  |  | 28,714 |  |  | 29,373 |  |  | 29,248 |
﻿Loss from operations |  | (18,565) |  |  | (18,070) |  |  | (16,735) |  |  | (17,874) |
﻿Net loss |  | (19,352) |  |  | (18,499) |  |  | (17,494) |  |  | (19,030) |
﻿Basic and diluted net loss per share | $ | (0.23) |  | $ | (0.21) |  | $ | (0.19) |  | $ | (0.21) |
﻿Weighted average shares used in computing net loss per share (1) |  | 83,604 |  |  | 88,148 |  |  | 92,110 |  |  | 92,660 |
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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: 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=84173487&loc=d3e1280-108306 + Details
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