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CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS EQUITY (DEFICIT) (unaudited) - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit | Redeemable Convertible Preferred Stock
--- | --- | --- | --- | --- | --- | ---
Redeemable convertible preferred stock, beginning balance at Dec. 31, 2018 | $ 89,404 |  |  |  |  | $ 89,404
Redeemable convertible preferred stock, beginning balance, shares at Dec. 31, 2018 | 18,474,742 |  |  |  |  | 18,474,742
Beginning balance at Dec. 31, 2018 | $ (106,388) | $ 1 | $ 9,131 | $ (15) | $ (115,505) |
Beginning balance, shares at Dec. 31, 2018 |  | 3,085,307 |  |  |  |
Issuance of common stock warrants | 572 |  | 572 |  |  |
Elimination of fractional shares upon reverse stock split (see Note 8) |  | $ (1) | 1 |  |  |
Redeemable convertible preferred stock, Elimination of fractional shares upon reverse stock split (see Note8) |  |  |  |  |  | (39)
Elimination of fractional shares upon reverse stock split (see Note 8), shares |  | (34) |  |  |  |
Exercise of common stock warrants | 8 |  | 8 |  |  |
Exercise of common stock warrants, shares |  | 207,712 |  |  |  |
Conversion of Series A, B and C redeemable convertible preferred stock to common stock | 89,404 | $ 2 | 89,402 |  |  |
Redeemable convertible preferred stock, Conversion of Series A, B and C redeemable convertible preferred stock to common stock, shares |  |  |  |  |  | (18,474,703)
Redeemable convertible preferred stock, Conversion of Series A, B and C redeemable convertible preferred stock to common stock |  |  |  |  |  | $ (89,404)
Conversion of Series A, B and C redeemable convertible preferred stock to common stock, shares |  | 18,474,703 |  |  |  |
Conversion of redeemable convertible preferred stock warrants to common stock warrants | 2,086 |  | 2,086 |  |  |
Proceeds from initial public offering, net of expenses | 140,024 | $ 1 | 140,023 |  |  |
Proceeds from initial public offering, net of expenses, shares |  | 9,109,725 |  |  |  |
Proceeds from exercise of stock options | 611 |  | 611 |  |  |
Proceeds from exercise of stock options, shares |  | 244,192 |  |  |  |
Stock-based compensation | 2,255 |  | 2,255 |  |  |
Net loss | (11,554) |  |  |  | (11,554) |
Ending balance at Jun. 30, 2019 | 117,018 | $ 3 | 244,089 | (15) | (127,059) |
Ending balance, shares at Jun. 30, 2019 |  | 31,121,605 |  |  |  |
Redeemable convertible preferred stock, beginning balance at Mar. 31, 2019 |  |  |  |  |  | $ 89,404
Redeemable convertible preferred stock, beginning balance, shares at Mar. 31, 2019 |  |  |  |  |  | 18,474,742
Beginning balance at Mar. 31, 2019 | (110,523) | $ 1 | 10,666 |  | (121,190) |
Beginning balance, shares at Mar. 31, 2019 |  | 3,166,316 |  |  |  |
Elimination of fractional shares upon reverse stock split (see Note 8) |  | $ (1) | 1 |  |  |
Redeemable convertible preferred stock, Elimination of fractional shares upon reverse stock split (see Note8) |  |  |  |  |  | (39)
Elimination of fractional shares upon reverse stock split (see Note 8), shares |  | (34) |  |  |  |
Exercise of common stock warrants | 8 |  | 8 |  |  |
Exercise of common stock warrants, shares |  | 207,712 |  |  |  |
Conversion of Series A, B and C redeemable convertible preferred stock to common stock | 89,404 | $ 2 | 89,402 |  |  |
Redeemable convertible preferred stock, Conversion of Series A, B and C redeemable convertible preferred stock to common stock, shares |  |  |  |  |  | (18,474,703)
Redeemable convertible preferred stock, Conversion of Series A, B and C redeemable convertible preferred stock to common stock |  |  |  |  |  | $ (89,404)
Conversion of Series A, B and C redeemable convertible preferred stock to common stock, shares |  | 18,474,703 |  |  |  |
Conversion of redeemable convertible preferred stock warrants to common stock warrants | 2,086 |  | 2,086 |  |  |
Proceeds from initial public offering, net of expenses | 140,024 | $ 1 | 140,023 |  |  |
Proceeds from initial public offering, net of expenses, shares |  | 9,109,725 |  |  |  |
Proceeds from exercise of stock options | 257 |  | 257 |  |  |
Proceeds from exercise of stock options, shares |  | 163,183 |  |  |  |
Stock-based compensation | 1,646 |  | 1,646 |  |  |
Foreign currency translation adjustment | (15) |  |  | (15) |  |
Net loss | (5,869) |  |  |  | (5,869) |
Ending balance at Jun. 30, 2019 | 117,018 | $ 3 | 244,089 | (15) | (127,059) |
Ending balance, shares at Jun. 30, 2019 |  | 31,121,605 |  |  |  |
Beginning balance at Dec. 31, 2019 | 106,690 | $ 3 | 247,282 | (6) | (140,589) |
Beginning balance, shares at Dec. 31, 2019 |  | 31,243,029 |  |  |  |
Proceeds from exercise of stock options | 1,013 |  | 1,013 |  |  |
Proceeds from exercise of stock options, shares |  | 513,993 |  |  |  |
Proceeds from Employee Stock Purchase Plan purchases | 631 |  | 631 |  |  |
Proceeds from Employee Stock Purchase Plan purchases, shares |  | 71,480 |  |  |  |
Restricted stock units released, shares |  | 43,620 |  |  |  |
Stock-based compensation | 3,071 |  | 3,071 |  |  |
Foreign currency translation adjustment | (9) |  |  | (9) |  |
Unrealized gain on available-for-sale debt securities | 121 |  |  | 121 |  |
Net loss | (18,394) |  |  |  | (18,394) |
Ending balance at Jun. 30, 2020 | 93,123 | $ 3 | 251,997 | 106 | (158,983) |
Ending balance, shares at Jun. 30, 2020 |  | 31,872,122 |  |  |  |
Beginning balance at Mar. 31, 2020 | 99,202 | $ 3 | 248,854 | 73 | (149,728) |
Beginning balance, shares at Mar. 31, 2020 |  | 31,530,443 |  |  |  |
Proceeds from exercise of stock options | 690 |  | 690 |  |  |
Proceeds from exercise of stock options, shares |  | 236,578 |  |  |  |
Proceeds from Employee Stock Purchase Plan purchases | 631 |  | 631 |  |  |
Proceeds from Employee Stock Purchase Plan purchases, shares |  | 71,480 |  |  |  |
Restricted stock units released, shares |  | 33,621 |  |  |  |
Stock-based compensation | 1,822 |  | 1,822 |  |  |
Foreign currency translation adjustment | (4) |  |  | (4) |  |
Unrealized gain on available-for-sale debt securities | 37 |  |  | 37 |  |
Net loss | (9,255) |  |  |  | (9,255) |
Ending balance at Jun. 30, 2020 | $ 93,123 | $ 3 | $ 251,997 | $ 106 | $ (158,983) |
Ending balance, shares at Jun. 30, 2020 |  | 31,872,122 |  |  |  |

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References No definition available. + Details
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