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Consolidated Statements of Shareholders' Equity (Unaudited) - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands | Preferred Stock [Member] Series A Convertible [Member] | Preferred Stock [Member] Series B Convertible [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member] | Accumulated Other Comprehensive Income [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2017 | $ 16,060 | $ 25,406 | $ 68 | $ 5,340 | $ (31,355) | $ 0 | $ 15,519
Beginning Balance (in shares) at Dec. 31, 2017 | 128,738 | 126,909 | 6,795,627 |  |  |  |
Conversion of convertible preferred shares into common shares | $ (16,060) | $ (25,406) | $ 194 | 41,272 | 0 | 0 | 0
Conversion of convertible preferred shares into common shares (in shares) | (128,738) | (126,909) | 19,475,788 |  |  |  |
Exchange of common shares in connection with the Merger | $ 0 | $ 0 | $ 68 | 85,992 | 0 | 0 | 86,060
Exchange of common shares in connection with the Merger (in shares) | 0 | 0 | 6,805,608 |  |  |  |
Issuance of common shares, net of issuance costs of $5.3 million | $ 0 | $ 0 | $ 63 | 78,455 | 0 | 0 | 78,518
Issuance of common shares, net of issuance costs of $5.3 million (in shares) | 0 | 0 | 6,325,000 |  |  |  |
Issuance of common shares pursuant to settlement of restricted stock units | $ 0 | $ 0 | $ 1 | (1) | 0 | 0 | 0
Issuance of common shares pursuant to settlement of restricted stock units (in shares) | 0 | 0 | 1,875 |  |  |  |
Unrealized gain on short term investments | $ 0 | $ 0 | $ 0 | 0 | 0 | 10 | 10
Share-based compensation | 0 | 0 | 0 | 5,382 | 0 | 0 | 5,382
Net loss | 0 | 0 | 0 | 0 | (15,343) | 0 | (15,343)
Ending Balance at Mar. 31, 2018 | $ 0 | $ 0 | $ 394 | $ 216,440 | $ (46,698) | $ 10 | $ 170,146
Ending Balance (in shares) at Mar. 31, 2018 | 0 | 0 | 39,403,898 |  |  |  |

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