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Stockholders' Equity (Tables) | 3 Months Ended
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Mar. 31, 2023
Stockholders' Equity |
Schedule of shareholder's equity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ |  | Accumulated |  | ​ | ​ |  | ​ | ​
​ | ​ | Common | ​ | Common | ​ | Additional | ​ | Other | ​ | ​ | ​ | ​ | Total
​ | ​ | Stock | ​ | Stock Par | ​ | Paid-In | ​ | Comprehensive | ​ | Accumulated | ​ | Stockholders’
​ |  | Shares |  | Value |  | Capital |  | Income |  | Deficit |  | Equity
​ | ​ | (In thousands, except share amounts)
Consolidated balance at December 31, 2022 |  | 47,200,695 |  | $ | 47 |  | $ | 1,580,829 |  | $ | 1,260 |  | $ | (1,255,932) |  | $ | 326,204
Shares issued under stock option and employee stock purchase plans |  | 43,986 |  |  | — |  |  | 694 |  |  | — |  |  | — |  |  | 694
Stock-based compensation |  | — |  |  | — |  |  | 4,340 |  |  | — |  |  | — |  |  | 4,340
Unrealized gain on marketable securities |  | — |  |  | — |  |  | — |  |  | 863 |  |  | — |  |  | 863
Net loss |  | — |  |  | — |  |  | — |  |  | — |  |  | (29,361) | ​ |  | (29,361)
Consolidated balance at March 31, 2023 |  | 47,244,681 |  | $ | 47 |  | $ | 1,585,863 |  | $ | 2,123 |  | $ | (1,285,293) |  | $ | 302,740
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ |  | Accumulated |  | ​ | ​ |  | ​ | ​
​ | ​ | Common | ​ | Common | ​ | Additional | ​ | Other | ​ | ​ | ​ | ​ | Total
​ | ​ | Stock | ​ | Stock Par | ​ | Paid-In | ​ | Comprehensive | ​ | Accumulated | ​ | Stockholders’
​ | ​ | Shares | ​ | Value | ​ | Capital | ​ | Income | ​ | Deficit | ​ | Equity
​ | ​ | (In thousands, except share amounts)
Consolidated balance at December 31, 2021 |  | 46,730,198 | ​ | $ | 47 | ​ | $ | 1,561,142 | ​ | $ | 1,894 | ​ | $ | (1,143,607) | ​ | $ | 419,476
Shares issued under stock option and employee stock purchase plans |  | 24,150 | ​ |  | — | ​ |  | 304 | ​ |  | — | ​ |  | — | ​ |  | 304
Stock-based compensation |  | — | ​ |  | — | ​ |  | 3,153 | ​ |  | — | ​ |  | — | ​ |  | 3,153
Unrealized loss on marketable securities |  | — | ​ |  | — | ​ |  | — | ​ |  | (1,782) | ​ |  | — | ​ |  | (1,782)
Net loss |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (23,050) | ​ |  | (23,050)
Consolidated balance at March 31, 2022 |  | 46,754,348 | ​ | $ | 47 | ​ | $ | 1,564,599 | ​ | $ | 112 | ​ | $ | (1,166,657) | ​ | $ | 398,101

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 + Details
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- References No definition available. + Details
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