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Equity (Tables) | 3 Months Ended
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Mar. 31, 2024
Equity |
Summary of changes in Shareholders' Equity | The changes in shareholders’ equity for the three months ended March 31, 2024 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ |  | Additional | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ |  | Accumulated Other | ​ | Total
​ | Common Stock |  | Paid- In | ​ | Treasury Stock | ​ | Accumulated |  | Comprehensive | ​ | Shareholders’
​ | Shares |  | ​ | Amount |  | Capital | ​ | Shares | ​ | ​ | Amount |  | Deficit |  | Income (Loss) | ​ | Equity
Balance, December 31, 2023 | 38,192,441 | ​ | $ | 38 | ​ | $ | 565,949 | ​ | (6,323,892) | ​ | $ | (137,381) | ​ | $ | (233,189) | ​ | $ | 14 | ​ | $ | 195,431
Exercise of common stock options | 200,200 | ​ | ​ | — | ​ | ​ | 4,205 | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 4,205
Issuance for employee stock purchase plan | 18,538 | ​ | ​ | — | ​ | ​ | 356 | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 356
Vesting of RSUs and PSUs | 1,000,357 | ​ | ​ | 1 | ​ | ​ | — | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1
Shares withheld for employee taxes upon vesting of RSUs and PSUs | (381,897) | ​ | ​ | — | ​ | ​ | (12,874) | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (12,874)
Stock-based compensation | — | ​ | ​ | — | ​ | ​ | 7,475 | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 7,475
Other comprehensive loss, net of tax | — | ​ | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (138) | ​ | ​ | (138)
Net income | — | ​ | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | — | ​ | ​ | 27,713 | ​ | ​ | — | ​ | ​ | 27,713
Balance, March 31, 2024 | 39,029,639 | ​ | $ | 39 | ​ | $ | 565,111 | ​ | (6,323,892) | ​ | $ | (137,381) | ​ | $ | (205,476) | ​ | $ | (124) | ​ | $ | 222,169
​ The changes in shareholders’ equity for the three months ended March 31, 2023 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ |  | Additional | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ |  | Total
​ | Common Stock |  | Paid- In | ​ | Treasury Stock | ​ | Accumulated |  | Shareholders’
​ | Shares |  | ​ | Amount |  | Capital | ​ | Shares | ​ | ​ | Amount |  | Deficit |  | Equity
Balance, December 31, 2022 | 37,084,759 | ​ | $ | 37 | ​ | $ | 538,073 | ​ | (3,235,823) | ​ | $ | (61,924) | ​ | $ | (281,344) | ​ | $ | 194,842
Exercise of common stock options | 234,132 | ​ | ​ | — | ​ | ​ | 3,848 | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,848
Issuance for employee stock purchase plan | 11,329 | ​ | ​ | — | ​ | ​ | 169 | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 169
Vesting of RSUs and PSUs | 775,904 | ​ | ​ | 1 | ​ | ​ | — | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1
Shares withheld for employee taxes upon vesting of RSUs and PSUs | (289,281) | ​ | ​ | — | ​ | ​ | (7,736) | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (7,736)
Stock-based compensation | — | ​ | ​ | — | ​ | ​ | 6,035 | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 6,035
Net loss | — | ​ | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | — | ​ | ​ | (17,426) | ​ | ​ | (17,426)
Balance, March 31, 2023 | 37,816,843 | ​ | $ | 38 | ​ | $ | 540,389 | ​ | (3,235,823) | ​ | $ | (61,924) | ​ | $ | (298,770) | ​ | $ | 179,733

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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 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-2 + Details
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