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Equity (Tables) | 6 Months Ended
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Jun. 30, 2024
Equity |
Schedule of Stockholders' Equity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Accumulated |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Additional | ​ | ​ | ​ | ​ | Other | ​ | ​ | ​
​ | ​ | Common Stock | ​ | Paid-in | ​ | Accumulated | ​ | Comprehensive | ​ | ​ | ​
​ | ​ | Shares | ​ | Amount | ​ | Capital | ​ | Deficit | ​ | Income | ​ | Total
​ | ​ | (in thousands)
Balance at December 31, 2023 |  | 56,364 | ​ | $ | 564 | ​ | $ | 1,202,440 | ​ | $ | (532,169) | ​ | $ | 1,607 | ​ | $ | 672,442
Net income |  | — | ​ |  | — | ​ |  | — | ​ |  | 21,854 | ​ |  | — | ​ |  | 21,854
Other comprehensive income (loss), net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (128) | ​ |  | (128)
Share-based compensation expense |  | — | ​ |  | — | ​ |  | 8,082 | ​ |  | — | ​ |  | — | ​ |  | 8,082
Net issuance under employee stock plans | ​ | 273 | ​ | ​ | 2 | ​ | ​ | (14,342) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (14,340)
Balance at March 31, 2024 |  | 56,637 | ​ | $ | 566 | ​ | $ | 1,196,180 | ​ | $ | (510,315) | ​ | $ | 1,479 | ​ | $ | 687,910
Net income |  | — | ​ |  | — | ​ |  | — | ​ |  | 14,944 | ​ |  | — | ​ |  | 14,944
Other comprehensive income (loss), net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (12) | ​ |  | (12)
Share-based compensation expense |  | — | ​ |  | — | ​ |  | 9,233 | ​ |  | — | ​ |  | — | ​ |  | 9,233
Net issuance under employee stock plans |  | 136 | ​ | ​ | 3 | ​ | ​ | 2,935 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,938
Balance at June 30, 2024 |  | 56,773 | ​ | $ | 569 | ​ | $ | 1,208,348 | ​ | $ | (495,371) | ​ | $ | 1,467 | ​ | $ | 715,013
​ ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Accumulated |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Additional | ​ | ​ | ​ | ​ | Other | ​ | ​ | ​
​ | ​ | Common Stock | ​ | Paid-in | ​ | Accumulated | ​ | Comprehensive | ​ | ​ | ​
​ | ​ | Shares | ​ | Amount | ​ | Capital | ​ | Deficit | ​ | Income | ​ | Total
​ | ​ | (in thousands)
Balance at December 31, 2022 |  | 51,660 | ​ | $ | 517 | ​ | $ | 1,078,180 | ​ | $ | (501,801) | ​ | $ | 928 | ​ | $ | 577,824
Net income |  | — | ​ |  | — | ​ |  | — | ​ |  | 8,741 | ​ |  | — | ​ |  | 8,741
Other comprehensive income (loss), net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 476 | ​ |  | 476
Share-based compensation expense |  | — | ​ |  | — | ​ |  | 7,027 | ​ |  | — | ​ |  | — | ​ |  | 7,027
Net issuance under employee stock plans | ​ | 33 | ​ | ​ | — | ​ | ​ | (8,509) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (8,509)
Balance at March 31, 2023 |  | 51,693 | ​ | $ | 517 | ​ | $ | 1,076,698 | ​ | $ | (493,060) | ​ | $ | 1,404 | ​ | $ | 585,559
Net income |  | — | ​ |  | — | ​ |  | — | ​ |  | (85,320) | ​ |  | — | ​ |  | (85,320)
Other comprehensive income (loss), net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (39) | ​ |  | (39)
Share-based compensation expense |  | — | ​ |  | — | ​ |  | 7,932 | ​ |  | — | ​ |  | — | ​ |  | 7,932
Partial Extinguishment of 2025 and 2027 Notes | ​ | 4,460 | ​ | ​ | 45 | ​ | ​ | 102,095 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 102,140
Net issuance under employee stock plans | ​ | 185 | ​ | ​ | 2 | ​ | ​ | 2,326 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,328
Balance at June 30, 2023 |  | 56,338 | ​ | $ | 564 | ​ | $ | 1,189,051 | ​ | $ | (578,380) | ​ | $ | 1,365 | ​ | $ | 612,600
Schedule of the changes in the balances of each component of AOCI, net of tax | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ | ​ | ​ | ​ | Gains (Losses) | ​ | ​ | ​
​ | ​ | Foreign | ​ | on Available | ​ | ​ | ​
​ | ​ | Currency | ​ | for Sale | ​ | ​ | ​
​ |  | Translation |  | Securities |  | Total
​ | ​ | (in thousands)
Balance - December 31, 2023 | ​ | $ | 1,761 | ​ | $ | (154) | ​ | $ | 1,607
Other comprehensive income (loss) | ​ |  | (35) | ​ |  | (105) | ​ |  | (140)
Balance - June 30, 2024 | ​ | $ | 1,726 | ​ | $ | (259) | ​ | $ | 1,467

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