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Organization and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Organization and Summary of Significant Accounting Policies |
Summary of changes in our estimated warranty reserve | Changes in our estimated warranty reserve were as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31,
​ |  | 2022 | ​ | 2021 |  | 2020
Balance, beginning of period | ​ | $ | 2,822 | ​ | $ | 769 | ​ | $ | 1,476
Utilization of reserve | ​ |  | (2,209) | ​ |  | (873) | ​ |  | (700)
Warranty expense | ​ |  | 198 | ​ |  | 2,926 | ​ |  | (7)
Balance, end of period | ​ | $ | 811 | ​ | $ | 2,822 | ​ | $ | 769
​
Schedule of weighted average number of shares outstanding and earnings per share | The calculation of the weighted average number of shares outstanding and earnings per share are as follows (in thousands except per share data): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
​ |  | 2022 |  | 2021 |  | 2020
Numerator for basic and diluted earnings per share: |  | ​ |  |  | ​ |  |  | ​ |
Net income (loss) | ​ | $ | 147,139 | ​ | $ | (60,018) | ​ | $ | (1,724)
Denominator: | ​ |  |  | ​ |  |  | ​ |  |
Weighted average shares outstanding-basic | ​ |  | 71,093 | ​ |  | 66,191 | ​ |  | 61,782
Dilutive effect of stock-based awards | ​ |  | 1,441 | ​ |  | — | ​ |  | —
Diluted weighted average shares outstanding | ​ |  | 72,534 | ​ |  | 66,191 | ​ |  | 61,782
Net income (loss) per common share: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Basic | ​ | $ | 2.07 | ​ | $ | (0.91) | ​ | $ | (0.03)
Diluted | ​ | $ | 2.03 | ​ | $ | (0.91) | ​ | $ | (0.03)
​
Schedule of potentially dilutive securities excluded in calculation of diluted net income per share | Potentially dilutive securities that are not included in the calculation of diluted net income per share because doing so would be antidilutive are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
​ |  | 2022 |  | 2021 |  | 2020
Stock-based awards | ​ |  | 3,264 | ​ |  | 7,690 | ​ |  | 12,150
2027 Notes | ​ |  | 3,017 | ​ |  | — | ​ |  | —
2027 Warrants | ​ |  | 3,017 | ​ |  | — | ​ |  | —
Total potentially dilutive securities | ​ | ​ | 9,298 | ​ |  | 7,690 | ​ |  | 12,150
​

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126907703&loc=d3e12565-110249 + Details
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