XML 40 R29.htm IDEA: XBRL DOCUMENT
v3.23.2

Net Income Per Share (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Net Income Per Share |
Schedule of basic and diluted income per share | ​ Basic and diluted net income per share were computed as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, |  | Six Months Ended June 30,
​ | ​ | 2023 | ​ | 2022 |  | 2023 | ​ | 2022
Net income (in thousands) | ​ | $ | 164,400 | ​ | $ | 143,697 | ​ | $ | 300,270 | ​ | $ | 258,410
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average number of common shares outstanding - basic | ​ | ​ | 31,599,744 | ​ | ​ | 32,405,292 | ​ | ​ | 31,575,337 | ​ | ​ | 32,570,988
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Dilutive effect of common stock equivalents: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
RSAs with service-based conditions | ​ | ​ | 25,052 | ​ | ​ | 12,123 | ​ | ​ | 23,848 | ​ | ​ | 13,625
RSAs with market-based conditions | ​ | ​ | 20,039 | ​ | ​ | 52,871 | ​ | ​ | 22,450 | ​ | ​ | 76,515
RSAs with performance-based conditions | ​ | ​ | 1,974 | ​ | ​ | 39,677 | ​ | ​ | 15,503 | ​ | ​ | 51,851
Stock options | ​ | ​ | 84,998 | ​ | ​ | 104,486 | ​ | ​ | 85,522 | ​ | ​ | 114,570
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average number of common shares outstanding - diluted | ​ | ​ | 31,731,807 | ​ | ​ | 32,614,449 | ​ | ​ | 31,722,660 | ​ | ​ | 32,827,549
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income per common share | ​ | $ | 5.20 | ​ | $ | 4.43 | ​ | $ | 9.51 | ​ | $ | 7.93
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income per common share | ​ | $ | 5.18 | ​ | $ | 4.41 | ​ | $ | 9.47 | ​ | $ | 7.87
Summary of shares excluded from the calculation of diluted income per share because their effect would have been anti-dilutive | The following table summarizes shares excluded from the calculation of diluted net income per share because their effect would have been anti-dilutive: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, |  | Six Months Ended June 30,
​ | ​ | 2023 |  | 2022 |  | 2023 |  | 2022
Anti-dilutive common stock equivalents: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
RSAs with service-based conditions | ​ | ​ | - | ​ | ​ | 18,880 | ​ | ​ | 5,582 | ​ | ​ | 14,562
RSAs with market-based conditions | ​ | ​ | - | ​ | ​ | 82 | ​ | ​ | 4,467 | ​ | ​ | 232
RSAs with performance-based conditions | ​ | ​ | - | ​ | ​ | - | ​ | ​ | - | ​ | ​ | 3,954
Stock options | ​ | ​ | 14,801 | ​ | ​ | 22,875 | ​ | ​ | 18,541 | ​ | ​ | 19,731
Total anti-dilutive common stock equivalents | ​ | ​ | 14,801 | ​ | ​ | 41,837 | ​ | ​ | 28,590 | ​ | ​ | 38,479

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration