Share based compensation - Options Exercised (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Share based compensation | |||
| Option Exercised (in shares) | 14,614,410 | 5,823,534 | 5,723,646 |
| Intrinsic value of stock options exercised | $ 2,527,000 | $ 2,368,000 | $ 4,321,000 |
| Proceeds from exercise of stock options | 256,000 | 50,000 | 759,000 |
| Tax benefit from stock option exercises | $ 541,000 | $ 488,000 | $ 862,000 |
| X | ||||||||||
- Definition Amount of tax benefit from exercise of option under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|