Stock incentive plans - Compensation expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Stock incentive plans | |||
| Total stock-based compensation expense | $ 7,606 | $ 8,596 | $ 12,268 |
| Stock-based compensation expense capitalized | 645 | 860 | 789 |
| Out of period adjustments | 481 | ||
| Tax expense from stock-based compensation | $ (659) | ||
| Tax benefit from stock based compensation | $ 5,915 | $ 4,594 | |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of cost capitalized for award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of tax expense for related to award under share-based payment arrangement No definition available.
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- Definition Amount of out-of-period expense adjustment for award under share-based payment arrangement. No definition available.
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