v3.21.1

Stock incentive plans - Stock option awards (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |  | 3 Months Ended
--- | --- | ---
Dec. 31, 2020 | Mar. 31, 2021
Number of Options |  |
Outstanding at beginning of period (in shares) |  | 109
Exercised (in shares) |  | (13)
Outstanding and exercisable at end of period (in shares) | 109 | 96
Weighted Average Exercise Price |  |
Outstanding at beginning of period (in dollars per share) |  | $ 7.75
Exercised (in dollars per share) |  | 9.64
Outstanding and exercisable at end of period (in dollars per share) | $ 7.75 | $ 7.48
Weighted-Average Remaining Contract Life (years) |  |
Outstanding and exercisable at end of period | 1 year 9 months 18 days | 1 year 8 months 12 days
Aggregate Intrinsic Value |  |
Outstanding and exercisable at end of period | $ 559 | $ 630

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