Note 11 - Share-based Awards and Cash-based Awards - Schedule of Outstanding Restricted Shares Issued to Non-employee Directors (Details) - Restricted Stock [Member] - shares |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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Awards expected to vest by period (in shares) | 123,180 | 181,832 | 246,528 | 161,296 |
Vesting in 2020 [Member] | ||||
Awards expected to vest by period (in shares) | 78,428 | |||
Vesting in 2021 [Member] | ||||
Awards expected to vest by period (in shares) | 29,304 | |||
Vesting in 2022 [Member] | ||||
Awards expected to vest by period (in shares) | 15,448 |
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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