Note 8 - Share-based Compensation and Cash-based Incentive Compensation - Summary of Share Activity Related to Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member] |
3 Months Ended |
|---|---|
|
Mar. 31, 2020
$ / shares
shares
| |
| Nonvested, units (in shares) | shares | 1,614,722 |
| Nonvested, weighted average grant date fair value per unit (in dollars per share) | $ / shares | $ 5.73 |
| Forfeited, units (in shares) | shares | (22,645) |
| Forfeited, weighted average grant date fair value per unit (in dollars per share) | $ / shares | $ 6.37 |
| Nonvested, units (in shares) | shares | 1,592,077 |
| Nonvested, weighted average grant date fair value per unit (in dollars per share) | $ / shares | $ 5.72 |
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|