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Note 10 - Share-based Compensation - Restricted Stock Activity (Details) - $ / shares |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
May 03, 2021 | Feb. 08, 2021 | Mar. 25, 2020 | Apr. 01, 2019 | Feb. 25, 2019 | Dec. 31, 2021 | Dec. 31, 2020
Restricted Stock [Member] |  |  |  |  |  |  |
Outstanding (in shares) |  |  |  |  |  | 930,854 | 429,399
Outstanding at beginning of year, grant date fair value (in dollars per share) |  |  |  |  |  | $ 19.31 | $ 13.25
Granted (in shares) |  |  |  |  |  | 801,484 | 717,267
Granted, grant date fair value (in dollars per share) |  |  |  |  |  | $ 47.20 | $ 20.88
Granted in lieu of cash (in shares) |  |  |  |  |  | 0 | 34,154
Granted in lieu of cash, grant fair value (in dollars per share) |  |  |  |  |  | $ 0 | $ 9.18
Vested (in shares) |  |  |  |  |  | (378,502) | (208,858)
Vested, grant date fair value (in dollars per share) |  |  |  |  |  | $ 19.31 | $ 11.32
Forfeited (in shares) |  |  |  |  |  | (141,053) | (41,108)
Forfeited, grant date fair value (in dollars per share) |  |  |  |  |  | $ 36.95 | $ 15.47
Outstanding (in shares) |  |  |  |  |  | 1,212,783 | 930,854
Outstanding at end of year, grant date fair value (in dollars per share) |  |  |  |  |  | $ 37.48 | $ 19.31
Performance-based Restricted Stock [Member] |  |  |  |  |  |  |
Outstanding (in shares) |  |  |  |  |  | 0 | 0
Outstanding at beginning of year, grant date fair value (in dollars per share) |  |  |  |  |  | $ 0 | $ 0
Granted, grant date fair value (in dollars per share) |  |  | $ 9.18 |  |  | $ 0 | $ 9.18
Vested (in shares) |  |  |  |  |  | 0 | (82,805)
Vested, grant date fair value (in dollars per share) |  |  |  |  |  | $ 0 | $ 9.18
Outstanding (in shares) |  |  |  |  |  | 0 | 0
Outstanding at end of year, grant date fair value (in dollars per share) |  |  |  |  |  | $ 0 | $ 0
Granted (in shares) |  |  | 82,805 |  |  | 0 | 82,805
Market-based Restricted Stock [Member] |  |  |  |  |  |  |
Outstanding (in shares) |  |  |  |  |  | 224,774 | 123,851
Outstanding at beginning of year, grant date fair value (in dollars per share) |  |  |  |  |  | $ 19.20 | $ 26.99
Granted, grant date fair value (in dollars per share) |  |  |  |  |  | $ 32.50 | $ 10.95
Vested (in shares) |  | (231,268) |  |  |  | (231,268) | 0
Vested, grant date fair value (in dollars per share) |  |  |  |  |  | $ 26.98 | $ 0
Forfeited (in shares) |  |  |  |  |  | (6,415) | (8,217)
Forfeited, grant date fair value (in dollars per share) |  |  |  |  |  | $ 40.65 | $ 27.02
Outstanding (in shares) |  |  |  |  |  | 139,756 | 224,774
Outstanding at end of year, grant date fair value (in dollars per share) |  |  |  |  |  | $ 19.86 | $ 19.20
Granted (in shares) | 6,415 | 115,634 | 109,140 | 29,604 | 94,247 | 152,665 | 109,140

X
- Definition The number of grants in lieu of cash made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period in lieu of cash on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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