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Note 14 - Capital Stock - Share-based and Other Compensation Programs (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 anniversary $ / shares shares | Jun. 30, 2021 anniversary $ / shares shares | Dec. 31, 2020 $ / shares shares
Performance Based RSUs Equity Settled |  |  |
Capital Stock [Line Items] |  |  |
Number of Shares, Unvested | shares | 2,361,832 | 2,361,832 | 2,186,244
Weighted Average Grant Date Fair Value, Unvested | $ / shares | $ 16.78 | $ 16.78 | $ 15.71
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares |  | 580,180 |
Weighted Average Grant Date Fair Value, Granted | $ / shares |  | $ 20.40 |
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares | shares |  | 421,357 |
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares, Weighted Average Grant Date Fair Value | $ / shares |  | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares |  | (811,578) |
Weighted Average Grant Date Fair Value, Vested | $ / shares |  | $ 15.98 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | shares |  | (14,371) |
Weighted Average Grant Date Fair Value, Forfeited | $ / shares |  | $ 16.80 |
Performance Based RSUs Equity Settled | 2021 Award Year |  |  |
Capital Stock [Line Items] |  |  |
Performance Period, Performance-based RSUs | 3 years |  |
Payout Percentage of Target Award | 200.00% |  |
Performance Based RSUs Equity Settled | Minimum |  |  |
Capital Stock [Line Items] |  |  |
Payout Percentage of Target Award |  | 0.00% |
Performance Based RSUs Equity Settled | Minimum | 2021 Award Year |  |  |
Capital Stock [Line Items] |  |  |
Cliff-Vesting Period | 1 year |  |
Timed-Vested RSUs Equity Settled |  |  |
Capital Stock [Line Items] |  |  |
Number of Shares, Unvested | shares | 2,127,570 | 2,127,570 | 2,118,885
Weighted Average Grant Date Fair Value, Unvested | $ / shares | $ 14.41 | $ 14.41 | $ 13.16
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares |  | 461,339 |
Weighted Average Grant Date Fair Value, Granted | $ / shares |  | $ 21.56 |
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares | shares |  | 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares, Weighted Average Grant Date Fair Value | $ / shares |  | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares |  | (438,825) |
Weighted Average Grant Date Fair Value, Vested | $ / shares |  | $ 15.82 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | shares |  | (13,829) |
Weighted Average Grant Date Fair Value, Forfeited | $ / shares |  | $ 16.13 |
Timed-Vested RSUs Equity Settled | 2021 Award Year |  |  |
Capital Stock [Line Items] |  |  |
Number of Anniversaries of the Grant Date | anniversary | 3 | 3 |
Timed-Vested RSUs Equity Settled | Minimum | 2021 Award Year |  |  |
Capital Stock [Line Items] |  |  |
Cliff-Vesting Period | 1 year |  |

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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- 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. + 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)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants 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 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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