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Note 14 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021 | Aug. 31, 2021 | Feb. 28, 2020
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.01 | $ 0.01 |  |
ATM Program [Member] |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  | $ 0.01 |
Sales of Stock Maximum Sales Price |  |  | $ 500.0 |
Stock Issued During Period, Shares, New Issues (in shares) | 0 |  |  |
Common Stock Available for Issuance, Value | $ 422.4 |  |  |
Share Repurchase Program [Member] |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  | $ 0.01
Stock Repurchase Program, Authorized Amount |  |  |  | $ 300.0
Stock Repurchased During Period, Shares (in shares) | 0 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 224.9 |  |  |

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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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