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Note 14 - Capital Stock Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | May 06, 2019 | Mar. 20, 2019 | Aug. 16, 2018
Third Quarter 2018 Repurchase Program |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 100.0
First Quarter 2019 Repurchase Program |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 150.0 |
Total of All Repurchase Programs |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 250.0 |
Stock Repurchased During Period, Shares |  | 1,546,674 |  |  |
Accelerated Share Repurchases, Final Price Paid Per Share |  | $ 20.54 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  | $ 218.2 |  |  |
Subsequent Event | Total of All Repurchase Programs |  |  |  |  |
Capital Stock [Line Items] |  |  |  |  |
Stock Repurchased During Period, Shares | 4,131,329 |  |  |  |
Accelerated Share Repurchases, Final Price Paid Per Share | $ 21.94 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  | $ 127.7 |  |

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- Definition Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + 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 http://asc.fasb.org/extlink&oid=109259400&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 http://asc.fasb.org/extlink&oid=6877327&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 http://asc.fasb.org/extlink&oid=27012166&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 http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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