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Note 7 - Share-Based Compensation - Stock Incentive Plan Activities (Details) - $ / shares shares in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Awards Available (in shares) | 16 | 2,362 | 1,082
Options Outstanding (in shares) | 10,671 | 9,605 | 8,986
Weighted Average Exercise Price (in dollars per share) |  |  | $ 4.99
Plan amendment (in shares) | 3,800 |  | 3,750
Restricted stock awards granted (in shares) | (34) | (163) | (593)
Restricted stock awards cancelled (in shares) | 22 | 1 |
Stock option awards granted (in shares) | (2,248) | (2,217) | (1,965)
Stock option awards granted (in shares) | 2,248 | 2,217 | 1,965
Stock option awards granted (in dollars per share) | $ 3.20 | $ 11.52 | $ 10.99
Stock option awards exercised (in shares) | (107) | (1,118) | (1,258)
Stock option awards exercised (in dollars per share) | $ 2.63 | $ 4.36 | $ 4.78
Stock option awards cancelled (in shares) | 717 | 33 | 88
Stock option awards cancelled (in shares) | (717) | (33) | (88)
Stock option awards cancelled (in dollars per share) | $ 10.78 | $ 9.87 | $ 8.83
Awards Available (in shares) | 2,273 | 16 | 2,362
Options Outstanding (in shares) | 12,095 | 10,671 | 9,605
Weighted Average Exercise Price (in dollars per share) | $ 6.55 | $ 7.50 | $ 6.21

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- Definition Share based compensation arrangement by share based payment award options forfeitures in period awards available. + 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://www.xbrl.org/2003/role/presentationRef -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=6415400&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://www.xbrl.org/2003/role/presentationRef -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=6415400&loc=d3e5070-113901 + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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