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Note 15 - Share-Based and Other Compensation Plans (RSUs - Cash Settled) (Details) | 12 Months Ended
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Dec. 31, 2015 shares | Dec. 31, 2014 shares | Dec. 31, 2013 shares | Dec. 31, 2012 shares
Timed-Vested RSUs [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period (in years) | 3 years |  |  |
2014 Award Year [Member] | Performance Based RSUs [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  | 702,180 |  |
2014 Award Year [Member] | Timed-Vested RSUs [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  | 170,176 |  |
2014 Award Year [Member] | Timed-Vested RSUs [Member] | Equity Settled [Member] | Key Employee [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  | 85,133 |  |
2014 Award Year [Member] | Timed-Vested RSUs [Member] | Equity Settled [Member] | Non-Employee Directors [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  | 85,043 |  |
2013 Award Year [Member] | Performance Based RSUs [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  |  | 435,970 |
2013 Award Year [Member] | Timed-Vested RSUs [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  |  | 102,618 |
2013 Award Year [Member] | Timed-Vested RSUs [Member] | Equity Settled [Member] | Key Employee [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  |  | 13,260 |
2013 Award Year [Member] | Timed-Vested RSUs [Member] | Equity Settled [Member] | Non-Employee Directors [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  |  | 89,358 |
Equity Compensation Plan, 2008 [Member] | Timed-Vested RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period (in years) | 3 years | 3 years | 3 years |
Equity Compensation Plan, 2008 [Member] | 2014 Award Year [Member] | Performance Based RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee | 0 |  |  |
Equity Compensation Plan, 2008 [Member] | 2013 Award Year [Member] | Performance Based RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  | 0 | 0 |
Equity Compensation Plan, 2008 [Member] | 2013 Award Year [Member] | Performance Based RSUs [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period (in years) |  | 3 years |  |
Maximum Payout Percentage of Target Award |  | 200.00% |  |
Share Based Compensation, Maximum Multiplier for Target Payout |  | 6 |  |
Equity Compensation Plan, 2008 [Member] | 2013 Award Year [Member] | Performance Based RSUs [Member] | Maximum [Member] | Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Payout Percentage of Target Award When Absolute TSR is Negative |  | 50.00% |  |
Equity Compensation Plan, 2008 [Member] | 2013 Award Year [Member] | Timed-Vested RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee | 0 | 1,470 |  |
Equity Compensation Plan, 2008 [Member] | 2012 Award Year [Member] | Performance Based RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  |  |  | 2,211,640
Award Requisite Service Period | 3 years |  |  |
Equity Compensation Plan, 2008 [Member] | 2012 Award Year [Member] | Timed-Vested RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Grants by Compensation Committee |  |  | 7,670 |
Equity Compensation Plan, 2008 [Member] | 2011 Award Year [Member] | Performance Based RSUs [Member] | Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period (in years) | 3 years |  |  |
Maximum Payout Percentage of Target Award | 200.00% |  |  |

X
- Definition The maximum multiplier that can be used against a grantee's total award to calculate the target value of a share-based compensation award. This calculated value (the multiplier times the grantee's total award value on the grant date) represents the maximum payout in dollars allowed under the plan. + References No definition available. + Details
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- Definition The maximum payout percentage at the end of the performance period based on the target award. + References No definition available. + Details
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- Definition Share-based Compensation Payout Percentage of Target Award When Absolute TSR (Total Stockholder Return measured relative to the peer group company's TSR) is Negative. + References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -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 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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