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Note 15 - Share-Based and Other Compensation Plans (Awards Summary - Tables) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | $ 23,028 | $ 43,011 | $ 94,981
Less: Costs deferred as acquisition costs |  | 500 | 1,047 | 1,769
Stock-based compensation expense impact on net loss before income taxes - increase |  | $ 22,528 | $ 41,964 | 93,212
Stock Options [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Options, Equity Instruments Outstanding |  | 2,692,457 | 3,029,348 |
Cash Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Liability Recorded |  | $ 3,595 | $ 65,752 | 112,309
Share-based Compensation Programs, Compensation Cost Recognized | [1] | 10,403 | 32,749 | 87,866
Cash Settled [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Liability Recorded |  | 3,595 | 65,157 | 104,114
Share-based Compensation Programs, Compensation Cost Recognized | [1] | 10,244 | 31,834 | 79,322
Cash Settled [Member] | Stock Appreciation Rights (SARs) [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Liability Recorded |  | 0 | 595 | 8,195
Share-based Compensation Programs, Compensation Cost Recognized | [1] | 159 | 915 | 8,544
Equity Settled [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | 12,625 | 10,262 | 7,115
Equity Settled [Member] | Employee Stock Purchase Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | 396 | 267 | 267
Equity Settled [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | $ 9,243 | $ 7,461 | $ 4,336
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number |  | 2,472,861 | 2,056,596 | 1,273,556
Equity Settled [Member] | Stock Options [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | $ 2,984 | $ 2,531 | $ 2,488
Share-based Compensation Programs, Options, Equity Instruments Outstanding |  | 2,692,457 | 3,029,348 | 3,989,641
Equity Settled [Member] | Phantom Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | $ 2 | $ 3 | $ 3
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number |  | 230,196 | 284,645 | 284,645
Equity Settled [Member] | Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Compensation Programs, Compensation Cost Recognized | [1] | $ 0 | $ 0 | $ 21
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number |  | 0 | 0 | 0
[1] | For purposes of calculating compensation cost recognized, we generally consider time-vested awards effectively vested (and we recognize the full compensation costs) when grantees become retirement eligible. However, under the terms of our stock option awards granted in 2015, 2014, and 2013, legal vesting for retirement occurs when the grantee actually separates from service, with the exception of certain senior executives for whom vesting remains dependent on the stock price hurdle being met regardless of when the executive separates from service. Performance-based RSU awards granted in 2015, 2014, and 2013 provide that vesting remains dependent on the Company’s performance for the full term of the awards notwithstanding the grantee’s earlier retirement.

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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