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Note 18 - Equity Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted-Average |  |  | Aggregate |
|  |  |  |  |  | Weighted-Average |  |  | Remaining Contractual |  |  | Intrinsic |
|  | Shares |  |  | Exercise Price |  |  | Life (in years) |  |  | Value (in thousands) |
Balance, December 31, 2013 |  |  | 2,812,874 |  |  |  | 31.81 |  |  |  | 1.9 |  |  | $ | 2,119 |
Exercised |  |  | (5,500 | ) |  | $ | 23.37 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (474,470 | ) |  |  | 29.28 |  |  |  |  |  |  |  |  |
Balance, December 31, 2014 |  |  | 2,332,904 |  |  |  | 32.34 |  |  |  | 1.2 |  |  | $ | 1,388 |
Exercised |  |  | (214,580 | ) |  | $ | 23.37 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (1,087,154 | ) |  |  | 35.13 |  |  |  |  |  |  |  |  |
Balance, December 31, 2015 |  |  | 1,031,170 |  |  |  | 31.27 |  |  |  | 0.9 |  |  | $ | 3,268 |
Exercised |  |  | (327,830 | ) |  | $ | 23.37 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (620,670 | ) |  |  | 36.50 |  |  |  |  |  |  |  |  |
Balance, December 31, 2016 |  |  | 82,670 |  |  |  | 23.37 |  |  |  | 1.1 |  |  | $ | 1,211 |
Exercisable, December 31, 2016 |  |  | 82,670 |  |  | $ | 23.37 |  |  |  | 1.1 |  |  | $ | 1,211 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
|  | Units |
Balance at December 31, 2013 |  |  | 379,458 |
Granted |  |  | 135,699 |
Vested |  |  | (122,832 | )
Cancelled or forfeited |  |  | (5,860 | )
Balance at December 31, 2014 |  |  | 386,465 |
Granted |  |  | 191,518 |
Vested |  |  | (26,924 | )
Cancelled or forfeited |  |  | (8,684 | )
Balance at December 31, 2015 |  |  | 542,375 |
Granted |  |  | 206,372 |
Vested |  |  | (13,780 | )
Cancelled or forfeited |  |  | (7,548 | )
Balance at December 31, 2016 |  |  | 727,419 |
Schedule Of Tax Benefit Short Fall From Share Based Payment Arrangements [Table Text Block] |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (In thousands) |
Short-fall of tax deductions in excess of grant-date fair value |  | $ | - |  |  | $ | (5,348 | ) |  | $ | (1,285 | )
Benefit of tax deductions on grant-date fair value |  |  | - |  |  |  | 6,485 |  |  |  | 1,292 |
Total benefit of tax deductions |  | $ | - |  |  | $ | 1,137 |  |  | $ | 7 |

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