Note 12 - Incentive Plans	3 Months Ended
Note 12 - Incentive Plans	Mar. 31, 2016
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	12. Incentive Plans The Company maintains two equity participation plans, the Second Amended and Restated 1998 Equity Participation Plan (the “Prior Plan”) and the 2010 Equity Participation Plan (the “2010 Plan”) (collectively, the “Plans”). The Prior Plan provides for a maximum of 47,000,000 shares of the Company’s common stock to be issued for qualified and non-qualified stock options and restricted stock grants. Effective May 1, 2012, the 2010 Plan provides for a maximum of 10,000,000 shares of the Company’s common stock to be issued for qualified and non-qualified stock options and other awards, plus the number of shares of common stock which are or become available for issuance under the Prior Plan and which are not thereafter issued under the Prior Plan, subject to certain conditions. Unless otherwise determined by the Board of Directors at its sole discretion, stock options granted under the Plans generally vest ratably over a range of three to five years, expire ten years from the date of grant and are exercisable at the market price on the date of grant. Restricted stock grants generally vest (i) 100% on the fourth or fifth anniversary of the grant, (ii) ratably over three, four and five years or (iii) over ten years at 20% per year commencing after the fifth year. Performance share awards, which vest over a period of one to three years, may provide a right to receive shares of the Company’s common stock or restricted stock based on the Company’s performance relative to its peers, as defined, or based on other performance criteria as determined by the Board of Directors. In addition, the Plans provide for the granting of certain stock options and restricted stock to each of the Company’s non-employee directors (the “Independent Directors”) and permit such Independent Directors to elect to receive deferred stock awards in lieu of directors’ fees. The Company recognized expenses associated with its equity awards of $7.9 million and $8.4 million for the three months ended March 31, 2016 and 2015, respectively. As of March 31, 2016, the Company had $42.6 million of total unrecognized compensation cost related to unvested stock compensation granted under the Plans. That cost is expected to be recognized over a weighted average period of approximately 3.8 years.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.