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Note 15 - Stock Options and Stock-based Employee Compensation (Details Textual) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Feb. 01, 2016
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)   $ 10.02   $ 10.17
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total   $ 6,721 $ 1,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   5,600   $ 600
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 10,700    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   1 year 328 days    
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)   $ 11.85   $ 12.66
Share-based Payment Arrangement, Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value   $ 0    
Chief Executive Officer [Member] | Non-plan Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 10 years      
The 2011 Long-term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)   2,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)   149 484 484
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period (Year)   3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)   10 years