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Note 13 - Stock Based Compensation (Details Textual) - Two Thousand Eleven Omnibus Incentive Plan [Member] - USD ($)
1 Months Ended 3 Months Ended
Jan. 31, 2016
Mar. 31, 2016
Mar. 31, 2015
Employee Stock Option [Member]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   1 year 36 days  
Allocated Share-based Compensation Expense   $ 35,000 $ 36,000
Restricted Stock Units (RSUs) [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   1 year  
Restricted Stock Units (RSUs) [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   5 years  
Restricted Stock Units (RSUs) [Member]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   2 years 146 days  
Allocated Share-based Compensation Expense   $ 415,000 $ 79,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized   $ 2,000,000  
Cash [Member]      
Performance Award Plan, Matched Amount, by Type of Award 50.00%    
Restricted Stock [Member]      
Performance Award Plan, Matched Amount, by Type of Award 50.00%    
Minimum [Member]      
Performance Award Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 0.00%    
Maximum [Member]      
Performance Award Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 100.00%    
Share-based Compensation Award, Tranche One [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 33.00%    
Share-based Compensation Award, Tranche Two [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 33.00%    
Share-based Compensation Award, Tranche Three [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 33.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   2,144,743  
Share-based Compensation Award Term   10 years  
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period   5 years  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term   7 years  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term   2 years 255 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value   $ 590,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term   2 years 255 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value   $ 464,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   $ 110,000