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Note 12 - Related Party Transactions (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Mar. 26, 2018
Mar. 12, 2018
Sep. 30, 2019
Sep. 30, 2018
Mar. 31, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 08, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number   5,157,998            
Share-based Payment Arrangement, Accelerated Cost         $ 14,667,000      
Repayments of Long-term Debt, Total           $ 5,851,000 $ 72,229,000  
Share-based Payment Arrangement, Expense     $ 2,790,000 $ 2,594,000   8,019,000 27,569,000  
Promissory Notes [Member]                
Debt Instrument, Interest Rate, Stated Percentage               10.00%
Debt Instrument, Face Amount               $ 10,000,000
Restricted Stock Units (RSUs) [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number   4,960,498            
Share-based Payment Arrangement, Expense     $ 1,562,000 $ 2,675,000   $ 4,733,000 27,871,000  
Marlin Capital Investments, LLC [Member]                
Common Shares to be Received by RSU Holder     2,000,000     2,000,000    
Marlin Capital Investments, LLC [Member] | Restricted Stock Units (RSUs) [Member]                
Share Based Compensation Expense (Benefit)             (1,792,000)  
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number   500,000            
Share-based Payment Arrangement, Accelerated Cost   $ 906,000,000            
Frost Gamma [Member] | Promissory Notes [Member]                
Debt Instrument, Face Amount               5,000,000
Repayments of Long-term Debt, Total             533,000  
Repayments of Long-term Debt Including Accrued Interest $ 5,713,000              
Board of Directors Chairman [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number         2,500,000      
Consultancy Services Agreement Period 4 years              
Share-based Payment Arrangement, Noncash Expense, Total             302,000  
Share-based Payment Arrangement, Expense         $ 6,468,000      
Board of Directors Chairman [Member] | Promissory Notes [Member]                
Debt Instrument, Face Amount               4,000,000
Repayments of Long-term Debt, Total             426,000  
Repayments of Long-term Debt Including Accrued Interest $ 4,570,000              
Board of Directors Chairman [Member] | Restricted Stock Units (RSUs) [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number   2,500,000            
Investor [Member] | Promissory Notes [Member]                
Debt Instrument, Face Amount               $ 1,000,000
Repayments of Long-term Debt, Total             $ 107,000  
Repayments of Long-term Debt Including Accrued Interest $ 1,143,000