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Note 12 - Leases (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Lease, Cost [Table Text Block]
    Year Ended
    December 31, 2019
    (in thousands)
Operating lease cost   $
2,084
 
Short term lease cost    
245
 
Sublease income    
(429
)
Total lease cost   $
1,900
 
Supplemental Cash Flow Information Related to Operating Leases [Table Text Block]
    Year Ended
    December 31, 2019
    (in thousands)
Cash paid for amounts included in the measurement of lease liabilities:   $
2,530
 
         
Right-of-use assets obtained in exchange for lease obligations:   $
177
 
Supplemental Balance Sheet Informaton Related to Operating Leases [Table Text Block]
    December 31, 2019
    (in thousands)
Operating lease right-of use assets   $
8,463
 
         
Current portion, operating lease liabilities   $
2,424
 
Operating lease liabilities, long term    
8,224
 
Total operating lease liabilities   $
10,648
 
         
Weighted average remaining lease term (in years)    
8.1
 
Weighted average discount rate    
9.2
%
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
    Operating
    Leases
    (in thousands)
2020   $
2,426
 
2021    
1,945
 
2022    
1,862
 
2023    
1,832
 
2024    
1,587
 
Thereafter    
5,889
 
Total lease payments    
15,541
 
Less interest    
(4,893
)
Total operating lease liabilities   $
10,648
 
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
    Operating
    Leases
    (in thousands)
2019   $
2,250
 
2020  
2,247
 
2021    
1,987
 
2022    
1,966
 
2023    
1,990
 
Thereafter    
7,559
 
Net minimum lease payments   $
17,999