XML 41 R28.htm IDEA: XBRL DOCUMENT v3.20.1
Note 1 - Summary of Significant Accounting Policies - Estimated Future Annual Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Total $ 1,343 $ 1,523
Finite-lived Intangible Assets, Excluding Projects in Process [Member]    
2020 191  
2021 185  
2022 185  
2023 185  
Thereafter 541  
Total $ 1,287