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Note 14 - Commitments and Contingencies - Future Purchase Obligations and Minimum Rental Commitments for Leasehold Properties and Operating Leases With Non-cancelable Terms (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
2019 $ 3,779
2020 1,624
2021 234
2022 33
Total 5,670
Minimum Rental Commitments for Leasehold Properties [Member]  
2019 1,431
2020 1,624
2021 234
2022 33
Total 3,322
Commitments for Other Lease Obligations [Member]  
2019 1,764
2020
2021
2022
Total 1,764
Other Purchase Obligations [Member]  
2019 584
2020
2021
2022
Total $ 584