Note 15 - 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, 2019 USD ($)
2020	$ 5,638
2021	4,312
2022	2,133
2023 and thereafter	123
Total	12,206
Minimum Rental Commitments for Leasehold Properties [Member]
2020	530
2021	141
2022	113
2023 and thereafter	123
Total	907
Commitments for Other Lease Obligations [Member]
2020	3,989
2021	4,070
2022	2,020
2023 and thereafter
Total	10,079
Other Purchase Obligations [Member]
2020	1,119
2021	101
2022
2023 and thereafter
Total	$ 1,220