Note 3 - Revenue - Future Performance Obligations (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Remainder of 2021, Revenue from Leases	$ 29,283
Total, Remainder of 2021	48,905
2022, Revenue from Leases	50,693
Total, 2022	82,501
2023, Revenue from Leases	43,499
Total, 2023	71,630
2024, Revenue from Leases	43,546
Total, 2024	71,720
2025, Revenue from Leases	38,549
Total, 2025	65,406
Thereafter, Revenue from Leases	45,862
Total, Thereafter	82,940
Revenue related to future performance obligation	171,670	[1]
Revenue from Leases	251,432
Total revenue related to future performance obligations	$ 423,102

[1] Excluded from the table is revenue that is either constrained or related to performance obligations that are wholly unsatisfied as of June 30, 2021.