Note 22 - Leases - Lessee Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2021 USD ($)
2022, operating leases	$ 3,079
2022, finance leases	3,326
2023, operating leases	2,329
2023, finance leases	1,549
2024, operating leases	2,043
2024, finance leases	854
2025, operating leases	1,656
2025, finance leases	693
2026, operating leases	1,519
2026, finance leases	514
Thereafter, operating leases	18,978
Thereafter, finance leases	3,313
Total future minimum lease payments, operating leases	29,604
Total future minimum lease payments, finance leases	10,249
Less imputed interest, operating leases	10,578
Less imputed interest, finance leases	3,106
Total, operating leases	19,026
Total, finance leases	7,143
Two Contracted Geothermal Assets in Nevada [Member]
2022, financing liability	17,238	[1]
2023, financing liability	22,368	[1]
2024, financing liability	102,074	[1]
2025, financing liability	13,324	[1]
2026, financing liability	18,118	[1]
Thereafter, financing liability	113,462	[1]
Total future minimum lease payments	286,584	[1]
Less imputed interest, financing liability	33,720	[1]
Total, financing liability	$ 252,864	[1]

[1] Financing liability was assumed as part of the Terra-Gen business combination transaction as further described under Note 2 to the consolidated financial statements and is related to the sale and lease-back transaction of the Dixie Valley geothermal assets.