Note 6 - Leases & Property, Plant, Equipment and Water Programs	3 Months Ended
Mar. 31, 2022
Notes to Financial Statements
Lessee, Operating Leases and Property, Plant and Equipment Disclosure [Text Block]	NOTE 6 – LEASES & PROPERTY, PLANT, EQUIPMENT AND WATER PROGRAMS The Company has operating leases for right-of-way agreements, corporate offices, vehicles and office equipment. The Company’s leases have remaining lease terms of 1 month to 28 years as of March 31, 2022, some of which include options to extend or terminate the lease. However, the Company is not reasonably certain to exercise options to renew or terminate, and therefore renewal and termination options are not included in the lease term or the right-of-use asset and lease liability balances. The Company's current lease arrangements expire in 2049. The Company does not have any finance leases. From a lessor standpoint, in February 2016, the Company entered into a lease agreement with Fenner Valley Farms LLC (“FVF”) (the “lessee”), pursuant to which FVF is leasing, for a 99-year term, 2,100 acres owned by Cadiz in San Bernardino County, California, to be used to plant, grow and harvest agricultural crops (“FVF Lease Agreement”). As consideration for the lease, FVF paid the Company a one-time payment of $12.0 million upon closing. The Company expects to receive rental income of $420,000 annually over the next five years related to the FVF Lease Agreement. During the three months ended March 31, 2022, $968,000 on construction in progress was placed into service, which included irrigation systems related to the development of 760 acres of alfalfa. Depreciation expense on land improvements, buildings, leasehold improvements, machinery and equipment and furniture and fixtures was $121,000 and $103,000 for the three months ended March 31, 2022 and 2021, respectively.

Note 6 - Leases & Property, Plant, Equipment and Water Programs

3 Months Ended

Mar. 31, 2022

Lessee, Operating Leases and Property, Plant and Equipment Disclosure [Text Block]

NOTE 6 – LEASES & PROPERTY, PLANT, EQUIPMENT AND WATER PROGRAMS

The Company has operating leases for right-of-way agreements, corporate offices, vehicles and office equipment. The Company’s leases have remaining lease terms of 1 month to 28 years as of March 31, 2022, some of which include options to extend or terminate the lease. However, the Company is not reasonably certain to exercise options to renew or terminate, and therefore renewal and termination options are not included in the lease term or the right-of-use asset and lease liability balances. The Company's current lease arrangements expire in 2049. The Company does not have any finance leases.

From a lessor standpoint, in February 2016, the Company entered into a lease agreement with Fenner Valley Farms LLC (“FVF”) (the “lessee”), pursuant to which FVF is leasing, for a 99-year term, 2,100 acres owned by Cadiz in San Bernardino County, California, to be used to plant, grow and harvest agricultural crops (“FVF Lease Agreement”). As consideration for the lease, FVF paid the Company a one-time payment of $12.0 million upon closing. The Company expects to receive rental income of $420,000 annually over the next five years related to the FVF Lease Agreement.

During the three months ended March 31, 2022, $968,000 on construction in progress was placed into service, which included irrigation systems related to the development of 760 acres of alfalfa.

Depreciation expense on land improvements, buildings, leasehold improvements, machinery and equipment and furniture and fixtures was $121,000 and $103,000 for the three months ended March 31, 2022 and 2021, respectively.