Organization and Significant Accounting Policies - Additional disclosures (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) lease Institution property item	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Impairment
Impairments recognized on real estate assets	$ 0
Cash
Number of financial institutions in which custody of cash was held | Institution	3
Deferred Financing Fees
Financing fees capitalized		$ 200,000
Accumulated amortization of deferred financing fees	$ 1,000,000	700,000
Deferred offering costs incurred	0	100,000
Deferred offering costs		218,000
Accounts Receivable
Allowance for doubtful accounts	100,000	200,000
Inventory
Harvested crop	171,000	100,000
Growing crop	1,379,000	122,000
General inventory		119,000
Total inventory	$ 1,550,000	341,000
Revenue Recognition
Number of leases with rent escalations | lease	97
Number of properties with rent escalations | property	214
Variable Lease, Cost	$ 11,400,000
Contingent rent recognized		13,200,000	$ 9,500,000
Income tax
Deferred tax assets	0	0
Deferred tax liabilities	$ 0	0
Required holding period	5 years
Deferred tax liability, built in gain	$ 0
Minimum
Revenue Recognition
Terms of farm leases	1 year
Maximum
Revenue Recognition
Terms of farm leases	25 years
Interest Expense
Deferred Financing Fees
Amortization expense	$ 300,000	300,000	300,000
TRS
Income tax
Taxable income attributable to TRS	$ (200,000)	$ (20,000)	$ 30,000
FPI Loan Program
Deferred Financing Fees
Number of notes issued | item	6