Organization and Significant Accounting Policies - Inventory (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Deferred Financing Fees
Financing fees capitalized	$ 391,000
Accumulated amortization of deferred financing fees	400,000	$ 700,000
Deferred offering costs incurred	174,937	52,000
Inventory
Cost of harvested crop included in property operating expenses	100,000	$ 300,000
Harvested crop	75,000		$ 283,000
Total inventory	$ 75,000		$ 283,000