Organization and Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Deferred Financing Fees
Financing fees capitalized	$ 370		$ 370
Accumulated amortization of deferred financing fees	500	$ 700	500	$ 700
Deferred offering costs incurred			500	100
Inventory
Cost of harvested crop included in property operating expenses	100	$ 200	400	$ 200
Harvested crop					$ 283
Growing crop	92		92
Total inventory	$ 92		$ 92		$ 283