Real Estate (Narrative) (Details) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Accumulated depreciation and amortization on properties	$ 45,835,000		$ 44,340,000
Real estate depreciation expense	3,427,000	$ 3,815,000
Lease future minimum payments 2019	47,313,124
Lease future minimum payments 2020	63,997,726
Lease future minimum payments 2021	63,459,383
Lease future minimum payments 2022	63,215,702
Lease future minimum payments 2023	56,648,437
Lease future minimum payments 2024	54,268,495
Lease future minimum payments there after	$ 567,471,124
Secured Debt
Debt Instrument [Line Items]
Fae value of debt			$ 101,750,000,000
Interest rate, percent			4.21%

Face (par) amount of debt instrument at time of issuance.

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The cumulative amount of depreciation for real estate property held for investment purposes.

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