Summary Of Term A/B Trust Financings (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Short Term Debt [Line Items]
Debt financing	$ 597,465,241	$ 495,383,033
Term A/B Trust [Member]
Short Term Debt [Line Items]
Debt financing	105,738,451
Term A/B Trust [Member] | San Vicente Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 3,108,855
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | San Vicente Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 1,536,980
Year Acquired	2017
Stated Maturities	2018-06
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Las Palmas Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 1,504,877
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Las Palmas Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 1,484,551
Year Acquired	2017
Stated Maturities	2018-06
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | The Village At Madera Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 2,742,626
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | The Village At Madera Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 1,447,301
Year Acquired	2017
Stated Maturities	2018-07
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Harmony Court Bakers field Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 3,317,948
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Harmony Court Bakers field Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 1,680,903
Year Acquired	2017
Stated Maturities	2018-07
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Summerhill Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 5,724,083
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Summerhill Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 2,843,348
Year Acquired	2017
Stated Maturities	2018-07
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Courtyard Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 9,123,195
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Courtyard Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 5,251,959
Year Acquired	2017
Stated Maturities	2018-07
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Seasons Lakewood Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 6,549,040
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Seasons Lakewood Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 4,436,057
Year Acquired	2017
Stated Maturities	2018-08
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Seasons San Juan Capistrano Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 11,037,610
Year Acquired	2017
Stated Maturities	2022-02
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Seasons San Juan Capistrano Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 5,544,767
Year Acquired	2017
Stated Maturities	2018-08
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Avistar at Wood Hollow [Member]
Short Term Debt [Line Items]
Debt financing	$ 26,827,207
Year Acquired	2017
Stated Maturities	2027-02
Fixed Interest Rate	4.46%
Term A/B Trust [Member] | Avistar at Wilcrest [Member]
Short Term Debt [Line Items]
Debt financing	$ 3,166,185
Year Acquired	2017
Stated Maturities	2027-02
Fixed Interest Rate	4.46%
Term A/B Trust [Member] | Avistar at Copperfield [Member]
Short Term Debt [Line Items]
Debt financing	$ 8,410,959
Year Acquired	2017
Stated Maturities	2027-02
Fixed Interest Rate	4.46%
Term A/B Trust [Member]
Short Term Debt [Line Items]
Debt financing	$ 28,248,188
Term A/B Trust [Member] | Oaks at Georgetown - Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 11,086,113
Year Acquired	2017
Stated Maturities	2022-03
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Oaks at Georgetown - Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 4,683,189
Year Acquired	2017
Stated Maturities	2018-08
Fixed Interest Rate	3.76%
Term A/B Trust [Member] | Harmony Terrace - Series A [Member]
Short Term Debt [Line Items]
Debt financing	$ 6,198,861
Year Acquired	2017
Stated Maturities	2022-03
Fixed Interest Rate	3.89%
Term A/B Trust [Member] | Harmony Terrace - Series B [Member]
Short Term Debt [Line Items]
Debt financing	$ 6,280,025
Year Acquired	2017
Stated Maturities	2018-08
Fixed Interest Rate	3.76%