Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Preferred Stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	200,000,000	200,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A Common Stock [Member]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	245,000,000	245,000,000
Common stock, shares issued	11,516,609	11,122,135
Common stock, shares outstanding	11,516,609	11,122,135
Class T Common Stock [Member]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	115,000,000	115,000,000
Common stock, shares issued	76,393	36,299
Common stock, shares outstanding	76,393	36,299
Class W Common Stock [Member]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	84,854	43,996
Common stock, shares outstanding	84,854	43,996
Class Y Common Stock [Member]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	261,422	0
Common stock, shares outstanding	261,422	0
Class Z Common Stock [Member]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	143,713	0
Common stock, shares outstanding	143,713	0