Equity - Schedule of Stock Issuances (Parenthetical) (Details) - shares	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Class A
Class of Stock [Line Items]
Total shares issued (in shares)	623,238	634,493
Advisor
Class of Stock [Line Items]
Issuance of convertible shares (in shares)	5,000
Advisor | Class A
Class of Stock [Line Items]
Total shares issued (in shares)	15,000
Shared issued through primary offering | Class A
Class of Stock [Line Items]
Total shares issued (in shares)	586,207
Advisor | Shared issued through primary offering | Class A
Class of Stock [Line Items]
Total shares issued (in shares)	222,222