XML 57 R37.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stockholders' Equity - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Class Of Stock [Line Items]      
Proceeds from issuance of common stock $ 20,148,422 $ 2,612,634  
Common stock, offering costs 1,575,382    
Deferred offering costs 1,345,495   $ 1,502,901
Cash distributions paid 881,578 114,463  
Distributions declared but not yet paid $ 384,568 $ 52,273 $ 258,470
Class P Common Stock      
Class Of Stock [Line Items]      
Common stock, shares issued 742,853    
Common stock issued, average price per share $ 27.12    
Proceeds from issuance of common stock $ 18,573,040    
Common stock, offering costs 1,575,382    
Deferred offering costs 121,943    
Distributions declared 881,578    
Distributions declared but not yet paid 384,568    
Class P Common Stock | Dividend Declared      
Class Of Stock [Line Items]      
Distributions declared 1,007,676    
Cash distributions paid $ 881,578