Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Details)

v3.19.1
Subsequent Events - Additional Information (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Apr. 19, 2019
USD ($)
lease
Apr. 09, 2019
USD ($)
a
option
$ / shares
May 07, 2019
USD ($)
shares
Mar. 31, 2019
USD ($)
a
Mar. 31, 2018
USD ($)
a
Subsequent Event [Line Items]          
Area of real estate property (in acres) | a       73,900 63,351
Base management fee       $ 905 $ 656
Series B Preferred Stock | Subsequent Event          
Subsequent Event [Line Items]          
Sale of stock sold under sale agreement (in shares) | shares     345,031    
Proceeds from issuance of preferred stock     $ 8,500    
Net proceeds from issuance of stock     7,800    
Distribution per Share | $ / shares   $ 0.375      
Common Stock | Subsequent Event          
Subsequent Event [Line Items]          
Distribution per Share | $ / shares   $ 0.13350      
Gladstone Securities          
Subsequent Event [Line Items]          
Payment of management fees       $ 1,557  
Sales Commissions and Broker-Dealer Fees | Gladstone Securities | Series B Preferred Stock | Subsequent Event          
Subsequent Event [Line Items]          
Payment of management fees     725    
Sales Commissions and Broker-Dealer Fees | Gladstone Securities | Series B Preferred Stock | Subsequent Event          
Subsequent Event [Line Items]          
Base management fee     $ 767    
Farm, 928 Acres, Madera County, California [Member] | Subsequent Event          
Subsequent Event [Line Items]          
Area of real estate property (in acres) | a   928      
Total Purchase Price   $ 28,600      
Lease term (in years)   10 years 6 months 22 days      
Number of renewal options | option   2      
Renewal term   5 years      
Total annualized straight-line rent   $ 1,721      
Fresno County, California | Subsequent Event          
Subsequent Event [Line Items]          
Number of purchase agreements | lease 2        
Aggregate purchase price $ 70,000