Quarterly report pursuant to Section 13 or 15(d)

Financing Notes Receivable - Narrative (Details)

v3.10.0.1
Financing Notes Receivable - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Mar. 31, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Provision for loan losses $ 0   $ 0 $ 500,000 $ 0  
REIT Loan [Member] | SWD Enterprises [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Receivable $ 1,000,000     $ 1,000,000   $ 1,500,000
SWD Enterprises [Member]            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Provision for loan losses   $ 500,000