Summary of Significant Accounting Policies Restricted cash (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	$ 3,977,492	$ 700,000	$ 879,132
Real Estate Taxes [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	600,000	400,000
Security Deposits [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	300,000	200,000
Construction Reserves [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	$ 3,100,000	$ 100,000