Notes Payable - Deferred Loan Costs (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Deferred loan costs	$ 7,155	$ 7,155
Less:  deferred loan cost accumulated amortization	(3,655)	(3,401)
Total cost, net of accumulated amortization	$ 3,500	$ 3,754