Commitments and Contingencies Operating Leases Disclosures - ASC 842 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Earnest Money Deposits and Pre-acquisition Costs Written-Off			$ 1,490	$ 520
Short-term Lease, Cost	$ 100	$ 100	300	300
Operating Lease, Expense	300	300	900	900
Operating Lease, Payments	$ 300	$ 300	$ 900	$ 900
Operating Lease, Weighted Average Remaining Lease Term	2 years 7 months 6 days		2 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	5.30%		5.30%