Summary of Significant Accounting Policies (Leases) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 5,274	$ 5,853
Operating lease liabilities	$ 5,920
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets			$ 7,000
Operating lease liabilities			$ 7,700