Leases (Components of Lease Expense and Other Lease Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 750	$ 790	$ 2,291	$ 2,146
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases	758	392	1,749	1,495
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 0	$ 0	$ 0