Leases (Schedule of lease assets and liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating right of use asset	$ 6,488	$ 5,673
Finance right of use assets	15,985	17,396
Total right of use assets	22,473	23,069
Current operating lease liability	3,985	3,430
Current finance lease liability	4,272	4,164
Operating lease liability	2,431	2,071
Finance lease liability	0	3,215
Total lease liability	$ 10,688	$ 12,880