Leases (Schedule of lease assets and liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Right of use asset	$ 5,673	$ 0
Finance right of use assets	17,396
Total right of use assets	23,069
Current operating lease liabilities	3,430	0
Current portion of other long-term liabilities	4,164
Operating lease liability (Note 16)	2,071	$ 0
Finance lease liabilities	3,215
Total lease liabilities	$ 12,880