Leases (Supplemental cash flow information related to leases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows for operating leases	$ 2,927	$ 4,901	$ 6,963
Operating cash flows for finance leases	362	88	0
Financing cash flows for finance leases	$ 3,554	$ 1,154	$ 0