Leases (Lease Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating leases expense	$ 594	$ 846	$ 2,054	$ 2,268
Short-term leases expense	97	154	227	384
Payments on operating lease obligations	$ 610	$ 719	$ 1,945	$ 2,187