Leases (Lease Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating leases expense	$ 779	$ 694	$ 1,460	$ 1,422
Short-term leases expense	56	107	130	230
Payments on operating lease obligations	$ 665	$ 722	$ 1,335	$ 1,468