Leases (Lease Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Components of lease expense:
Operating lease expense	$ 1,782	$ 2,029
Less sublease income	53	122
Net lease expense	1,729	1,907
Cash flows information related to leases:
Operating cash outflow from operating leases	$ 1,747	$ 1,639