Leases (Narrative) (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Mar. 31, 2020	Dec. 31, 2019
Leased right-of-use assets		$ 33,288	$ 37,040
Operating lease liability		$ 42,790	$ 47,177
Accounting Standards Update 2016-02 [Member]
Leased right-of-use assets	$ 38,300
Operating lease liability	40,400
Cumulative-effect adjustment on retained earnings	$ 300
Minimum [Member]
Lease term		1 month
Maximum [Member]
Lease term		20 years