Leases (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Lessee, Lease, Description [Line Items]
Right of use asset	$ 16,760		$ 16,760
Lease liability	17,466		17,466
Operating lease expense	$ 1,300	$ 900	$ 2,700	$ 1,700
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year		1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	7 years		7 years