Leases (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Right-of-use asset	$ 7,987	$ 8,700
Operating lease liabilities	8,267	$ 8,700
Right-of-use asset recognized as non-cash asset addition	100
Cash paid for amounts included in measurement of operating lease liability	900
Total operating lease costs	2,200
Operating lease costs	900
Operating lease revenues	$ 3,300
Minimum
Lessee, Lease, Description [Line Items]
Operating leases remaining term, lessee	1 year
Operating leases remaining term, lessor	2 years
Maximum
Lessee, Lease, Description [Line Items]
Operating leases remaining term, lessee	11 years
Operating leases remaining term, lessor	10 years