Leases (Schedule of Future Minimum Lease Commitments ) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019 (excluding the six months ended June 30, 2019)	$ 1,462
2020	2,951
2021	2,985
2022	2,641
2023	1,665
Thereafter	2,685
Total lease payments	14,389
Less: imputed interest	(1,411)
Total	$ 12,978