Leases (Lease liability maturity) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
2019	$ 1,982
2020	4,058
2021	4,174
2022	4,294
2023	4,417
Thereafter	18,134
Total future minimum lease payments	37,059
Less: discount	(6,523)
Total lease liability	$ 30,536