Commitments and Contingencies (Schedule of Future Minimum Payments) (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Stock-Based Compensation [Abstract]
Operating lease liability, current, 2019	$ 478
Future interest, 2019	32
Future Lease payments, 2019	510
Operating lease liability, current, 2020	171
Operating lease liability, noncurrent, 2020	174
Future interest, 2020	5
Future Lease payments, 2020	350
Operating lease liability, current, Total	649
Operating lease liability, noncurrent, Total	174
Future interest, Total	37
Future Lease payments, Total	$ 860