Commitments and Contingencies - Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Right-of-use assets:
Operating leases	$ 9,434	$ 9,668
Finance leases	3	5
Total right-of-use assets	9,437	9,673
Current lease liabilities:
Operating leases	920	556
Finance leases	4	5
Long-term leases liabilities
Operating leases	9,113	9,389
Total lease liabilities	$ 10,037	$ 9,950