Commitments and Contingencies - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Operating lease right-of-use asset in other non-current assets	$ 3,254
Operating lease liability in accrued liabilities	788	$ 769
Operating lease liability in other liabilities	3,497
Total operating lease liabilities	$ 4,285