Contractual Obligations and Commitments - Summary of Other Information related to Operating Leases (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Operating lease right-of-use-assets	$ 11,602
Operating lease liabilities	$ 16,324	[1]
Weighted average remaining lease term	9 years 6 months
Weighted average discount rate	8.00%

[1] Current portion of $1.3 million included in other current liabilities and the difference of $15 million included in long-term portion of lease liabilities on our condensed consolidated balance sheet.