Adoption of ASC Topic 842, Leases - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset, gross	$ 27,834	$ 26,449
Operating lease liabilities	$ 29,533	$ 32,932
Operating leases, weighted average remaining lease term (in years)	6 years 4 months 2 days
Operating leases, weighted average discount rate (percent)	6.82%
Minimum
Lessee, Lease, Description [Line Items]
Incremental borrowing rate used for lease obligations (percent)	4.08%
Maximum
Lessee, Lease, Description [Line Items]
Incremental borrowing rate used for lease obligations (percent)	7.36%