Leases - Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 4,950
Variable lease cost	876
Sublease income	(71)
Total net lease cost	5,755
Cash paid for amounts included in the measurement of lease liabilities	4,858
ROU assets obtained in exchange for lease liabilities, excluding adoption impact	$ 1,505
Weighted average remaining lease term of operating leases, in years	8 years 25 days
Weighted average discount rate of operating leases	3.27%