Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease, weighted average remaining lease term (in years)	4 years 1 month 6 days
Finance lease, weighted average remaining lease term (in years)	2 years 7 months 6 days
Operating lease, weighted average discount rate (as a percent)	5.70%
Finance lease, weighted average discount rate (as a percent)	4.60%
Sublease income	$ 2.2	$ 1.8
Office space sublease payments to be received		$ 8.3