Leases - Narrative (Details) $ in Millions	12 Months Ended	36 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 acquisition
Lessee, Lease, Description [Line Items]
Number of acquisitions | acquisition		3
Increase (decrease) in operating lease assets	$ 6.1
Increase (decrease) in operating lease liabilities	$ 6.0
Weighted-average remaining lease term	6 years	6 years
Weighted-average discount rate (as a percent)	6.00%	6.00%
Operating lease payments	$ 1.8
Operating lease expense	2.1
Sublease income	$ 0.7
Maximum
Lessee, Lease, Description [Line Items]
Remaining contractual term	7 years
Renewal term	7 years	7 years