Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Lessee, Lease, Description [Line Items]
Renewal term (up to)	15 years
Termination option (within)	1 year
Sale and leaseback transaction				$ 2,000
Deferred gain from sale and leaseback transaction		$ 93
Net lease cost	$ 16,467	$ 14,500	$ 13,600
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	30 years