Leases - Additional Information (Details)	9 Months Ended
	Sep. 30, 2019
Lessee Lease Description [Line Items]
Operating lease, option to extend	true
Operating lease, option to extend, description	some of which include options to extend the leases for up to two years
Operating lease, option to terminate	true
Operating lease, option to terminate, description	some of which include options to terminate the leases within the year
Maximum
Lessee Lease Description [Line Items]
Operating lease, remaining lease terms	11 years
Operating lease, options to extend, years	2 years