Leases - Narrative (Details)	9 Months Ended
	Sep. 30, 2021 floor
Third-Party One [Member]
Lessee, Lease, Description [Line Items]
Lessor, Operating Lease, Number Of Floors Leased	1
Third-Party Two [Member]
Lessee, Lease, Description [Line Items]
Lessor, Operating Lease, Number Of Floors Leased	2
Minimum
Lessee, Lease, Description [Line Items]
Option to extend, term (in years)	1 year
Option to terminate, term (in years)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Option to extend, term (in years)	7 years