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Leases - Narrative (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
ft²
Term
operating_lease
Lessee, Lease, Description [Line Items]  
Area of Real Estate Property | ft² 185,000
Number Of Operating Leases | operating_lease 3
Term of Contract ( in years ) 15 years
Renewal Term ( in years ) 10 years
Aggregate rent, Initial term | $ $ 14,738
Percent Of Market Rate 95.00%
Minimum  
Lessee, Lease, Description [Line Items]  
Term of Contract ( in years ) 2 months 12 days
Maximum  
Lessee, Lease, Description [Line Items]  
Term of Contract ( in years ) 6 years 8 months 12 days
New Building  
Lessee, Lease, Description [Line Items]  
Area of Real Estate Property | ft² 75,000
Renewal Term ( in years ) 10 years
Number of terms | Term 2
The Campus  
Lessee, Lease, Description [Line Items]  
Aggregate rent, Initial term | $ $ 88,100