XML 94 R60.htm IDEA: XBRL DOCUMENT v3.20.4
Leases- Additional Information (Details)
 1 Months Ended 12 Months Ended
Feb. 29, 2020
USD ($)
ft²
Dec. 31, 2019
ft²
Oct. 31, 2019
USD ($)
ft²
Aug. 31, 2019
USD ($)
ft²
Apr. 30, 2018
USD ($)
ft²
Dec. 31, 2020
USD ($)
Lease
Dec. 31, 2019
USD ($)
ft²
Dec. 31, 2018
USD ($)
Lessee Lease Description [Line Items]                
Number of square feet | ft² 19,900 3,100 14,750 100,000 13,400   3,100  
Lessee, operating lease, option to extend       Cash payment for rent begins in October 2021 and the lease term ends in August 2033, The lease term is through March 2026 and provides for one five-year extension option. options to extend certain of the leases up to 10.0 years    
Lessee, operating lease, rent commencement month and year       2021-10        
Lessee, Operating Lease, Existence of Option to Extend [true false]       true true true    
Lessee, operating lease, extended term of contract       5 years 5 years      
Lease expiration month and year   2025-11 2029-10 2033-08 2026-03      
Letter of credit       $ 2,100,000        
Lease commenced moth and year       2020-12        
Landlord contribution for leasehold improvements       $ 20,000,000.0   $ 14,800,000    
Proceeds from landlord reimbursements           700,000    
Tenant improvement costs incurred           5,200,000    
Tenant improvement costs receivable           $ 4,500,000    
Tenant improvement allowance         $ 2,400,000      
Tenant improvement allowance and commenced $ 600,000              
Operating lease renewal term           10 years    
Operating lease termination period           3 years    
Number of operating lease terminate | Lease           2    
Operating lease expense           $ 5,500,000    
Operating lease variable lease expense           2,600,000    
Rent expenses             $ 5,300,000 $ 4,100,000
Cash paid for amounts included in measurement of lease liabilities, net of tenant improvement allowances received           3,200,000    
Cash received for tenant improvement allowances           2,500,000    
ROU assets obtained in exchange for operating lease liabilities           109,100,000    
Operating lease right-of-use assets           99,350,000    
ASU 2016-02 (Topic 842)                
Lessee Lease Description [Line Items]                
Operating lease right-of-use assets           $ 33,000,000.0    
Maximum                
Lessee Lease Description [Line Items]                
Tenant improvement allowance     $ 700,000          
Operating lease remaining lease term           12 years 8 months 12 days    
Minimum                
Lessee Lease Description [Line Items]                
Operating lease remaining lease term           1 year 3 months 18 days    
Seattle, Washington                
Lessee Lease Description [Line Items]                
Number of square feet | ft²       65,500        
Lessee, operating lease, option to extend       Cash payment for rent of the expanded premises commenced January 2020, four months after the landlord delivered the expanded premises to us for construction of certain tenant improvements, and the lease term for both the existing premises and the expanded premises ends October 2032, subject to our option to twice extend the lease for five years.        
Lessee, operating lease, rent commencement month and year       2020-01        
Lessee, Operating Lease, Existence of Option to Extend [true false]       true        
Lessee, operating lease, extended term of contract       5 years        
Lease expiration month and year       2032-10