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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Estimated Useful Lives of Assets
Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets:

Buildings
13 – 35 years
Building improvements15 years
Tenant improvementsShorter of the term of the related lease or useful life
Acquired in-place leasesRemaining terms of the respective leases
Assembled workforce3 years
Computer equipment3 years
Schedule of Provision for Impairment
The following table summarizes the provision for impairment during the periods indicated below (in thousands):

SuccessorPredecessor
Year Ended December 31,For the Period from
December 23 to December 31,
For the Period from
January 1 to December 22,
20202019
Total provision for impairment$2,690 $— $7,186 
Number of properties: (1)
Classified as held for sale5— 
Disposed within the period3— 

1Includes the number of properties that were impaired and classified as held for sale or impaired and disposed of during the respective periods. Excludes properties that did not have impairment recorded during the year.