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Property and Equipment - Schedule of Cost Basis and Estimated Useful Lives of Property and Equipment (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Computer hardware and software [1] $ 27,660 $ 105,175
Leasehold improvements [1] 58,294 73,951
Furniture, fixtures and equipment [1] 23,145 37,362
Building and improvements 8,485 8,578
Library materials [1] 171 982
Vehicles [1] 56 107
Construction in progress 1,128 1,945
Property plant and equipment, Total 118,939 228,100
Less-accumulated depreciation [1] (92,933) (198,052)
Total property and equipment, net $ 26,006 $ 30,048
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) [1] Shorter of Life of Leaseor Useful Life  
Computer Hardware and Software [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) [1] 3 years  
Furniture, Fixtures and Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) [1] 5 years  
Furniture, Fixtures and Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) [1] 10 years  
Building and Improvements [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) 15 years  
Building and Improvements [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) 35 years  
Library Materials [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) [1] 10 years  
Vehicles [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, estimated useful life (in years) [1] 5 years  
[1] Property and equipment which were fully depreciated and no longer in use by the Company were retired during the year ended December 31, 2019, therefore both the cost of the asset and the related accumulated depreciation balances were reduced to zero for the related assets.