Quarterly report pursuant to Section 13 or 15(d)

Amortizable Intangible Assets - Summary of Significant Classes of Amortizable Intangible Assets (Detail)

v3.21.2
Amortizable Intangible Assets - Summary of Significant Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Cost $ 61,702 $ 62,914
Accumulated Amortization (58,476) (58,897)
Net 3,226 4,017
Customer Lists and Contracts [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 23,225 24,012
Accumulated Amortization (21,770) (22,533)
Net 1,455 1,479
Domain and Brand Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 20,289 20,350
Accumulated Amortization (19,492) (19,127)
Net 797 1,223
Favorable and Assigned Leases [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,188 2,188
Accumulated Amortization (1,951) (1,943)
Net 237 245
Subscriber Base and Lists [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 9,522 9,886
Accumulated Amortization (8,809) (8,974)
Net 713 912
Author Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,771 2,771
Accumulated Amortization (2,770) (2,765)
Net 1 6
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,041 2,041
Accumulated Amortization (2,028) (1,954)
Net 13 87
Other Amortizable Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 1,666 1,666
Accumulated Amortization (1,656) (1,601)
Net $ 10 $ 65