Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Amortizable Intangible Assets - Summary of Significant Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Cost $ 62,717 $ 64,444
Accumulated Amortization (54,547) (53,180)
Net 8,170 11,264
Customer Lists and Contracts [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 23,833 24,673
Accumulated Amortization (21,510) (21,798)
Net 2,323 2,875
Domain and Brand Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 20,332 21,358
Accumulated Amortization (17,347) (16,758)
Net 2,985 4,600
Favorable and Assigned Leases [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,188 2,256
Accumulated Amortization (1,911) (1,953)
Net 277 303
Subscriber Base and Lists [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 9,886 9,672
Accumulated Amortization (7,988) (7,198)
Net 1,898 2,474
Author Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,771 2,771
Accumulated Amortization (2,571) (2,454)
Net 200 317
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,041 2,048
Accumulated Amortization (1,758) (1,641)
Net 283 407
Other Amortizable Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 1,666 1,666
Accumulated Amortization (1,462) (1,378)
Net $ 204 $ 288