Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Amortizable Intangible Assets - Summary of Significant Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Cost $ 62,463 $ 64,444
Accumulated Amortization (53,402) (53,180)
Net 9,061 11,264
Customer Lists and Contracts [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 23,641 24,673
Accumulated Amortization (21,197) (21,798)
Net 2,444 2,875
Domain and Brand Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 20,280 21,358
Accumulated Amortization (16,891) (16,758)
Net 3,389 4,600
Favorable and Assigned Leases [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,188 2,256
Accumulated Amortization (1,903) (1,953)
Net 285 303
Subscriber Base and Lists [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 9,886 9,672
Accumulated Amortization (7,727) (7,198)
Net 2,159 2,474
Author Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,771 2,771
Accumulated Amortization (2,532) (2,454)
Net 239 317
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 2,031 2,048
Accumulated Amortization (1,718) (1,641)
Net 313 407
Other Amortizable Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Cost 1,666 1,666
Accumulated Amortization (1,434) (1,378)
Net $ 232 $ 288