Goodwill and Intangible Assets - Intangible Asset Remaining Useful Life (Details)	3 Months Ended
Mar. 31, 2020
Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets, weighted average remaining useful life	3 years 2 months 12 days
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets, weighted average remaining useful life	8 years 1 month 6 days

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration