For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

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Goodwill and Intangible Assets Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Jan. 31, 2017	Jun. 30, 2019	Dec. 31, 2026	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 100	$ 37
Intangible assets, gross (excluding goodwill)		$ 5,197		$ 5,661
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		7 years
Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful lives		4 years
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful lives		8 years 8 months 31 days
Finite-lived intangible assets
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining useful lives		4 years 10 months 30 days
Headland Media Limited \| Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		10 years
Headland Media Limited \| Distribution rights
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		15 years
Headland Media Limited \| Internally developed software
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		3 years
Headland Media Limited \| Proprietary content
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		2 years
Q1 2017 Acquisition
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross (excluding goodwill)		$ 214
Contingent consideration		$ 37
Q1 2017 Acquisition \| Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful lives		10 years
Forecast \| Q1 2017 Acquisition
Finite-Lived Intangible Assets [Line Items]
Contingent consideration, value, high			$ 114