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Basis of Presentation and Summary of Significant Accounting Policies Radio Conversion Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		30 Months Ended	48 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2022
Subsequent Event [Line Items]
Radio Conversion Cost			$ 119,000		$ 196,000
ADT Radio Conversion Revenue	$ 10,000	$ 9,000	$ 21,000	$ 18,000
Forecast | Minimum
Subsequent Event [Line Items]
Radio Conversion Cost						$ 250,000
Forecast | Maximum
Subsequent Event [Line Items]
Radio Conversion Cost						$ 300,000

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- Definition

Radio Conversion Cost, net

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- Definition

Radio Conversion Revenue

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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