Additional expenses incurred for other related party transactions.

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Annual Monitoring Fee

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Maximum Advisory Fee Obligation

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Monitoring Fees

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Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of selling, general and administrative expense classified as other.

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The cash outflow for loan and debt issuance costs.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets.

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The cash inflow associated with the amount received by a corporation from a shareholder during the period.

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Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Related Party Transactions (Detail) - USD ($)	1 Months Ended		12 Months Ended
Related Party Transactions (Detail) - USD ($)	Jul. 31, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Additional expenses incurred for other related-party transactions			$ 2,500,000	$ 2,700,000	$ 3,500,000
Accrued expenses and other current liabilities			147,489,000	136,715,000
Prepaid expenses and other current assets				1,800,000
Monitoring fees			0	4,793,000
Deferred financing cost, net			28,161,000	34,423,000	38,766,000
Financing costs			0	11,317,000	18,277,000
Proceeds from contributed capital			4,700,000	4,700,000	0
7.875% Senior Secured Notes Due 2022 \| Senior Notes
Related Party Transaction [Line Items]
Deferred financing cost, net			9,532,000	12,799,000	16,067,000
Solar \| Affiliated Entity
Related Party Transaction [Line Items]
Sublease and other administrative expenses			9,200,000	17,300,000	2,800,000
Due from Solar			2,200,000	0
Wireless \| Affiliated Entity
Related Party Transaction [Line Items]
Transactions associated with spin-off services			1,300,000
Blackstone Management Partners L.L.C. \| Affiliated Entity
Related Party Transaction [Line Items]
Prepaid expenses and other current assets			5,600,000	4,100,000	3,500,000
Blackstone Management Partners L.L.C. \| Affiliated Entity \| Minimum
Related Party Transaction [Line Items]
Annual monitoring base fee, minimum			2,700,000
Blackstone Advisory Partners L.P. \| Affiliated Entity
Related Party Transaction [Line Items]
Deferred financing cost, net			1,200,000
Blackstone Advisory Partners L.P. \| 7.875% Senior Secured Notes Due 2022 \| Senior Notes \| Affiliated Entity
Related Party Transaction [Line Items]
Financing costs				600,000
Affiliated Entity \| Blackstone Advisory Partners L.P.
Related Party Transaction [Line Items]
Outstanding borrowings			103,600,000	75,100,000
Affiliated Entity \| Vivint Smart Home, Inc.
Related Party Transaction [Line Items]
Proceeds from contributed capital	$ 4,700,000	$ 4,700,000
Blackstone Management Partners LLC Support And Services Agreement \| Blackstone Management Partners L.L.C. \| Affiliated Entity
Related Party Transaction [Line Items]
Fee paid for support services by BMP to Company			1,500,000
Expenses from transactions with related party			0	0	$ 0
Reimbursement for certain other fees incurred by Blackstone			1,800,000
Vivint
Related Party Transaction [Line Items]
Accrued expenses and other current liabilities			$ 1,000,000	$ 200,000