Business Combination - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018	Oct. 01, 2018
Business Acquisition [Line Items]
Financing lease obligation	$ 249,848	$ 227,231
Telecom Holding Parent LLC
Business Acquisition [Line Items]
Cash and cash equivalents	15,549		$ 15,549
Restricted cash	25,743		25,743
Accounts receivable	168,313		170,466
Inventory	85,634		96,067
Property, plant and equipment, net	217,991		217,991
Other assets	34,062		39,145
Intangible assets, net	200,700		200,700
Financing lease obligation	79,151		48,235
Financing lease obligation	(194,700)		(194,700)
Deferred revenue	(38,238)		(43,502)
Other liabilities	(310,385)		(291,874)
Total net assets	283,820		$ 283,820
ASU 2017-01 \| Telecom Holding Parent LLC
Business Acquisition [Line Items]
Accounts receivable	(2,153)
Inventory	(10,433)
Other assets	(5,083)
Financing lease obligation	30,916
Deferred revenue	5,264
Other liabilities	$ (18,511)

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restricted Cash and Equivalents

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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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Amount of lease obligation assumed in business combination.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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