Significant Accounting Policies and Estimates	3 Months Ended
Apr. 28, 2018
Accounting Policies [Abstract]
Basis of Presentation and Accounting Policies	Significant Accounting Policies and Estimates Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the amounts reported in these condensed consolidated financial statements and accompanying notes. These estimates are based on the Company’s historical experience and management’s understanding of current facts and circumstances. At the time they are made, the Company believes that such estimates are fair when considered in conjunction with the Company’s consolidated financial position and results of operations taken as a whole. However, actual results could differ materially from those estimates. There have been no material changes to the Company’s significant accounting policies and critical accounting estimates described in the Company’s Transition Report on Form 10-K for the six months ended January 27, 2018 except as described below. Revenue Recognition. The Company performs a substantial majority of its services under master service agreements and other contracts that contain customer-specified service requirements. These agreements include discrete pricing for individual tasks including, for example, the placement of underground or aerial fiber, directional boring, and fiber splicing, each based on a specific unit of measure. Contractual agreements exist when each party involved approves and commits to the agreement, the rights of the parties and payment terms are identified, the agreement has commercial substance, and collectability of consideration is probable. The Company’s services are performed for the sole benefit of its customers, whereby the assets being created or maintained are controlled by the customer and the services the Company performs do not have alternative benefits for the Company. Revenue is recognized over time as services are performed and customers simultaneously receive and consume the benefits provided by the Company. Output measures such as units delivered are utilized to assess progress against specific contractual performance obligations for the majority of the Company’s services. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the services to be provided. For the Company, the output method using units delivered best represents the measure of progress against the performance obligations incorporated within the contractual agreements. This method captures the amount of units delivered pursuant to contracts and is used only when the Company’s performance does not produce significant amounts of work in process prior to complete satisfaction of the performance obligation. For a portion of contract items, representing approximately 5.0% of contract revenues during the three months ended April 28, 2018, units to be completed consist of multiple tasks. For these items, the transaction price is allocated to each task based on relative standalone measurements, such as similar selling prices for similar tasks, or in the alternative, the cost to perform tasks. Revenue is recognized for these items as the tasks are completed as a measurement of progress in the satisfaction of the corresponding performance obligation. For certain contracts, representing approximately 2.5% of contract revenues, the Company uses the cost-to-cost measure of progress. These contracts are generally lump sum jobs that are completed over a three to four month period. Under the cost-to-cost measure of progress, the extent of progress toward completion is measured based on the ratio of costs incurred to date to the total estimated costs. Contract costs include direct labor, direct materials, and subcontractor costs, as well as an allocation of indirect costs. Contract revenues are recorded as costs are incurred. For contracts using the cost-to-cost measure of progress, the Company accrues the entire amount of a contract loss, if any, at the time the loss is determined to be probable and can be reasonably estimated. Accounts receivable, net. The Company grants credit to its customers, generally without collateral, under normal payment terms (typically 30 to 90 days after invoicing). Generally, invoicing occurs within 45 days after the related services are performed. Accounts receivable represents an unconditional right to consideration arising from the Company’s performance under contracts with customers. Accounts receivable include billed accounts receivable, unbilled accounts receivable, and retainage. The carrying value of such receivables, net of the allowance for doubtful accounts, represents their estimated realizable value. Unbilled accounts receivable represent amounts the Company has an unconditional right to receive payment for although invoicing is subject to the completion of certain process or other requirements. Such requirements may include the passage of time, completion of other items within a statement of work, or other billing requirements within contract terms. Certain of the Company’s contracts contain retainage provisions where a portion of the revenue earned is withheld from payment as a form of security until contractual provisions are met. The collectability of retainage is included in the Company’s overall assessment of the collectability of accounts receivable amounts due. The Company expects to collect the outstanding balance of accounts receivable, net (including trade accounts receivable, unbilled accounts receivable, and retainage) within the next twelve months. The Company estimates its allowance for doubtful accounts for specific accounts receivable balances based on historical collection trends, the age of outstanding receivables, and the credit worthiness of the Company’s customers. Contract assets. Contract assets include unbilled amounts typically resulting from arrangements whereby the right to payment is conditioned on completing additional tasks or services for a performance obligation. Contract liabilities. Contract liabilities consist of amounts invoiced to customers in excess of revenue recognized. The Company’s contract asset and liability is reported in a net position on a contract by contract basis at the end of each reporting period. As of April 28, 2018 and January 27, 2018, the contract liabilities balance is classified as current based on the timing of when the Company expects to complete the tasks for the recognition of revenue. Fair Value of Financial Instruments. The Company’s financial instruments primarily consist of cash and equivalents, restricted cash, accounts receivable, income taxes receivable and payable, accounts payable, certain accrued expenses, and long-term debt. The carrying amounts of these items approximate fair value due to their short maturity, except for the fair value of Company’s long-term debt, which is based on observable market-based inputs (Level 2). See Note 13, Debt, for further information regarding the fair value of such financial instruments. The Company’s cash and equivalents are based on quoted market prices in active markets for identical assets (Level 1) as of April 28, 2018 and January 27, 2018. During the three months ended April 28, 2018 and April 29, 2017, the Company had no material nonrecurring fair value measurements of assets or liabilities subsequent to their initial recognition.

Significant Accounting Policies and Estimates

Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the amounts reported in these condensed consolidated financial statements and accompanying notes. These estimates are based on the Company’s historical experience and management’s understanding of current facts and circumstances. At the time they are made, the Company believes that such estimates are fair when considered in conjunction with the Company’s consolidated financial position and results of operations taken as a whole. However, actual results could differ materially from those estimates.

There have been no material changes to the Company’s significant accounting policies and critical accounting estimates described in the Company’s Transition Report on Form 10-K for the six months ended January 27, 2018 except as described below.

Revenue Recognition. The Company performs a substantial majority of its services under master service agreements and other contracts that contain customer-specified service requirements. These agreements include discrete pricing for individual tasks including, for example, the placement of underground or aerial fiber, directional boring, and fiber splicing, each based on a specific unit of measure. Contractual agreements exist when each party involved approves and commits to the agreement, the rights of the parties and payment terms are identified, the agreement has commercial substance, and collectability of consideration is probable. The Company’s services are performed for the sole benefit of its customers, whereby the assets being created or maintained are controlled by the customer and the services the Company performs do not have alternative benefits for the Company. Revenue is recognized over time as services are performed and customers simultaneously receive and consume the benefits provided by the Company. Output measures such as units delivered are utilized to assess progress against specific contractual performance obligations for the majority of the Company’s services. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the services to be provided. For the Company, the output method using units delivered best represents the measure of progress against the performance obligations incorporated within the contractual agreements. This method captures the amount of units delivered pursuant to contracts and is used only when the Company’s performance does not produce significant amounts of work in process prior to complete satisfaction of the performance obligation. For a portion of contract items, representing approximately 5.0% of contract revenues during the three months ended April 28, 2018, units to be completed consist of multiple tasks. For these items, the transaction price is allocated to each task based on relative standalone measurements, such as similar selling prices for similar tasks, or in the alternative, the cost to perform tasks. Revenue is recognized for these items as the tasks are completed as a measurement of progress in the satisfaction of the corresponding performance obligation.

For certain contracts, representing approximately 2.5% of contract revenues, the Company uses the cost-to-cost measure of progress. These contracts are generally lump sum jobs that are completed over a three to four month period. Under the cost-to-cost measure of progress, the extent of progress toward completion is measured based on the ratio of costs incurred to date to the total estimated costs. Contract costs include direct labor, direct materials, and subcontractor costs, as well as an allocation of indirect costs. Contract revenues are recorded as costs are incurred. For contracts using the cost-to-cost measure of progress, the Company accrues the entire amount of a contract loss, if any, at the time the loss is determined to be probable and can be reasonably estimated.

Accounts receivable, net. The Company grants credit to its customers, generally without collateral, under normal payment terms (typically 30 to 90 days after invoicing). Generally, invoicing occurs within 45 days after the related services are performed. Accounts receivable represents an unconditional right to consideration arising from the Company’s performance under contracts with customers. Accounts receivable include billed accounts receivable, unbilled accounts receivable, and retainage. The carrying value of such receivables, net of the allowance for doubtful accounts, represents their estimated realizable value. Unbilled accounts receivable represent amounts the Company has an unconditional right to receive payment for although invoicing is subject to the completion of certain process or other requirements. Such requirements may include the passage of time, completion of other items within a statement of work, or other billing requirements within contract terms. Certain of the Company’s contracts contain retainage provisions where a portion of the revenue earned is withheld from payment as a form of security until contractual provisions are met. The collectability of retainage is included in the Company’s overall assessment of the collectability of accounts receivable amounts due. The Company expects to collect the outstanding balance of accounts receivable, net (including trade accounts receivable, unbilled accounts receivable, and retainage) within the next twelve months. The Company estimates its allowance for doubtful accounts for specific accounts receivable balances based on historical collection trends, the age of outstanding receivables, and the credit worthiness of the Company’s customers.

Contract assets. Contract assets include unbilled amounts typically resulting from arrangements whereby the right to payment is conditioned on completing additional tasks or services for a performance obligation.

Contract liabilities. Contract liabilities consist of amounts invoiced to customers in excess of revenue recognized. The Company’s contract asset and liability is reported in a net position on a contract by contract basis at the end of each reporting period. As of April 28, 2018 and January 27, 2018, the contract liabilities balance is classified as current based on the timing of when the Company expects to complete the tasks for the recognition of revenue.

Fair Value of Financial Instruments. The Company’s financial instruments primarily consist of cash and equivalents, restricted cash, accounts receivable, income taxes receivable and payable, accounts payable, certain accrued expenses, and long-term debt. The carrying amounts of these items approximate fair value due to their short maturity, except for the fair value of Company’s long-term debt, which is based on observable market-based inputs (Level 2). See Note 13, Debt, for further information regarding the fair value of such financial instruments. The Company’s cash and equivalents are based on quoted market prices in active markets for identical assets (Level 1) as of April 28, 2018 and January 27, 2018. During the three months ended April 28, 2018 and April 29, 2017, the Company had no material nonrecurring fair value measurements of assets or liabilities subsequent to their initial recognition.