Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying unaudited interim condensed consolidated financial statements include the accounts of the Company prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”). All intercompany balances and transactions have been eliminated in consolidation. In the opinion of the Company’s management, the unaudited interim condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation.
Use of Estimates	Use of Estimates The preparation of these financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the unaudited interim condensed consolidated financial statements and accompanying notes. Significant items subject to such estimates and assumptions include the fair values assigned to net assets acquired (including identifiable intangibles) in business combinations, the carrying amounts of long-lived assets and goodwill, the carrying amount of installation and service parts, the allowance for credit loss, valuation allowances on deferred tax assets, asset retirement obligations, contingent consideration and the recognition and measurement of loss contingencies. Management believes that its estimates and assumptions are reasonable in the circumstances; however, actual results could differ materially from those estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting Standards Adopted In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. ASU 2017-04 simplifies the accounting for goodwill impairment and removes Step 2 of the goodwill impairment test. Goodwill impairment is now the amount by which a reporting unit’s carrying value exceeds its fair value limited to the total amount of goodwill allocated to that reporting unit. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill for all reporting units, even those with zero or negative carrying amounts. The Company adopted the ASU as of January 1, 2020 and followed the one-step method in evaluating potential goodwill impairment for the first and second quarters of fiscal 2020, refer to Note 6, Goodwill and Intangible Assets. The adoption of this guidance did not have a material impact on our condensed consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and issued certain amendments within ASU 2019-04, ASU 2019-05 and ASU 2019-11, respectively. The guidance replaced the incurred loss impairment model and applies a new model, current expected credit losses (“CECL”), that requires entities to estimate expected credit losses measured over the contractual life of an instrument that consider supportable forecasts of future economic conditions in addition to information about past events and current conditions. An entity is required to measure and record an allowance for credit loss upon initial recognition of a financial asset, and present in-scope assets at amortized cost net of the amount expected to be collected. Under legacy GAAP, the Company recognized credit losses on trade receivables when it was probable that a loss has been incurred. The Company adopted the CECL standard as of January 1, 2020 through a cumulative effect adjustment of $0.7 million, net of tax, to the opening balance of Accumulated deficit. The adjustment increased Accumulated deficit and increased the Allowance for credit loss accounts. Subsequent impacts to the Allowance for credit loss have been recorded through the Credit loss expense account included within Selling, general and administrative expenses in our condensed consolidated statements of operations and as an Allowance for credit loss on our condensed consolidated balance sheet. See Note 4. Accounts Receivable, Net for additional information. Accounting Standards Not Yet Adopted In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The ASU removes specific exceptions to the general principles in Topic 740 in U.S. GAAP including the exception to the incremental approach for intra-period tax allocation, exceptions to accounting for basis differences when there are ownership changes in foreign investments, and the exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. The ASU also simplifies current guidance in relation to franchise taxes that are partially based on income, transactions with a government that result in a step-up in tax basis of goodwill, separate financial statements of legal entities that are not subject to tax, and enacted changes in tax laws in interim periods. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020 and interim periods within those fiscal years. Early adoption is permitted. The impact of the implementation of this standard is still being determined by the Company. On March 12, 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The ASU provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. It provides optional expedients and exceptions for applying GAAP to contract modifications, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The ASU is in effect for a limited time through December 31, 2022, to help stakeholders during the global market-wide reference rate transition period. The impact of the implementation of this standard is still being determined by the Company.

Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2020

The accompanying unaudited interim condensed consolidated financial statements include the accounts of the Company prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”). All intercompany balances and transactions have been eliminated in consolidation. In the opinion of the Company’s management, the unaudited interim condensed consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation.

Use of Estimates

The preparation of these financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the unaudited interim condensed consolidated financial statements and accompanying notes. Significant items subject to such estimates and assumptions include the fair values assigned to net assets acquired (including identifiable intangibles) in business combinations, the carrying amounts of long-lived assets and goodwill, the carrying amount of installation and service parts, the allowance for credit loss, valuation allowances on deferred tax assets, asset retirement obligations, contingent consideration and the recognition and measurement of loss contingencies.

Management believes that its estimates and assumptions are reasonable in the circumstances; however, actual results could differ materially from those estimates.

Recent Accounting Pronouncements

Accounting Standards Adopted

In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2017-04, Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. ASU 2017-04 simplifies the accounting for goodwill impairment and removes Step 2 of the goodwill impairment test. Goodwill impairment is now the amount by which a reporting unit’s carrying value exceeds its fair value limited to the total amount of goodwill allocated to that reporting unit. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill for all reporting units, even those with zero or negative carrying amounts. The Company adopted the ASU as of January 1, 2020 and followed the one-step method in evaluating potential goodwill impairment for the first and second quarters of fiscal 2020, refer to Note 6, Goodwill and Intangible Assets. The adoption of this guidance did not have a material impact on our condensed consolidated financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, and issued certain amendments within ASU 2019-04, ASU 2019-05 and ASU 2019-11, respectively. The guidance replaced the incurred loss impairment model and applies a new model, current expected credit losses (“CECL”), that requires entities to estimate expected credit losses measured over the contractual life of an instrument that consider supportable forecasts of future economic conditions in addition to information about past events and current conditions. An entity is required to measure and record an allowance for credit loss upon initial recognition of a financial asset, and present in-scope assets at amortized cost net of the amount expected to be collected. Under legacy GAAP, the Company recognized credit losses on trade receivables when it was probable that a loss has been incurred.

The Company adopted the CECL standard as of January 1, 2020 through a cumulative effect adjustment of $0.7 million, net of tax, to the opening balance of Accumulated deficit. The adjustment increased Accumulated deficit and increased the Allowance for credit loss accounts. Subsequent impacts to the Allowance for credit loss have been recorded through the Credit loss expense account included within Selling, general and administrative expenses in our condensed consolidated statements of operations and as an Allowance for credit loss on our condensed consolidated balance sheet. See Note 4. Accounts Receivable, Net for additional information.

Accounting Standards Not Yet Adopted

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The ASU removes specific exceptions to the general principles in Topic 740 in U.S. GAAP including the exception to the incremental approach for intra-period tax allocation, exceptions to accounting for basis differences when there are ownership changes in foreign investments, and the exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. The ASU also simplifies current guidance in relation to franchise taxes that are partially based on income, transactions with a government that result in a step-up in tax basis of goodwill, separate financial statements of legal entities that are not subject to tax, and enacted changes in tax laws in interim periods. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020 and interim periods within those fiscal years. Early adoption is permitted. The impact of the implementation of this standard is still being determined by the Company.

On March 12, 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The ASU provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. It provides optional expedients and exceptions for applying GAAP to contract modifications, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The ASU is in effect for a limited time through December 31, 2022, to help stakeholders during the global market-wide reference rate transition period. The impact of the implementation of this standard is still being determined by the Company.