Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of ConsolidationThe accompanying unaudited Consolidated Financial Statements include the accounts of NantHealth and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. These interim Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and, in the opinion of management, include all adjustments, which are normal and recurring in nature, necessary for a fair presentation of the Company's financial position and results of operations. In accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as issued by the Securities and Exchange Commission ("SEC"), these Consolidated Financial Statements do not include all of the information and disclosures required by GAAP for complete financial statements. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements for the fiscal year ended December 31, 2019. The results of operations of the entities disposed of are included in the unaudited Consolidated Financial Statements up to the date of disposal and, where appropriate, these operations have been reflected as discontinued operations. The accompanying Consolidated Balance Sheet as of December 31, 2019 has been derived from the audited Consolidated Financial Statements at that date. Assets and liabilities of the discontinued operations are presented separately in the asset and liability sections of the prior period balance sheet. Operating results for interim periods are not necessarily indicative of the results that may be expected for a full fiscal year.
Use of Estimates	Use of Estimates The preparation of Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported on the Consolidated Financial Statements and accompanying notes. Actual results may differ from those estimates.
Segment Reporting	Segment Reporting The chief operating decision maker for the Company is its Chief Executive Officer. The Chief Executive Officer reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. The Company has one business activity and there are no segment managers who are held accountable for operations, operating results, or plans for levels or components below the consolidated unit level. Accordingly, management has determined that the Company operates in one reportable segment.
Recently Adopted and Upcoming Accounting Pronouncements	Recently Adopted Accounting Pronouncements Effective January 1, 2020, the Company adopted ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Value Measurement (“ASU 2018-13”), which modifies the disclosure requirements on fair value measurements. The adoption of this guidance has no impact on the Consolidated Financial Statements. Effective January 1, 2020, the Company adopted, on a prospective basis, ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which aligns the requirement for capitalizing implementation costs incurred by a customer in a cloud clouding arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The adoption of this guidance did not have a material impact on the Consolidated Financial Statements. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, to simplify the accounting for income taxes. The new guidance eliminates certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. It also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. This ASU is effective for the Company's annual and interim periods beginning in January 1, 2021, and early adoption is permitted. The Company early adopted, on a prospective basis, this ASU in the first quarter of 2020. One of the provisions in this ASU is the change from the intraperiod tax allocation exception in ASC 740-20-45-7 to the incremental approach when there is a current period loss from continuing operations. ASU No. 2019-12 removed this exception, which impacted the Company's tax provision for (benefit from) income taxes between continuing operations and discontinued operations. Upcoming Accounting Standard Pronouncements In August 2020, the FASB issued ASU No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40). This update simplifies the accounting for convertible instruments by eliminating the cash conversion and beneficial conversion feature models which require separate accounting for embedded conversion features. This update also amends the guidance for the derivatives scope exception for contracts in an entity's own equity to reduce form-over-substance-based accounting conclusions and requires the application of the if-converted method for calculating diluted earnings per share. ASU No. 2020-06 is effective for fiscal periods beginning after December 15, 2023. Early adoption is permitted. The Company is currently evaluating the effects of this ASU. In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments, which changes how companies measure credit losses on most financial instruments measured at amortized cost, such as loans, receivables and held-to-maturity debt securities. Rather than generally recognizing credit losses when it is probable that the loss has been incurred, the revised guidance requires companies to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the amount of amortized cost that the Company expects to collect over the instrument's contractual life. ASU No. 2016-13 is effective for fiscal periods beginning after December 15, 2022 and must be adopted as a cumulative effect adjustment to retained earnings. Early adoption is permitted. The Company is still evaluating the effects of this ASU. Other recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force), the American Institute of Certified Public Accountants, and the SEC did not have, nor are believed by management to have, a material impact on the Company's present or future Consolidated Financial Statements.
Revenue from Contract with Customer	Revenue from Contracts with Customers Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. Revenue is recognized net of sales taxes collected from customers, which are subsequently remitted to governmental authorities. The Company acquired OpenNMS on July 22, 2020 (see Note 19). OpenNMS sells products and services directly to end-users and through resellers and generates revenue from the following sources: •Maintenance - Maintenance revenue includes technical support and maintenance on OpenNMS software during the contract term. Revenue is recognized over the maintenance or support term. The Company’s networking monitoring solutions typically consist of a term-based subscription to the OpenNMS software license and maintenance, which entitle customers to unspecified software updates and upgrades on a when-and-if-available basis. The Company has determined that its promises to transfer the software license and the related maintenance are not separately identifiable because the licensed software and the software updates and upgrades are highly interdependent and highly interrelated, working together to deliver a continuously updated networking monitoring solution. The Company therefore considers the software license and related maintenance obligations to represent a single, combined performance obligation with revenue recognized over the subscription period. •Professional services - Professional services revenue is generated from consulting services to help customers install, integrate and optimize OpenNMS, sponsored development, and training to assist customers deploy and use OpenNMS solutions. Sponsored development relates to professional services to build customer specific functionality, features, and enhancements into the OpenNMS open source platform. Revenue is recognized for most of our contracts over time as performance obligations are satisfied, as the Company is continuously transferring control to the customer. Typically, revenue is recognized over time using direct labor hours as a measure of progress. If any significant obligations to the customer remain post-delivery, typically involving obligations relating to acceptance by the customer, revenue recognition is deferred until such obligations have been fulfilled. Customers are generally billed as the Company satisfies its performance obligations. Billings under certain fixed-price contracts may be based upon the achievement of specified milestones. Management assesses whether contracts entered into at, or near, the same time, should be combined, based on evaluation of the commercial objectives of the contracts. Contracts with Multiple Promises for Goods and Services The Company engages in various contracts with promises for multiple goods and services. In certain contracts, the Company recognizes software license, technical support, maintenance, consulting services, sponsored development services, and training as distinct performance obligations. Standalone selling prices (“SSP”) are required to be allocated and revenue recognized for each distinct performance obligation within each contract. Judgment is required to determine the SSP for each distinct performance obligation. The SSP for each performance obligation is determined by considering contracts in which the good or service is sold separately and other factors, including market conditions and the Company’s experience selling similar goods and services, as well as costs and margins achieved. In some cases, to estimate the SSP, the Company first estimates the selling price of each performance obligation for which an SSP is observable and then estimates the SSP of the remaining performance obligation as the residual contractual amount. Generally, consulting and sponsored development professional services do not involve significant integration or customization of the OpenNMS software. As such, consulting and sponsored development are considered distinct performance obligations. The Company has reseller arrangements with gross revenue presentation due to the Company’s control of goods and services before transfer to the customer. The Company assesses control in terms of relevant indicators of performance and pricing risk, such as which party negotiates pricing with the end customer and which party is ultimately responsible for fulfilling services, transferring goods and services, and ensuring support.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2020

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of ConsolidationThe accompanying unaudited Consolidated Financial Statements include the accounts of NantHealth and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. These interim Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and, in the opinion of management, include all adjustments, which are normal and recurring in nature, necessary for a fair presentation of the Company's financial position and results of operations. In accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as issued by the Securities and Exchange Commission ("SEC"), these Consolidated Financial Statements do not include all of the information and disclosures required by GAAP for complete financial statements. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements for the fiscal year ended December 31, 2019. The results of operations of the entities disposed of are included in the unaudited Consolidated Financial Statements up to the date of disposal and, where appropriate, these operations have been reflected as discontinued operations. The accompanying Consolidated Balance Sheet as of December 31, 2019 has been derived from the audited Consolidated Financial Statements at that date. Assets and liabilities of the discontinued operations are presented separately in the asset and liability sections of the prior period balance sheet. Operating results for interim periods are not necessarily indicative of the results that may be expected for a full fiscal year.

Use of Estimates

The preparation of Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported on the Consolidated Financial Statements and accompanying notes. Actual results may differ from those estimates.

Segment Reporting

The chief operating decision maker for the Company is its Chief Executive Officer. The Chief Executive Officer reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. The Company has one business activity and there are no segment managers who are held accountable for operations, operating results, or plans for levels or components below the consolidated unit level. Accordingly, management has determined that the Company operates in one reportable segment.

Recently Adopted and Upcoming Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Effective January 1, 2020, the Company adopted ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Value Measurement (“ASU 2018-13”), which modifies the disclosure requirements on fair value measurements. The adoption of this guidance has no impact on the Consolidated Financial Statements.

Effective January 1, 2020, the Company adopted, on a prospective basis, ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which aligns the requirement for capitalizing implementation costs incurred by a customer in a cloud clouding arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, to simplify the accounting for income taxes. The new guidance eliminates certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. It also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. This ASU is effective for the Company's annual and interim periods beginning in January 1, 2021, and early adoption is permitted. The Company early adopted, on a prospective basis, this ASU in the first quarter of 2020. One of the provisions in this ASU is the change from the intraperiod tax allocation exception in ASC 740-20-45-7 to the incremental approach when there is a current period loss from continuing operations. ASU No. 2019-12 removed this exception, which impacted the Company's tax provision for (benefit from) income taxes between continuing operations and discontinued operations.

Upcoming Accounting Standard Pronouncements

In August 2020, the FASB issued ASU No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40). This update simplifies the accounting for convertible instruments by eliminating the cash conversion and beneficial conversion feature models which require separate accounting for embedded conversion features. This update also amends the guidance for the derivatives scope exception for contracts in an entity's own equity to reduce form-over-substance-based accounting conclusions and requires the application of the if-converted method for calculating diluted earnings per share. ASU No. 2020-06 is effective for fiscal periods beginning after December 15, 2023. Early adoption is permitted. The Company is currently evaluating the effects of this ASU.

In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments, which changes how companies measure credit losses on most financial instruments measured at amortized cost, such as loans, receivables and held-to-maturity debt securities. Rather than generally recognizing credit losses when it is probable that the loss has been incurred, the revised guidance requires companies to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the amount of amortized cost that the Company expects to collect over the instrument's contractual life. ASU No. 2016-13 is effective for fiscal periods beginning after December 15, 2022 and must be adopted as a cumulative effect adjustment to retained earnings. Early adoption is permitted. The Company is still evaluating the effects of this ASU.

Other recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force), the American Institute of Certified Public Accountants, and the SEC did not have, nor are believed by management to have, a material impact on the Company's present or future Consolidated Financial Statements.

Revenue from Contract with Customer

Revenue from Contracts with Customers

Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. Revenue is recognized net of sales taxes collected from customers, which are subsequently remitted to governmental authorities.

The Company acquired OpenNMS on July 22, 2020 (see Note 19). OpenNMS sells products and services directly to end-users and through resellers and generates revenue from the following sources:

•Maintenance - Maintenance revenue includes technical support and maintenance on OpenNMS software during the contract term. Revenue is recognized over the maintenance or support term.

The Company’s networking monitoring solutions typically consist of a term-based subscription to the OpenNMS software license and maintenance, which entitle customers to unspecified software updates and upgrades on a when-and-if-available basis. The Company has determined that its promises to transfer the software license and the related maintenance are not separately identifiable because the licensed software and the software updates and upgrades are highly interdependent and highly interrelated, working together to deliver a continuously updated networking monitoring solution. The Company therefore considers the software license and related maintenance obligations to represent a single, combined performance obligation with revenue recognized over the subscription period.

•Professional services - Professional services revenue is generated from consulting services to help customers install, integrate and optimize OpenNMS, sponsored development, and training to assist customers deploy and use OpenNMS solutions. Sponsored development relates to professional services to build customer specific functionality, features, and enhancements into the OpenNMS open source platform.

Revenue is recognized for most of our contracts over time as performance obligations are satisfied, as the Company is continuously transferring control to the customer. Typically, revenue is recognized over time using direct labor hours as a measure of progress. If any significant obligations to the customer remain post-delivery, typically involving obligations relating to acceptance by the customer, revenue recognition is deferred until such obligations have been fulfilled.

Customers are generally billed as the Company satisfies its performance obligations. Billings under certain fixed-price contracts may be based upon the achievement of specified milestones.

Management assesses whether contracts entered into at, or near, the same time, should be combined, based on evaluation of the commercial objectives of the contracts.

Contracts with Multiple Promises for Goods and Services

The Company engages in various contracts with promises for multiple goods and services.

In certain contracts, the Company recognizes software license, technical support, maintenance, consulting services, sponsored development services, and training as distinct performance obligations.

Standalone selling prices (“SSP”) are required to be allocated and revenue recognized for each distinct performance obligation within each contract. Judgment is required to determine the SSP for each distinct performance obligation. The SSP for each performance obligation is determined by considering contracts in which the good or service is sold separately and other factors, including market conditions and the Company’s experience selling similar goods and services, as well as costs and margins achieved. In some cases, to estimate the SSP, the Company first estimates the selling price of each performance obligation for which an SSP is observable and then estimates the SSP of the remaining performance obligation as the residual contractual amount.

Generally, consulting and sponsored development professional services do not involve significant integration or customization of the OpenNMS software. As such, consulting and sponsored development are considered distinct performance obligations.

The Company has reseller arrangements with gross revenue presentation due to the Company’s control of goods and services before transfer to the customer. The Company assesses control in terms of relevant indicators of performance and pricing risk, such as which party negotiates pricing with the end customer and which party is ultimately responsible for fulfilling services, transferring goods and services, and ensuring support.