Organization and Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Summary of Significant Accounting Policies	1. Organization and Summary of Significant Accounting Policies Organization Techpoint, Inc. and its wholly-owned subsidiaries (the “Company”) was originally incorporated in California in April 2012 and reincorporated into Delaware in July 2017. The Company is a fabless semiconductor company that designs, markets and sells mixed-signal integrated circuits for multiple video applications in the security surveillance and automotive markets. The Company is headquartered in San Jose, California. Initial Public Offering On September 29, 2017, the Company completed its initial public offering (“IPO”) of Japanese depositary shares (“JDS”). In connection with the IPO, the Company sold 1,520,000 JDSs, represented by 1,520,000 shares of the Company’s common stock at a price to the public of $5.85 per share for net proceeds of $8.1 million, after deducting underwriting discounts and commissions of $0.7 million. Additionally, offering costs incurred by the Company totaled $3.0 million. Proceeds from the IPO were received and maintained in Japanese yen as of September 30, 2017, and were subject to foreign currency revaluation. Prior to the closing of the Company’s IPO, all outstanding shares of its preferred stock converted to common stock on a one-to-one basis. On October 25, 2017, the managing underwriter of our IPO elected to purchase an additional 228,000 shares of JDSs, represented by 228,000 shares of common stock, pursuant to the underwriters’ over-allotment option. We subsequently completed the sale at the IPO price of $5.85 per share and received net proceeds of $1.2 million, after deducting underwriter discounts and commissions of $0.1 million. The accompanying unaudited condensed financial statements, including share and per share amounts, do not give effect to the exercise of the over-allotment option by the underwriters in the IPO. Basis of Consolidation and Significant Accounting Policies The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, and have been prepared in conformity with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”). All intercompany balances and transactions have been eliminated. The functional currency of each of the Company’s subsidiaries is the U.S. dollar. Foreign currency gains or losses are recorded as other income (expense) in the Consolidated Statements of Operations. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2016 contained in our prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933 with the SEC on September 20, 2017. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which only include normal recurring adjustments, necessary to present fairly the Company’s financial position, results of operations and cash flows for the interim periods and are not necessarily indicative of the results to be expected for the full fiscal year or for any other future annual or interim periods. Use of Management’s Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenue and expenses during the reporting period. Significant estimates included in the consolidated financial statements include inventory valuation, valuation allowance for recorded deferred tax assets, and stock based compensation. These estimates are based upon information available as of the date of the consolidated financial statements. Actual results could differ materially from those estimates. Concentration of Customer and Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and trade receivables. Risks associated with cash and cash equivalents are mitigated by banking with creditworthy institutions. The Company generally requires advance payments from customers. The Company also performs credit evaluations of its customers and provides credit to certain customers in the normal course of business. The Company has not incurred bad debt write-offs during any of the periods presented. For the nine months ended September 30, 2017 and 2016, one customer, a distributor, accounted for 73% and 86% of revenue, respectively. Additionally, for the nine months ended September 30, 2017 and 2016, one of our end-customers accounted for 60% and 65% of revenue, respectively, which primarily occurred through this distributor. No other customers accounted for 10% or greater of our revenue in the nine months ended September 30, 2017 or 2016, respectively. Recently Adopted Accounting Pronouncements Stock Compensation Guidance. In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09 (ASC Topic 718), Stock Compensation — Improvements to Employee Share-Based Payment Accounting, which simplifies the accounting for share based payment transactions, including the income tax consequences, forfeitures, and statutory tax withholding requirements, as well as classification on the statement of cash flows. ASU 2016-09 is effective for the Company beginning the first quarter of fiscal 2017. The Company adopted the guidance in the first quarter of fiscal 2017, which resulted in no material impacts on its financial position, results of operations, or cash flows, and expects the primary impact of this standard to be the income tax effects of awards recognized in the income statement when the awards are vested or settled. The potential tax impacts remain unknown until the award vest or settlement date. Inventory Measurement Guidance. In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, amending ASC 330. Upon adoption, this topic supersedes the existing guidance under ASC 330 and aims to simplify the subsequent measurement of inventory. Currently, inventory can be measured at the lower of cost or market, which could result in several potential outcomes, as market could be replacement cost, net realizable value or net realizable value less an approximately normal profit margin. The major amendments would be as follows: 1. Inventory should be measured at the lower of cost or net realizable value. 2. Net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. 3. The amendment does not apply to inventory measured under LIFO or the retail inventory method. 4. The amendment does apply to all other inventory, which includes inventory measured via FIFO or average cost. ASU 2015-11 became effective for periods beginning after December 15, 2016 (including interim reporting periods within those fiscal years), or the first quarter of fiscal 2017. The Company adopted this guidance in the first quarter of fiscal 2017, which resulted in no material impact on its consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted Lease Guidance. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 requires lessees to recognize all leases with terms in excess of one year on their balance sheet as a right-of-use asset and a lease liability at the commencement date. The new standard also simplifies the accounting for sale and leaseback transactions. The amendments in this update are effective for annual periods beginning after December 15, 2018, and interim periods therein and must be adopted using a modified retrospective method for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Early adoption is permitted. The Company does not expect that the adoption of this amendment will have a material impact on its consolidated financial statements. Revenue Recognition Guidance. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, creating ASC Topic 606. Upon adoption, this topic supersedes the existing guidance under ASC 605 and aims to simplify the number of requirements to follow for revenue recognition and make revenue recognition more comparable across various entities, industries, jurisdictions and capital markets. There are 5 core principles: 1. Identify the contract(s) with a customer. 2. Identify the performance obligations in the contract. 3. Determine the transaction price. 4. Allocate the transaction price to performance obligations in the contract. 5. Recognize revenue when (or as) the entity satisfies a performance obligation. Additional considerations under this update include: accounting for costs to obtain or fulfill a contract with a customer and additional quantitative and qualitative disclosures. ASU 2014-09 will become effective for periods beginning after December 15, 2017 (including interim reporting periods within those periods), or the first quarter 2018, and allows for retrospective or modified retrospective application. The Company has preliminarily completed its evaluation of the effect of the standard on the Company’s financial statements. The Company’s evaluation focused on the review of significant customer contracts as well as business processes, systems and controls required to support appropriate recognition and disclosure under the new standard. Based on the Company’s preliminary evaluation, the Company has not yet identified any expected material impact on the financial statements from the review of its existing customer contracts. The Company will evaluate new contracts with customers as they are obtained and will adopt the standard using the modified retrospective approach in the first quarter of 2018.

1. Organization and Summary of Significant Accounting Policies

Organization

Techpoint, Inc. and its wholly-owned subsidiaries (the “Company”) was originally incorporated in California in April 2012 and reincorporated into Delaware in July 2017. The Company is a fabless semiconductor company that designs, markets and sells mixed-signal integrated circuits for multiple video applications in the security surveillance and automotive markets. The Company is headquartered in San Jose, California.

Initial Public Offering

On September 29, 2017, the Company completed its initial public offering (“IPO”) of Japanese depositary shares (“JDS”). In connection with the IPO, the Company sold 1,520,000 JDSs, represented by 1,520,000 shares of the Company’s common stock at a price to the public of $5.85 per share for net proceeds of $8.1 million, after deducting underwriting discounts and commissions of $0.7 million. Additionally, offering costs incurred by the Company totaled $3.0 million. Proceeds from the IPO were received and maintained in Japanese yen as of September 30, 2017, and were subject to foreign currency revaluation. Prior to the closing of the Company’s IPO, all outstanding shares of its preferred stock converted to common stock on a one-to-one basis.

On October 25, 2017, the managing underwriter of our IPO elected to purchase an additional 228,000 shares of JDSs, represented by 228,000 shares of common stock, pursuant to the underwriters’ over-allotment option. We subsequently completed the sale at the IPO price of $5.85 per share and received net proceeds of $1.2 million, after deducting underwriter discounts and commissions of $0.1 million. The accompanying unaudited condensed financial statements, including share and per share amounts, do not give effect to the exercise of the over-allotment option by the underwriters in the IPO.

Basis of Consolidation and Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, and have been prepared in conformity with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”). All intercompany balances and transactions have been eliminated. The functional currency of each of the Company’s subsidiaries is the U.S. dollar. Foreign currency gains or losses are recorded as other income (expense) in the Consolidated Statements of Operations.

The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2016 contained in our prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933 with the SEC on September 20, 2017.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which only include normal recurring adjustments, necessary to present fairly the Company’s financial position, results of operations and cash flows for the interim periods and are not necessarily indicative of the results to be expected for the full fiscal year or for any other future annual or interim periods.

Use of Management’s Estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenue and expenses during the reporting period. Significant estimates included in the consolidated financial statements include inventory valuation, valuation allowance for recorded deferred tax assets, and stock based compensation. These estimates are based upon information available as of the date of the consolidated financial statements. Actual results could differ materially from those estimates.

Concentration of Customer and Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and trade receivables. Risks associated with cash and cash equivalents are mitigated by banking with creditworthy institutions. The Company generally requires advance payments from customers. The Company also performs credit evaluations of its customers and provides credit to certain customers in the normal course of business. The Company has not incurred bad debt write-offs during any of the periods presented.

For the nine months ended September 30, 2017 and 2016, one customer, a distributor, accounted for 73% and 86% of revenue, respectively. Additionally, for the nine months ended September 30, 2017 and 2016, one of our end-customers accounted for 60% and 65% of revenue, respectively, which primarily occurred through this distributor. No other customers accounted for 10% or greater of our revenue in the nine months ended September 30, 2017 or 2016, respectively.

Recently Adopted Accounting Pronouncements

Stock Compensation Guidance. In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09 (ASC Topic 718), Stock Compensation — Improvements to Employee Share-Based Payment Accounting, which simplifies the accounting for share based payment transactions, including the income tax consequences, forfeitures, and statutory tax withholding requirements, as well as classification on the statement of cash flows. ASU 2016-09 is effective for the Company beginning the first quarter of fiscal 2017. The Company adopted the guidance in the first quarter of fiscal 2017, which resulted in no material impacts on its financial position, results of operations, or cash flows, and expects the primary impact of this standard to be the income tax effects of awards recognized in the income statement when the awards are vested or settled. The potential tax impacts remain unknown until the award vest or settlement date.

Inventory Measurement Guidance. In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, amending ASC 330. Upon adoption, this topic supersedes the existing guidance under ASC 330 and aims to simplify the subsequent measurement of inventory. Currently, inventory can be measured at the lower of cost or market, which could result in several potential outcomes, as market could be replacement cost, net realizable value or net realizable value less an approximately normal profit margin. The major amendments would be as follows: 1. Inventory should be measured at the lower of cost or net realizable value. 2. Net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. 3. The amendment does not apply to inventory measured under LIFO or the retail inventory method. 4. The amendment does apply to all other inventory, which includes inventory measured via FIFO or average cost. ASU 2015-11 became effective for periods beginning after December 15, 2016 (including interim reporting periods within those fiscal years), or the first quarter of fiscal 2017. The Company adopted this guidance in the first quarter of fiscal 2017, which resulted in no material impact on its consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

Lease Guidance. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 requires lessees to recognize all leases with terms in excess of one year on their balance sheet as a right-of-use asset and a lease liability at the commencement date. The new standard also simplifies the accounting for sale and leaseback transactions. The amendments in this update are effective for annual periods beginning after December 15, 2018, and interim periods therein and must be adopted using a modified retrospective method for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Early adoption is permitted. The Company does not expect that the adoption of this amendment will have a material impact on its consolidated financial statements.

Revenue Recognition Guidance. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, creating ASC Topic 606. Upon adoption, this topic supersedes the existing guidance under ASC 605 and aims to simplify the number of requirements to follow for revenue recognition and make revenue recognition more comparable across various entities, industries, jurisdictions and capital markets. There are 5 core principles: 1. Identify the contract(s) with a customer. 2. Identify the performance obligations in the contract. 3. Determine the transaction price. 4. Allocate the transaction price to performance obligations in the contract. 5. Recognize revenue when (or as) the entity satisfies a performance obligation. Additional considerations under this update include: accounting for costs to obtain or fulfill a contract with a customer and additional quantitative and qualitative disclosures. ASU 2014-09 will become effective for periods beginning after December 15, 2017 (including interim reporting periods within those periods), or the first quarter 2018, and allows for retrospective or modified retrospective application.

The Company has preliminarily completed its evaluation of the effect of the standard on the Company’s financial statements. The Company’s evaluation focused on the review of significant customer contracts as well as business processes, systems and controls required to support appropriate recognition and disclosure under the new standard. Based on the Company’s preliminary evaluation, the Company has not yet identified any expected material impact on the financial statements from the review of its existing customer contracts. The Company will evaluate new contracts with customers as they are obtained and will adopt the standard using the modified retrospective approach in the first quarter of 2018.