Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]
Business	Business The Company conducts its business in one segment – the manufacture of electric building wire, principally NM-B cable, for use primarily as interior wiring in homes, apartments, and manufactured housing, and THHN/THWN-2 cable and metal-clad and armored cable for use primarily as wiring in commercial and industrial buildings. The Company sells its products primarily through manufacturers’ representatives located throughout the United States and, to a lesser extent, through its own direct marketing efforts. The principal customers for Encore’s building wire are wholesale electrical distributors.
Basis of Presentation	Basis of Presentation The Company's financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition Our revenue is derived by fulfilling customer orders for the purchase of our products, which include electrical building wire and cable. We recognize revenue at the point in time that control of the ordered products is transferred to the customer, which is typically upon shipment to the customer from our manufacturing facilities and based on agreed upon shipping terms on the related purchase order. Amounts billed and due from our customers are classified as accounts receivables on the balance sheet and require payment on a short-term basis through standard payment terms. Revenue is measured as the amount of consideration we expect to receive in exchange for fulfilling product orders. The amount of consideration we expect to receive and revenue we recognize includes estimates for trade payment discounts and customer rebates which are estimated using historical experience and other relevant factors and is recorded within the same period that the revenue is recognized. We review and update these estimates regularly and the impact of any adjustments are recognized in the period the adjustments are identified. The adjustments resulting from updated estimates of trade payment discounts and customer rebates were not material.
Freight Expenses	Freight ExpensesThe Company classifies shipping and handling costs as a component of selling, general and administrative expenses.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Certain items are required to be measured at fair value on a recurring basis, primarily cash equivalents held in banks. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level hierarchy is followed for disclosure to show the extent and level of judgment used to estimate fair value measurements: Level 1 – Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date. Level 2 – Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the reporting date through correlation with market data, including quoted prices for similar assets and liabilities in active markets and quoted prices in markets that are not active. Level 2 also includes assets and liabilities that are valued using models or other pricing methodologies that do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument. Level 3 – Inputs used to measure fair value are unobservable inputs that are supported by little or no market activity and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.
Concentrations of Credit Risk and Accounts Receivable	Concentrations of Credit Risk and Accounts Receivable Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company places its cash and cash equivalents with high credit quality financial institutions. Accounts receivable represent amounts due from customers, primarily wholesale electrical distributors, related to the sale of the Company’s products. Such receivables are uncollateralized and are generally due from customers located throughout the United States. Encore has three customers, each of whom slightly exceeds 10% of the Company's total sales. The Company establishes an allowance for credit losses based upon the makeup of the current portfolio, past bad debt experience and current market conditions.
Concentrations of Credit Risk and Accounts Receivable	Concentrations of Credit Risk and Accounts Receivable Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company places its cash and cash equivalents with high credit quality financial institutions. Accounts receivable represent amounts due from customers, primarily wholesale electrical distributors, related to the sale of the Company’s products. Such receivables are uncollateralized and are generally due from customers located throughout the United States. Encore has three customers, each of whom slightly exceeds 10% of the Company's total sales. The Company establishes an allowance for credit losses based upon the makeup of the current portfolio, past bad debt experience and current market conditions.
Cash and Cash Equivalents	Cash and Cash EquivalentsThe Company considers all highly liquid instruments purchased with a maturity of three months or less to be cash equivalents.
Inventories	Inventories Inventories are stated at the lower of cost, using the LIFO method, or market. The Company evaluates the market value of its raw materials, work-in-process and finished goods inventory primarily based upon current raw material and finished goods prices at the end of each period.
Property, Plant, and Equipment	Property, Plant, and Equipment Property, plant and equipment is recorded at cost. Depreciation is recorded on a straight-line method over the estimated useful lives of the respective assets as follows: buildings and improvements, 3 to 39 years; machinery and equipment, 2 to 20 years; and furniture and fixtures, 5 to 20 years. Accelerated cost recovery methods are used for tax purposes. Repairs and maintenance costs are expensed as incurred.
Stock-Based Compensation	Stock-Based CompensationCompensation cost for all stock-based compensation expected to vest is measured at fair value on the date of grant and recognized over the related service period. The fair value of stock awards is determined based on the number of shares granted and the quoted price of Encore’s common stock, and the fair value of stock options and stock appreciation rights is estimated on the date of grant using the Black-Scholes model. Such value is recognized as expense over the service period, net of estimated forfeitures, on a straight-line basis. To the extent actual forfeitures or updated estimates of forfeitures differ from management’s current estimates, such amounts are recorded as a cumulative adjustment in the period estimates are revised.
Earnings Per Share	Earnings Per Share Earnings per common and common equivalent share is computed using the weighted average number of shares of common stock and common stock equivalents outstanding during each period. The dilutive effects of stock awards, which are common stock equivalents, are calculated using the treasury stock method.
Income Taxes	Income Taxes Income taxes are provided for based on the liability method, resulting in deferred income tax assets and liabilities arising due to temporary differences. Temporary differences are differences between the tax basis of assets and liabilities and their reported amounts in the financial statements that will result in taxable or deductible amounts in future years. The effect on deferred income tax assets and liabilities of a change in tax rates is recognized in income in the period the change in rate is enacted.
Comprehensive Income	Comprehensive IncomeComprehensive income is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources.
Recent Accounting Pronouncements	Recent Accounting Pronouncements The Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) is the sole source of authoritative U.S. GAAP, along with the Securities and Exchange Commission ("SEC") and Public Company Accounting Oversight Board (“PCAOB”) issued rules and regulations that apply only to SEC registrants. The FASB issues an Accounting Standard Update (“ASU”) to communicate changes to the codification. The Company considers the applicability and impact of all ASUs. The following are those ASUs that are relevant to the Company. In December 2019, the FASB issued ASU 2019-12, “Simplifying the Accounting for Income Taxes,” which simplifies the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. This ASU is effective for annual reporting periods beginning after December 15, 2020, and interim periods within those reporting periods. We adopted this new standard January 1, 2021, and it has had no material impact on the Company's financial statements or disclosures.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2021

The Company conducts its business in one segment – the manufacture of electric building wire, principally NM-B cable, for use primarily as interior wiring in homes, apartments, and manufactured housing, and THHN/THWN-2 cable and metal-clad and armored cable for use primarily as wiring in commercial and industrial buildings. The Company sells its products primarily through manufacturers’ representatives located throughout the United States and, to a lesser extent, through its own direct marketing efforts. The principal customers for Encore’s building wire are wholesale electrical distributors.

Basis of Presentation

The Company's financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”).

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Revenue Recognition

Our revenue is derived by fulfilling customer orders for the purchase of our products, which include electrical building wire and cable. We recognize revenue at the point in time that control of the ordered products is transferred to the customer, which is typically upon shipment to the customer from our manufacturing facilities and based on agreed upon shipping terms on the related purchase order. Amounts billed and due from our customers are classified as accounts receivables on the balance sheet and require payment on a short-term basis through standard payment terms.

Revenue is measured as the amount of consideration we expect to receive in exchange for fulfilling product orders. The amount of consideration we expect to receive and revenue we recognize includes estimates for trade payment discounts and customer rebates which are estimated using historical experience and other relevant factors and is recorded within the same period that the revenue is recognized. We review and update these estimates regularly and the impact of any adjustments are recognized in the period the adjustments are identified. The adjustments resulting from updated estimates of trade payment discounts and customer rebates were not material.

Freight Expenses

Freight ExpensesThe Company classifies shipping and handling costs as a component of selling, general and administrative expenses.

Fair Value of Financial Instruments

Certain items are required to be measured at fair value on a recurring basis, primarily cash equivalents held in banks. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level hierarchy is followed for disclosure to show the extent and level of judgment used to estimate fair value measurements:

Level 1 – Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date.

Level 2 – Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the reporting date through correlation with market data, including quoted prices for similar assets and liabilities in active markets and quoted prices in markets that are not active. Level 2 also includes assets and liabilities that are valued using models or other pricing methodologies that do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument.

Level 3 – Inputs used to measure fair value are unobservable inputs that are supported by little or no market activity and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.

Concentrations of Credit Risk and Accounts Receivable

Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company places its cash and cash equivalents with high credit quality financial institutions.

Accounts receivable represent amounts due from customers, primarily wholesale electrical distributors, related to the sale of the Company’s products. Such receivables are uncollateralized and are generally due from customers located throughout the United States. Encore has three customers, each of whom slightly exceeds 10% of the Company's total sales. The Company establishes an allowance for credit losses based upon the makeup of the current portfolio, past bad debt experience and current market conditions.

Concentrations of Credit Risk and Accounts Receivable

Cash and Cash Equivalents

Cash and Cash EquivalentsThe Company considers all highly liquid instruments purchased with a maturity of three months or less to be cash equivalents.

Inventories

Inventories are stated at the lower of cost, using the LIFO method, or market. The Company evaluates the market value of its raw materials, work-in-process and finished goods inventory primarily based upon current raw material and finished goods prices at the end of each period.

Property, Plant, and Equipment

Property, plant and equipment is recorded at cost. Depreciation is recorded on a straight-line method over the estimated useful lives of the respective assets as follows: buildings and improvements, 3 to 39 years; machinery and equipment, 2 to 20 years; and furniture and fixtures, 5 to 20 years. Accelerated cost recovery methods are used for tax purposes. Repairs and maintenance costs are expensed as incurred.

Stock-Based Compensation

Stock-Based CompensationCompensation cost for all stock-based compensation expected to vest is measured at fair value on the date of grant and recognized over the related service period. The fair value of stock awards is determined based on the number of shares granted and the quoted price of Encore’s common stock, and the fair value of stock options and stock appreciation rights is estimated on the date of grant using the Black-Scholes model. Such value is recognized as expense over the service period, net of estimated forfeitures, on a straight-line basis. To the extent actual forfeitures or updated estimates of forfeitures differ from management’s current estimates, such amounts are recorded as a cumulative adjustment in the period estimates are revised.

Earnings Per Share

Earnings per common and common equivalent share is computed using the weighted average number of shares of common stock and common stock equivalents outstanding during each period. The dilutive effects of stock awards, which are common stock equivalents, are calculated using the treasury stock method.

Income Taxes

Income taxes are provided for based on the liability method, resulting in deferred income tax assets and liabilities arising due to temporary differences. Temporary differences are differences between the tax basis of assets and liabilities and their reported amounts in the financial statements that will result in taxable or deductible amounts in future years. The effect on deferred income tax assets and liabilities of a change in tax rates is recognized in income in the period the change in rate is enacted.

Comprehensive Income

Comprehensive IncomeComprehensive income is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources.

Recent Accounting Pronouncements

The Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) is the sole source of authoritative U.S. GAAP, along with the Securities and Exchange Commission ("SEC") and Public Company Accounting Oversight Board (“PCAOB”) issued rules and regulations that apply only to SEC registrants. The FASB issues an Accounting Standard Update (“ASU”) to communicate changes to the codification. The Company considers the applicability and impact of all ASUs. The following are those ASUs that are relevant to the Company.

In December 2019, the FASB issued ASU 2019-12, “Simplifying the Accounting for Income Taxes,” which simplifies the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. This ASU is effective for annual reporting periods beginning after December 15, 2020, and interim periods within those reporting periods. We adopted this new standard January 1, 2021, and it has had no material impact on the Company's financial statements or disclosures.