Business, Organization, and Liquidity	12 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Accounting [Text Block]	1. Business, Organization, and Liquidity Business and Organization Tel-Instrument Electronics Corp. (“Tel” or the “Company”) has been in business since 1947. The Company is a leading designer and manufacturer of avionics test and measurement instruments for the global, commercial air transport, general aviation, and government/military defense markets. Tel provides instruments to test, measure, calibrate, and repair a wide range of airborne navigation and communication equipment. The Company sells its equipment in both domestic and international markets. Tel continues to develop new products in anticipation of customers’ needs and to maintain its strong market position. Its development of multi-function testers has made it easier for customers to perform ramp tests with less operator training, fewer test sets, and lower product support costs. The Company has become a major manufacturer and supplier of Identification Friend or Foe (“IFF”) flight line test equipment over the last few years. Liquidity As shown on the balance sheet as of March 31, 2019, the Company had recorded accrued legal damages to date of $5.3 million, including interest, as a result of the jury verdict associated with the Aeroflex litigation. The Company’s line of credit agreement was expiring on May 31, 2019. During June 2019, Bank of America agreed to extend the Company’s line of credit until March 31, 2020 (see Note 22). We had no commitment from any party to provide additional working capital and there was no assurance that any funding would be available as required, or if available, that its terms will be favorable or acceptable to the Company. These factors raised substantial doubt about the Company’s ability to continue as a going concern within one year of the date that the financial statements were issued last year. The second half of fiscal year 2019 showed a strong turnaround in our business. The Company had net income of $1,140,521 for the second half of the fiscal year ended March 31, 2019. For the year ended March 31, 2020, the Company had income before taxes of $2,087,210. This increase is the mainly the result of increased international business for our Mode 5 test sets, including our T-47/M5, which has received AIMS (Air Traffic Control Radar Beacon System, Identification Friend or Foe, Mark XII/Mark XIIA, Systems) approval, increased shipments of our CRAFT products, especially for Lockheed Martin for the Joint Strike Fighter (“JSF”) program, and the T-4530i and the TS-4530A. As a result, at March 31, 2020, the Company had a cash balances of $5,134,739, including $2,008,544 in restricted cash to support the appeal bond. The Company also had working capital of $1,776,176 at March 31, 2020, which was negatively impacted by $5,657,549 in accrued legal damages. In March 2020, Bank of America agreed to extend the line of credit from March 31, 2020 to January 31, 2021. Monthly payments will be interest only (see Note 10 to the consolidated financial statements). On May 4, 2020, the Company received a Paycheck Protection Program Loan in the amount of $772,577 (see Note 22 to the consolidated financial statements). The Company is very optimistic about the prospects of its appeal for a judgment as a matter of law. The Company was hoping for a decision from the court this calendar year, but this timing will likely be delayed due to the three month COVID-19 related shutdown of the Kansas court system. As such, the appeal process is expected to take at least another year to complete unless a settlement can be reached. The Company has the ability to settle this case at its sole discretion by withdrawing the appeal and paying the judgment plus interest amount. Moving forward, the Company believes that our expected cash flows from operations and current cash balances will be sufficient to operate in the normal course of business for next 12 months from the issuance date of these financial statements, including any payments for settlement of the litigation. Impact of the COVID-19 Coronavirus In December 2019, a novel strain of coronavirus, which causes the disease known as COVID-19, was reported to have surfaced in Wuhan, China. Since then, COVID-19 coronavirus has spread globally. In March 2020, the World Health Organization declared the COVID-19 outbreak a pandemic and the U.S. government imposed travel restrictions on travel between the United States, Europe and certain other countries. The impact of this pandemic has been, and will likely continue to be, extensive in many aspects of society, which has resulted, and will likely continue to result, in significant disruptions to the global economy as well as businesses and capital markets around the world. In response to public health directives and orders and to help minimize the risk of the virus to employees, the Company has taken precautionary measures, including implementing work-from-home policies for certain employees. The impact of the virus, including work-from-home policies, may negatively impact productivity, disrupt the Company's business, and delay certain projects, the magnitude of which will depend, in part, on the length and severity of the restrictions and other limitations on the Company's ability to conduct its business in the ordinary course. Other impacts to the Company's business may include temporary closures of its suppliers and disruptions or restrictions on its employees' ability to travel. Any prolonged material disruption to the Company's employees or suppliers could adversely impact the Company's financial condition and results of operations, including its ability to obtain financing.

1. Business, Organization, and Liquidity

Business and Organization

Tel-Instrument Electronics Corp. (“Tel” or the “Company”) has been in business since 1947. The Company is a leading designer and manufacturer of avionics test and measurement instruments for the global, commercial air transport, general aviation, and government/military defense markets. Tel provides instruments to test, measure, calibrate, and repair a wide range of airborne navigation and communication equipment. The Company sells its equipment in both domestic and international markets. Tel continues to develop new products in anticipation of customers’ needs and to maintain its strong market position. Its development of multi-function testers has made it easier for customers to perform ramp tests with less operator training, fewer test sets, and lower product support costs. The Company has become a major manufacturer and supplier of Identification Friend or Foe (“IFF”) flight line test equipment over the last few years.

Liquidity

As shown on the balance sheet as of March 31, 2019, the Company had recorded accrued legal damages to date of $5.3 million, including interest, as a result of the jury verdict associated with the Aeroflex litigation. The Company’s line of credit agreement was expiring on May 31, 2019. During June 2019, Bank of America agreed to extend the Company’s line of credit until March 31, 2020 (see Note 22). We had no commitment from any party to provide additional working capital and there was no assurance that any funding would be available as required, or if available, that its terms will be favorable or acceptable to the Company. These factors raised substantial doubt about the Company’s ability to continue as a going concern within one year of the date that the financial statements were issued last year.

The second half of fiscal year 2019 showed a strong turnaround in our business. The Company had net income of $1,140,521 for the second half of the fiscal year ended March 31, 2019. For the year ended March 31, 2020, the Company had income before taxes of $2,087,210.

This increase is the mainly the result of increased international business for our Mode 5 test sets, including our T-47/M5, which has received AIMS (Air Traffic Control Radar Beacon System, Identification Friend or Foe, Mark XII/Mark XIIA, Systems) approval, increased shipments of our CRAFT products, especially for Lockheed Martin for the Joint Strike Fighter (“JSF”) program, and the T-4530i and the TS-4530A.

As a result, at March 31, 2020, the Company had a cash balances of $5,134,739, including $2,008,544 in restricted cash to support the appeal bond. The Company also had working capital of $1,776,176 at March 31, 2020, which was negatively impacted by $5,657,549 in accrued legal damages.

In March 2020, Bank of America agreed to extend the line of credit from March 31, 2020 to January 31, 2021. Monthly payments will be interest only (see Note 10 to the consolidated financial statements). On May 4, 2020, the Company received a Paycheck Protection Program Loan in the amount of $772,577 (see Note 22 to the consolidated financial statements).

The Company is very optimistic about the prospects of its appeal for a judgment as a matter of law. The Company was hoping for a decision from the court this calendar year, but this timing will likely be delayed due to the three month COVID-19 related shutdown of the Kansas court system. As such, the appeal process is expected to take at least another year to complete unless a settlement can be reached.

The Company has the ability to settle this case at its sole discretion by withdrawing the appeal and paying the judgment plus interest amount.

Moving forward, the Company believes that our expected cash flows from operations and current cash balances will be sufficient to operate in the normal course of business for next 12 months from the issuance date of these financial statements, including any payments for settlement of the litigation.

Impact of the COVID-19 Coronavirus

In December 2019, a novel strain of coronavirus, which causes the disease known as COVID-19, was reported to have surfaced in Wuhan, China. Since then, COVID-19 coronavirus has spread globally. In March 2020, the World Health Organization declared the COVID-19 outbreak a pandemic and the U.S. government imposed travel restrictions on travel between the United States, Europe and certain other countries. The impact of this pandemic has been, and will likely continue to be, extensive in many aspects of society, which has resulted, and will likely continue to result, in significant disruptions to the global economy as well as businesses and capital markets around the world.

In response to public health directives and orders and to help minimize the risk of the virus to employees, the Company has taken precautionary measures, including implementing work-from-home policies for certain employees. The impact of the virus, including work-from-home policies, may negatively impact productivity, disrupt the Company's business, and delay certain projects, the magnitude of which will depend, in part, on the length and severity of the restrictions and other limitations on the Company's ability to conduct its business in the ordinary course. Other impacts to the Company's business may include temporary closures of its suppliers and disruptions or restrictions on its employees' ability to travel. Any prolonged material disruption to the Company's employees or suppliers could adversely impact the Company's financial condition and results of operations, including its ability to obtain financing.