SigmaTron International (SGMA) 10-Q 11 Mar 21 2021 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Jan. 31, 2021	Mar. 08, 2021
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jan. 31, 2021
Document Transition Report	false
Entity File Number	0-23248
Entity Registrant Name	SIGMATRON INTERNATIONAL INC
Entity Incorporation State Country Code	DE
Entity Tax Identification Number	36-3918470
Entity Address Address Line 1	2201 Landmeier Road
Entity Address City Or Town	Elk Grove Village
Entity Address State Or Province	IL
Entity Address Postal Zip Code	60007
City Area Code	847
Local Phone Number	956-8000
Title of 12b Security	Common Stock $0.01 par value per share
Trading Symbol	sgma
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		4,257,508
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--04-30
Document Fiscal Year Focus	2021
Amendment Flag	false
Entity Central Index Key	0000915358

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($)	Jan. 31, 2021	Apr. 30, 2020
Current assets:
Cash and cash equivalents	$ 2,744,679	$ 6,779,445
Accounts receivable, less allowance for doubtful accounts of $395,969 and $727,252 at January 31, 2021 and April 30, 2020, respectively	26,289,585	30,804,976
Inventories, net	86,050,438	87,179,369
Prepaid expenses and other assets	1,107,079	1,510,943
Refundable and prepaid income taxes	947,830	1,699,970
Other receivables	8,724,894	2,642,094
Total current assets	125,864,505	130,616,797
Property, machinery and equipment, net	33,312,831	33,935,760
Intangible assets, net	2,085,137	2,350,949
Deferred income taxes	284,434	284,435
Other assets	8,387,575	8,891,090
Total other long-term assets	10,757,146	11,526,474
Total assets	169,934,482	176,079,031
Current liabilities:
Trade accounts payable	48,645,860	55,770,953
Accrued wages	5,321,315	4,206,825
Accrued expenses	2,867,481	2,670,504
Income taxes payable	453,558	469,143
Current portion of long-term debt	6,596,970	2,878,160
Current portion of finance lease obligations	1,651,807	1,902,295
Current portion of operating lease obligations	1,944,321	2,150,161
Total current liabilities	67,481,312	70,048,041
Long-term debt, less current portion	35,169,381	38,537,064
Income taxes payable	404,975	452,619
Finance lease obligations, less current portion	1,353,434	1,884,722
Operating lease obligations, less current portion	5,065,611	5,281,811
Other long-term liabilities	1,434,054	810,769
Deferred income taxes	141,515	188,206
Total long-term liabilities	43,568,970	47,155,191
Total liabilities	111,050,282	117,203,232
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value; 500,000 shares authorized, none issued or outstanding
Common stock, $.01 par value; 12,000,000 shares authorized, 4,257,508 and 4,242,508 shares issued and outstanding at January 31, 2021 and April 30, 2020, respectively	42,365	42,265
Capital in excess of par value	23,652,354	23,619,513
Retained earnings	35,189,481	35,214,021
Total stockholders' equity	58,884,200	58,875,799
Total liabilities and stockholders' equity	$ 169,934,482	$ 176,079,031

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Jan. 31, 2021	Apr. 30, 2020
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 395,969	$ 727,252
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	12,000,000	12,000,000
Common stock, shares issued	4,257,508	4,242,508
Common stock, shares outstanding	4,257,508	4,242,508

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Condensed Consolidated Statements Of Operations [Abstract]
Net sales	$ 71,531,348	$ 67,407,268	$ 201,674,728	$ 216,272,561
Cost of products sold	65,618,649	61,885,491	184,730,296	196,660,966
Gross profit	5,912,699	5,521,777	16,944,432	19,611,595
Selling and administrative expenses	5,212,629	5,469,654	15,693,893	16,997,268
Operating income	700,070	52,123	1,250,539	2,614,327
Other expense (income)	189,341	(29,944)	144,632	(107,169)
Interest expense	287,371	401,837	934,248	1,455,837
Income (loss) before income tax expense	223,358	(319,770)	171,659	1,265,659
Income tax (benefit) expense	(25,910)	(102,731)	196,199	460,490
Net income (loss)	$ 249,268	$ (217,039)	$ (24,540)	$ 805,169
Earnings (loss) per share - basic	$ 0.06	$ (0.05)	$ (0.01)	$ 0.19
Earnings (loss) per share - diluted	$ 0.06	$ (0.05)	$ (0.01)	$ 0.19
Weighted average shares of common stock outstanding - Basic	4,257,508	4,242,508	4,255,334	4,242,300
Weighted average shares of common stock outstanding - Diluted	4,310,290	4,242,508	4,255,334	4,260,022

Condensed Consolidated Statem_2

Condensed Consolidated Statements Of Changes In Stockholders' Equity - USD ($)	Preferred Stock [Member]Cumulative-Effect Adjustment For The Adoption Of Topic 842 [Member]	Preferred Stock [Member]	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]Cumulative-Effect Adjustment For The Adoption Of Topic 842 [Member]	Retained Earnings [Member]	Cumulative-Effect Adjustment For The Adoption Of Topic 842 [Member]	Total
Balance at Apr. 30, 2019			$ 42,146	$ 23,474,379	$ 5	$ 34,770,924	$ 5	$ 58,287,449
Net (loss) income						361,025		361,025
Balance at Jul. 31, 2019			42,146	23,474,379		35,131,944		58,648,469
Balance at Apr. 30, 2019			42,146	23,474,379	$ 5	34,770,924	$ 5	58,287,449
Net (loss) income								805,169
Balance at Jan. 31, 2020			42,190	23,585,325		35,576,088		59,203,603
Balance at Jul. 31, 2019			42,146	23,474,379		35,131,944		58,648,469
Net (loss) income						661,183		661,183
Balance at Oct. 31, 2019			42,146	23,474,379		35,793,127		59,309,652
Recognition of stock-based compensation				90,432				90,432
Restricted stock awards			44	20,514				20,558
Net (loss) income						(217,039)		(217,039)
Balance at Jan. 31, 2020			42,190	23,585,325		35,576,088		59,203,603
Balance at Apr. 30, 2020			42,265	23,619,513		35,214,021		58,875,799
Restricted stock awards			31	15,198				15,229
Net (loss) income						(900,666)		(900,666)
Balance at Jul. 31, 2020			42,296	23,634,711		34,313,355		57,990,362
Balance at Apr. 30, 2020			42,265	23,619,513		35,214,021		58,875,799
Net (loss) income								(24,540)
Balance at Jan. 31, 2021			42,365	23,652,354		35,189,481		58,884,200
Balance at Jul. 31, 2020			42,296	23,634,711		34,313,355		57,990,362
Net (loss) income						626,858		626,858
Balance at Oct. 31, 2020			42,296	23,634,711		34,940,213		58,617,220
Restricted stock awards			69	17,643				17,712
Net (loss) income						249,268		249,268
Balance at Jan. 31, 2021			$ 42,365	$ 23,652,354		$ 35,189,481		$ 58,884,200

Condensed Consolidated Statem_3

Condensed Consolidated Statements Of Cash Flows - USD ($)	9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Cash flows from operating activities
Net (loss) income	$ (24,540)	$ 805,169
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization of property, machinery and equipment	3,807,281	3,684,890
Amortization of right-of-use operating lease assets	1,643,659	1,650,057
Stock-based compensation		90,432
Restricted stock expense	32,941	20,558
Deferred income tax (benefit) expense	(46,690)
Amortization of intangible assets	265,812	272,081
Amortization of financing fees	115,987	86,369
Loss from disposal or sale of machinery and equipment	171,698	19,782
Changes in operating assets and liabilities
Accounts receivable	4,515,391	5,834,858
Inventories	1,128,931	11,697,762
Prepaid expenses and other assets	(2,570,066)	(966,414)
Refundable and prepaid income taxes	752,140	(49,236)
Income taxes payable	(63,229)	52,290
Trade accounts payable	(7,125,093)	(7,988,390)
Operating lease liabilities	(422,040)	592,062
Accrued expenses and wages	1,739,518	(1,148,827)
Net cash provided by operating activities	3,921,700	14,653,443
Cash flows from investing activities
Purchases of machinery and equipment	(2,636,505)	(2,133,826)
Advances on other receivables	(4,006,500)
Net cash used in investing activities	(6,643,005)	(2,133,826)
Cash flows from financing activities
Proceeds under equipment notes	2,397,015
Payments of contingent consideration		(57,537)
Payments under finance lease and sale leaseback agreements	(1,501,321)	(1,623,661)
Payments under equipment notes	(501,930)	(308,775)
Proceeds under building notes payable	6,500,000
Payments under building notes payable	(6,401,702)	(210,000)
Borrowings under revolving line of credit	300,857,651	254,679,833
Payments under revolving line of credit	(302,157,766)	(265,009,957)
Payments of debt financing costs	(505,408)	(50,184)
Net cash used in financing activities	(1,313,461)	(12,580,281)
Change in cash and cash equivalents	(4,034,766)	(60,664)
Cash and cash equivalents at beginning of period	6,779,445	1,005,810
Cash and cash equivalents at end of period	2,744,679	945,146
Supplementary disclosures of cash flow information
Cash paid for interest	910,598	1,456,738
Cash paid for income taxes	367,061	588,915
Purchase of machinery and equipment financed under finance leases	719,545	671,446
Financing of insurance policy	$ 242,514	$ 381,345

Description Of The Business

Description Of The Business	9 Months Ended
	Jan. 31, 2021
Description Of The Business [Abstract]
Description Of The Business	Note A - Description of the Business  SigmaTron International, Inc., its subsidiaries, foreign enterprises and international procurement office (collectively, the “Company”) operates in one business segment as an independent provider of electronic manufacturing services (“EMS”), which includes printed circuit board assemblies and completely assembled (box-build) electronic products. In connection with the production of assembled products, the Company also provides services to its customers, including (1) automatic and manual assembly and testing of products; (2) material sourcing and procurement; (3) manufacturing and test engineering support; (4) design services; (5) warehousing and distribution services; and (6) assistance in obtaining product approval from governmental and other regulatory bodies.

Basis Of Presentation

Basis Of Presentation	9 Months Ended
	Jan. 31, 2021
Basis Of Presentation [Abstract]
Basis Of Presentation	Note B - Basis of Presentation  The accompanying unaudited condensed consolidated financial statements of SigmaTron International, Inc. (“SigmaTron”), SigmaTron’s wholly-owned subsidiaries Standard Components de Mexico S.A., AbleMex, S.A. de C.V., Digital Appliance Controls de Mexico, S.A. de C.V., Spitfire Controls (Vietnam) Co. Ltd., Spitfire Controls (Cayman) Co. Ltd. and wholly-owned foreign enterprises Wujiang SigmaTron Electronics Co., Ltd. and SigmaTron Electronic Technology Co., Ltd. (“SigmaTron China”) and international procurement office SigmaTron Taiwan branch (collectively, the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X.  Accordingly, the condensed consolidated financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the three and nine month period ended January 31, 202 1 is not necessarily indicative of the results that may be expected for the year ending April 30, 2021. The condensed consolidated balance sheet at April 30, 2020, was derived from audited annual financial statements but does not contain all of the footnotes disclosures from the annual financial statements. For further information, refer to the condensed consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended April 30, 2020.  COVID-19 and CARES Act  A pandemic of respiratory disease (abbreviated "COVID-19") began to spread globally, including to the United States, in early 2020. On March 11, 2020, the World Health Organization (WHO) declared COVID-19 to be a public health emergency of international concern. The full impact of the COVID-19 outbreak is inherently uncertain at the time of this report. The COVID-19 outbreak has resulted in travel restrictions and in some cases, prohibitions of non-essential activities, disruption and shutdown of certain businesses and greater uncertainty in global financial markets. The full extent to which COVID-19 impacts the Company’s business, results of operations and financial condition will depend on future developments, which are highly uncertain and cannot be predicted, including, but not limited to, the duration and spread of the outbreak within the U.S., China, Mexico, Vietnam and Taiwan, its severity, the actions to contain the virus or treat its impact, and how quickly and to what extent normal economic and operating conditions can resume. Note B - Basis of Presentation - Continued  Even after COVID-19 has subsided, the Company may continue to experience materially adverse impacts to its business as a result of its global economic impact, including any recession that has occurred or may occur in the future. There are no comparable recent events which may provide guidance as to the effect of the spread of COVID-19, and, as a result, the ultimate impact of COVID-19, or a similar health epidemic or pandemic, is highly uncertain and subject to change. The Company has adopted several measures in response to the COVID-19 outbreak. To date, the Company has been able to continue to meet the needs of its customers. Although the Company cannot estimate the length or gravity of the impact of the COVID-19 outbreak at this time, if the pandemic continues, it may have a material adverse effect on the Company’s results of future operations, financial position, and liquidity for the remainder of fiscal year 2021 and beyond .  On March 27, 2020, former President Trump signed into law the “Coronavirus Aid, Relief, and Economic Security (CARES) Act.” The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations, increased limitations on qualified charitable contributions, and technical corrections to tax depreciation methods for qualified improvement property. It also appropriated funds for the U.S. Small Business Administration (“SBA”) Paycheck Protection Program (“PPP Loan”) loans that are forgivable in certain situations to promote continued employment, as well as Economic Injury Disaster Loans to provide liquidity to small businesses harmed by COVID-19.  As further described in Note E, the Company received funds under the PPP Loan in the amount of $6,282,973. The application for these funds required the Company to, in good faith, certify that the current economic uncertainty made the loan request necessary to support the ongoing operations of the Company. This certification further required the Company to take into account its current business activity and its ability to access other sources of liquidity sufficient to support ongoing operations in a manner that is not significantly detrimental to the business. The receipt of these funds, and the forgiveness of the loan attendant to these funds, is dependent on the Company having initially qualified for the loan and qualifying for the forgiveness of such loan based on its adherence to the forgiveness criteria.  Due to the size of the PPP Loan, it is subject to review, which introduces a layer of uncertainty. If, despite the Company’s actions and certification that it satisfied all eligibility requirements for the PPP Loan, it is later determined that it violated applicable laws or was otherwise ineligible to receive the PPP Loan, the Company will be required to repay the PPP Loan in its entirety in a lump sum and may be subject to additional penalties, which could also result in adverse publicity and damage to the Company’s reputation. If these events were to transpire, they could have a material adverse effect on the Company’s business, results of operations, financial condition and liquidity for the remainder of fiscal year 2021 and beyond.  

Inventories, Net

Inventories, Net	9 Months Ended
	Jan. 31, 2021
Inventories, Net [Abstract]
Inventories, Net	Note C - Inventories, net  The components of inventory consist of the following:       January 31, April 30,  2021 2020   Finished products $ 20,427,311 $ 20,998,329  Work-in-process 5,446,277 5,215,280  Raw materials 61,418,165 62,316,122  87,291,753 88,529,731  Less excess and obsolescence reserve (1,241,315) (1,350,362)  $ 86,050,438 $ 87,179,369

Earnings Per Share And Stockhol

Earnings Per Share And Stockholders' Equity	9 Months Ended
	Jan. 31, 2021
Earnings Per Share And Stockholders' Equity [Abstract]
Earnings Per Share And Stockholders' Equity	Note D - Earnings Per Share and Stockholders’ Equity  The following table sets forth the computation of basic and diluted earnings (loss) per share:     Three Months Ended Nine Months Ended  January 31, January 31,  2021 2020 2021 2020   Net income (loss) $ 249,268 $ (217,039) $ (24,540) $ 805,169  Weighted-average shares  Basic 4,257,508 4,242,508 4,255,334 4,242,300  Effect of dilutive stock options 52,782 - - 17,722   Diluted 4,310,290 4,242,508 4,255,334 4,260,022   Basic earnings (loss) per share $ 0.06 $ (0.05) $ (0.01) $ 0.19   Diluted earnings (loss) per share $ 0.06 $ (0.05) $ (0.01) $ 0.19  Options to purchase 513,232 shares of common stock were outstanding at January 31, 202 1 and 20 20. There were no options granted during the nine month periods ended January 31, 202 1 and 20 20 . There was no stock option expense recognized for the three and nine month periods ended January 31, 202 1 and 20 20 . There was no balance of unrecognized compensation expense related to the Company’s stock option plans at January 31, 202 1 and 20 20 . For the three month period ended January 31, 202 1 and 20 20 , 143,781 and 151,282 shares, respectively, were not included in the diluted weighted average common shares outstanding calculation as they were anti-dilutive. For the nine month periods ended January 31, 202 1 and 20 20 , 240,160 and 214,177 shares, respectively, were not included in the diluted weighted average common shares outstanding calculation as they were anti-dilutive.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Jan. 31, 2021
Long-Term Debt [Abstract]
Long-Term Debt	Note E - Long-term Debt  Debt and capital lease obligations consisted of the following at January 31, 202 1 and April 30, 2020:     January 31, April 30,  2021 2020   Debt:  Notes Payable - Banks $ 31,914,633 $ 33,472,125  Notes Payable - Buildings 7,020,859 6,922,561  Notes Payable - Equipment 3,195,363 1,300,278  Unamortized deferred financing costs (364,504) (279,740)  Total debt 41,766,351 41,415,224  Less current maturities 6,596,970 2,878,160  Long-term debt $ 35,169,381 $ 38,537,064   Finance lease obligations $ 3,005,241 $ 3,787,017  Less current maturities 1,651,807 1,902,295  Total finance lease obligations, less current portion $ 1,353,434 $ 1,884,722  Notes Payable – Banks  Prior to January 29, 2021 , the Company had a senior secured credit facility with U.S. Bank . The revolving credit facility allow ed the Company to borrow up to the lesser of (i) $45,000,000 (the “Revolving Line Cap”) less reserves or (ii) the Borrowing Base, but no more than 80% of the Company’s Revolving Line Cap . Prior to its payoff and termination, the U.S. Bank senior secured credit facility was due to expire on March 31, 2022. On January 29, 2021, the Company paid the balance outstanding under the senior secured credit facility in the amount of $25,574,733 . The unamortized deferred financing costs of $158,476 were expensed in the third quarter of fiscal 2021 upon extinguishment of the debt.  On January 29, 2021, the Company entered into a Credit Agreement (the “Agreement”) with JPMorgan Chase Bank, N.A. (“Lender”), pursuant to which Lender has agreed to provide the Company with a secured revolving credit facility of up to $50,000,000 (the “Facility”) maturing on January 29, 2026 .  The Facility allows the Company to choose among interest rates at which it may borrow funds for revolving loans: “CBFR Loans,” the interest on which is based on (A) the REVLIBOR30 Rate unless the “ REVLIBOR30 Rate ” (as defined in the agreement) is not available, in which case the interest is generally the rate of interest last quoted by The Wall Street Journal as the “Prime Rate” in the U.S., plus (B) an applicable margin of 2.0% ( effectively 2.25% at January 31, 2021 ),; or “Eurodollar Loans,” the interest on which is based on (X) an interest rate per annum (rounded upwards, if necessary, to the next 1/16 of 1%) equal to the LIBO Rate (as defined in the Agreement) for any  Note E - Long-term Debt - Continued  interest period multiplied by the Standard Reserve Rate (as defined in the Agreement) plus (Y) an applicable margin of 2.0%. Under the F acility, the Company may borrow up to the lesser of (i) $5 0 ,000,000 or (ii) an amount equal to a percentage of the eligible receivable borrowing base plus a percentage of the inventory borrowing base. The Facility is collateralized by a lien on substantially all of the domestic assets of the Company. Under the Agreement, a minimum Fixed Charge Coverage Ratio (“FCCR”) financial covenant of 1.10x is applicable only during an FCCR trigger period which occurs when (i) an event of default (as defined in the Agreement) has occurred and is continuing, and Lender has elected to impose a FCCR trigger period upon notice to the Company or (ii) availability falls below the greater of (i) 10% of the revolving commitment and (ii) the outstanding principal amount of the term loans. Deferred financing costs of $354,454 were capitalized in the third quarter of fiscal 20 21 and will be amortized over the term of the agreement. As of January 3 1 , 20 21 , there was $25,584,380 outstanding and $10,390,073 of unused availability under the JPMorgan Chase Bank, N.A. facility compared to an outstanding balance of $26,884,494 and $13,850,575 of unused availability under the U.S. Bank senior secured credit facility at April 30, 2020. As of January 31, 2021 and April 30, 2020, the unamortized amount offset against outstanding debt was $351,204 and $218,062 , respectively.  On April 23, 2020, the Company received a PPP Loan from U.S. Bank, as lender, pursuant to the CARES Act, as administered by the SBA in the amount of $6,282,973 . The PPP Loan, in the form of a promissory note, matures on April 23, 2022 . No additional collateral or guarantees were provided by the Company for the PPP Loan. The PPP Loan provides for customary events of default. Under the CARES Act, loan forgiveness may be available for the sum of documented payroll costs, rent payments, mortgage interest and covered utilities during the 24-week period beginning on the date of loan disbursement. The amount of loan forgiveness will be reduced if recipients terminate employees or reduce salaries during the covered period. The Company will be required to repay any portion of the outstanding principal that is not forgiven, along with accrued interest, and it cannot provide any assurance that it will be eligible for loan forgiveness, or that any amount of the PPP Loan will ultimately be forgiven by the SBA. All aspects of the PPP Loan are subject to review by the SBA, including without limitation, the Company’s eligibility for and the size of the loan. The review procedures have not been made public. The Company cannot predict the outcome of that review nor be assured that all or any part of the PPP Loan will be forgiven. To the extent that all or part of the PPP Loan is not forgiven, the Company will be required to make payments, including interest accruing at an annual interest rate of 1.0%, beginning on the date of disbursement.  On March 15, 2019, the Company’s wholly-owned subsidiary, SigmaTron Electronic Technology Co., Ltd., entered into a credit facility with China Construction Bank. On January 26, 2021, the agreement was amended. Under the agreement SigmaTron Electronic Technology Co., Ltd. can borrow up to 9,000,000 Renminbi, approximately $1,391,000 as of January 31, 202 1 , and the facility is collateralized by Wujiang SigmaTron Electronics Co., Ltd.’s manufacturing building. Interest is payable monthly and the facility bears a fixed interest rate of 3.85% . The term of the facility extends to January 6, 2022 . There was no outstanding balance under the facility at January 31, 202 1 compared to an outstanding balance of $304,658 at April 30, 2020. Note E - Long-term Debt - Continued  Notes Payable – Buildings  The Company entered into a mortgage agreement on December 21, 2017, in the amount of $5,200,000 , with U.S. Bank to refinance the property that serves as the Company’s corporate headquarters and its Illinois manufacturing facility in Elk Grove Village, Illinois. The note require d the Company to pay monthly principal payments in the amount of $17,333 , b ore interest at a fixed rate of 4.0% per year and wa s payable over a fifty-one month period. Deferred financing costs of $74,066 were capitalized in fiscal year 2018 which were amortized over the term of the agreement. On January 29, 2021, the Company repaid its U.S. Bank mortgage agreement for the remaining amount outstanding of $4,576,000 , using proceeds from the JPMorgan Chase Bank, N.A. mortgage agreement. The Company recorded a prepayment penalty of $120,842 in the third quarter of fiscal 2021. The remaining deferred financing costs of $21,365 were expensed in the third quarter of fiscal 2021.  The Company entered into a mortgage agreement on December 21, 2017, in the amount of $1,800,000 , with U.S. Bank to refinance the property that serves as the Company’s engineering and design center in Elgin, Illinois. The note require d the Company to pay monthly principal payments in the amount of $6,000 , b ore interest at a fixed rate of 4.0% per year and wa s payable over a fifty-one month period. Deferred financing costs of $65,381 were capitalized in the fiscal year 2018 which were amortized over the term of the agreement. On January 29, 2021, the Company repaid its U.S. Bank mortgage agreement for the remaining amount outstanding of $1,584,000 , using proceeds from the JPMorgan Chase Bank, N.A. mortgage agreement. The Company recorded a prepayment penalty of $41,830 in the third quarter of fiscal 2021. The remaining deferred financing costs of $18,859 were expensed in the third quarter of fiscal 2021.  The Company entered into two term notes on January 29, 2021, in the aggregate amount of $6,500,0000 , with JPMorgan Chase Bank, N.A. secured against certain properties owned by the Company. The notes require the Company to pay monthly aggregate principal payments in the amount of $36,111 and bears interest at (A) the REVLIBOR30 Rate, unless the REVLIBOR30 Rate is not available, in which case the interest is generally the rate of interest last quoted by The Wall Street Journal as the “Prime Rate” in the U.S., plus (B) an applicable margin of 2.0% ; (effectively 2.75% at January 31, 2021) and is payable over a sixty month period. Deferred financing costs of $10,050 were capitalized in the third quarter of fiscal 2021 which are amortized over the term of the agreement. As of January 31, 2021, the unamortized amount included as a reduction to long-term debt was $10,050 . Final payments of approximately $4,368,444 is due on or before January 31, 2026 . The outstanding balance was $6,500,000 at January 31, 2021.  The Company entered into a mortgage agreement on March 3, 2020, in the amount of $556,000 , with The Bank and Trust SSB to purchase the property that serves as the Company’s warehousing and distribution center in Del Rio, Texas. The note requires the Company to pay monthly installment payments in the amount of $6,103 , bears interest at a fixed rate of 5.75% per year and is payable over a 120 month period. The outstanding balance was $520,859 and $552,561 at January 31, 202 1 and April 30, 2020, respectively.  Note E - Long-term Debt - Continued  Notes Payable – Equipment  The Company routinely enters into secured note agreements with Engencap Fin S.A. DE C.V. to finance the purchase of equipment. The terms of these secured note agreements mature from November 2021 through May 2023 , with quarterly installment payments ranging from $11,045 to $37,941 and a fixed interest rate ranging from 6.65% to 8.00% .  The Company routinely enters into secured note agreements with FGI Equipment Finance LLC to finance the purchase of equipment. The terms of these secured note agreements mature from March 2025 through October 2025 , with quarterly installment payments ranging from $10,723 to $69,439 and a fixed interest rate of 8.25% .  Annual maturities of the Company’s debt, net of deferred financing fees for the remaining periods as of January 31, 202 1 , are as follows:     Bank Building Equipment Total   For the remaining 3 months of the fiscal year ending April 30: 2021 $ 5,221,926 $ 83,096 $ 220,624 $ 5,525,646  For the fiscal years ending April 30: 2022 1,108,327 478,423 877,428 2,464,178  2023 - 481,085 652,117 1,133,202  2024 - 483,904 592,628 1,076,532  2025 - 486,890 633,149 1,120,039  2026 25,219,876 4,751,165 219,417 30,190,458  Thereafter - 256,296 - 256,296  $ 31,550,129 $ 7,020,859 $ 3,195,363 $ 41,766,351   Finance Lease and Sales Leaseback Obligations  The Company enters into various finance lease and sales leaseback agreements. The terms of the lease agreements mature through June 2024 , with monthly installment payments ranging from $1,455 to $40,173 and a fixed interest rate ranging from 3.75% to 12.73% .

Income Tax

Income Tax	9 Months Ended
	Jan. 31, 2021
Income Tax [Abstract]
Income Tax	Note F - Income Tax  The income tax benefit was $25,910 for the three month period ended January 31, 202 1 compared to an income tax benefit of $102,731 for the same period in the prior fiscal year. The Company’s effective tax rate was (11.60)% and 32.13% for the quarters ended January 31, 202 1 and 20 20 , respectively. The income tax expense was $196,199 for the nine month period ended January 31, 202 1 compared to an income tax expense of $460,490 for the same period in the prior fiscal year. The Company’s effective tax rate was 114.29% and 36.40% for the nine month period ended January 31, 202 1 and 20 20 , respectively. The de crease in income tax benefit and effective tax rate for the three Note F - Income Tax - Continued  month period ended January 31, 202 1 compared to the same period in the previous year is due to income recognized in the current quarter compared to a loss in the previous year, and variations in income earned by jurisdiction. The decrease in income tax expense and increase in effective tax rate for the nine month period ended January 31, 2021 compared to the same period in the previous year is due to a decrease in income in the current nine month period compared to the same period in the previous year and variations in income earned by jurisdiction.  As described in Note E, the Company received a PPP Loan under the CARES Act of $6,282,963. For federal income tax purposes, the CARES Act expressly provides that any forgiveness or cancellation of all or part of such loans will not be treated as income for tax purposes. On January 6, 2021 the IRS issued Revenue Ruling 2021-02 allowing deductions for the payments of eligible expenses when such payments would result in the forgiveness of a loan under the PPP. The ruling supersedes previous IRS guidance stating that such deductions would be disallowed.  The Company has not changed its plans to indefinitely reinvest the earnings of the Company’s foreign subsidiaries. The cumulative amount of unremitted earnings for which U.S. income taxes have not been recorded is $4,705,000 as of January 31, 202 1 . 

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Jan. 31, 2021
Commitments And Contingencies [Abstract]
Commitments And Contingencies	Note G - Commitments and Contingencies  From time to time the Company is involved in legal proceedings, claims or investigations that are incidental to the conduct of the Company’s business. In future periods, the Company could be subjected to cash cost or non-cash charges to earnings if any of these matters are resolved on unfavorable terms. However, although the ultimate outcome of any legal matter cannot be predicted with certainty, based on present information, including management’s assessment of the merits of any particular claim, the Company does not expect that these legal proceedings or claims will have any material adverse impact on its future consolidated financial position, results of operations or cash flows.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Jan. 31, 2021
Significant Accounting Policies [Abstract]
Significant Accounting Policies	 Note H - Significant Accounting Policies  Management Estimates and Uncertainties - The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates made in preparing the consolidated financial statements include depreciation and amortization periods, the allowance for doubtful accounts, reserves for inventory, lower of cost or net realizable value for inventory, deferred income, deferred taxes, uncertain tax positions, valuation Note H - Significant Accounting Policies - Continued  allowance for deferred taxes and valuation of long-lived assets. Actual results could materially differ from these estimates.  The potential impact of future disruptions and continued economic uncertainty over COVID-19 may have a significant adverse impact on the timing of delivery of customer orders and the levels of future customer orders. It is reasonably possible that these potential adverse impacts may result in the recognition of material impairments of the Company’s long-lived assets or other related charges in future periods.  Revenue Recognition - The following table presents the Company’s revenue disaggregated by the principal end-user markets it serves:    Three Months Ended Nine Months Ended  January 31, January 31,  Net trade sales by end-market 2021 2020 2021 2020  Industrial Electronics $ 36,433,938 $ 38,609,780 $ 108,705,275 $ 122,856,692  Consumer Electronics 30,680,777 25,632,036 82,520,093 81,106,780  Medical / Life Sciences 4,416,633 3,165,452 10,449,360 12,309,089  Total Net Trade Sales $ 71,531,348 $ 67,407,268 $ 201,674,728 $ 216,272,561   During the three and nine month periods ending January 31, 202 1 , no revenues were recognized from performance obligations satisfied or partially satisfied in previous periods and no amounts were allocated to performance obligations that remain unsatisfied or partially unsatisfied at January 31, 202 1 . The Company is electing not to disclose the value of the remaining unsatisfied performance obligation with a duration of one year or less as permitted by the practical expedient in ASU 2014-09, “ Revenue from Contracts with Customers.” The Company had no material remaining unsatisfied performance obligations as of January 31, 202 1 , with an expected duration of greater than one year.  Income Tax - The Company’s income tax expense, deferred tax assets and liabilities and reserves for unrecognized tax benefits reflect management’s best assessment of estimated future taxes to be paid. The Company is subject to income taxes in both the U.S. and several foreign jurisdictions. Significant judgments and estimates by management are required in determining the consolidated income tax expense assessment.  Deferred income tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities, and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse. In evaluating the Company’s ability to recover its deferred tax assets within the jurisdiction from which they arise, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In projecting future taxable income, the Company begins with historical results and changes in accounting policies, and incorporates assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax planning strategies. These assumptions require significant Note H - Significant Accounting Policies - Continued  judgment and estimates by management about the forecasts of future taxable income and are consistent with the plans and estimates the Company uses to manage the underlying businesses. In evaluating the objective evidence that historical results provide, the Company considers three years of cumulative operating income and/or loss. Valuation allowances are established when necessary to reduce deferred income tax assets to an amount more likely than not to be realized. The Company’s valuation allowance was $ 969,149 and $ 989,194 as of January 31, 202 1 and April 30, 2020, respectively.  Investment in Wagz - T he Company has recorded an investment in Wagz Inc. (“Wagz”), a privately held company whose equity does not have a readily determinable fair value. As permitted by ASC 321, Investments - Equity Securities, paragraph 321-35-2, the Company has elected to carry its investment in Wagz equity at its cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for identical or a similar investment of the same issuer until the investment no longer qualifies to be measured under paragraph 321-35-2. At January 31, 202 1 and April 30, 2020, the Company continued to recognize the fair value of the Wagz common stock at $600,000 .  On May 29, 2020, Wagz entered into a Convertible Secured Promissory Note with the Company in the principal sum of up to $4,052,478 . On January 27, 2021, Wagz entered into a n additional Convertible Secured Promissory Note with the Company in the principal sum of up to $1,588,328 . The outstanding principal amount of the Note s are due and payable on the earliest to occur of (1) August 31, 2021 ; (2) upon the closing of a sale of all or substantially all of the assets or common stock of Wagz; or (3) an event of default (the Maturity Date). Interest is payable at the rate of four percent ( 4% ) per annum and is payable on the Maturity Date. The n ote s are collateralized against substantially all assets of Wagz. At January 31, 202 1 , $5,539,594 was outstanding under other receivables.  On June 4, 2020, the Company and Wagz announced that they ha d executed a letter of intent (“LOI”) relating to a proposed business combination. Subject to the terms and conditions set forth in the LOI, the Company expects to issue approximately 2,443,870 shares of its common stock that would result in the stockholders of Wagz owning in the aggregate approximately one-third of the combined company. The parties expect the transaction to close by the end of the fourth quarter of fiscal year 2021 and the acquisition remains subject to achievement of certain milestones and satisfaction of conditions by both parties prior to closing such as finalizing a material definitive agreement, the Company potentially raising additional capital that it projects will be needed for the expanded operations, and the approval by the stockholders of both the Company and Wagz.  In November 2020, Wagz sought short-term financing for its operations and secured a commitment from Angel Business Credit, LLC (“ABC”) for a loan of $250,000 conditioned on Wagz granting ABC a security interest in its assets and Gary R. Fairhead executing a personal guaranty. Mr. Fairhead is the Company’s President and CEO; his personal guaranty requires the approval of the Audit Committee of the Company’s Board of Directors. After consideration, the Audit Committee determined that Mr. Fairhead’s guaranty was in the best interests of the Company and approved the guaranty. The loan closed on November 12, 2020, and its principal, plus interest equal to $5,000 , were due on the maturity date, December 10, 2020 . The loan was paid in full on December 8, 2020 . As a result, Mr. Fairhead’s guaranty was cancelled and ABC’s security interest was terminated.  Note H - Significant Accounting Policies – Continued  New Accounting Standards:  In June 2016, the FASB issued ASU No. 2016-13, “ Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments .” ASU 2016-13, as amended by ASU 2019-04 and ASU 2019-05, introduces a new forward-looking approach, based on expected losses, to estimate credit losses on certain types of financial instruments, including trade receivables. The estimate of expected credit losses will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. This ASU also expands the disclosure requirements to enable users of financial statements to understand the entity’s assumptions, models and methods for estimating expected credit losses. For small reporting companies, ASU 2016-  13 is effective for annual and interim reporting periods beginning after December 15, 2022, and the guidance is to be applied using the modified-retrospective approach. Earlier adoption is permitted for annual and interim reporting periods beginning after December 15, 2018. The Company is currently evaluating the new guidance and has not determined the impact this ASU may have on its consolidated financial statements.  In December 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes ”, which intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application of Topic 740. This guidance is effective for fiscal years beginning after December 15, 2020, including interim periods therein, and early adoption is permitted. Adoption of Topic 740 is not expected to have a material effect on the Company’s consolidated financial statements. If in a future interim reporting period the Company recognizes a year-to-date loss in excess of its forecasted full-year loss in a certain jurisdiction, the adoption of this ASU could affect how much tax benefit is recorded in an interim period related to that loss.  In March 2020, the FASB issued ASU 2020-04, “ Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting ”, which provides optional guidance for a period of time to ease the potential burden in accounting for the transition from reference rates that are expected to be discontinued. Regulators and market participants in various jurisdictions have undertaken efforts to eliminate certain reference rates and introduce new reference rates that are based on a larger and more liquid population of observable transactions. The changes provide optional expedients and exceptions for applying US GAAP to contract, hedging relationships and other transactions affected by reference rate reform. ASU 2020-04 is effective for all entities as of March 12, 2020 and can be adopted no later than December 31, 2022. The Company is currently evaluating the new guidance and has not determined the impact this ASU may have on its consolidated financial statements.

Leases

Leases	9 Months Ended
	Jan. 31, 2021
Leases [Abstract]
Leases	Note I – Leases  The Company leases office and storage space, vehicles and other equipment under non-cancellable operating leases with initial terms typically ranging from 1 to 5 years. At contract inception, the Company reviews the facts and circumstances of the arrangement to determine if the contract is or contains a lease. The Company follows the guidance in Topic 842 to evaluate whether the contract has an identified asset; if the Company has the right to obtain substantially all economic benefits from the asset; and if the Company has the right to direct the use of the underlying asset. When determining if a contract has an identified asset, the Company considers both explicit and implicit assets, and whether the supplier has the right to substitute the asset. When determining if the Company has the right to direct the use of an underlying asset, the Company considers if they have the right to direct how and for what purpose the asset is used throughout the period of use and if they control the decision-making rights over the asset.  The Company’s lease terms may include options to extend or terminate the lease. The Company exercises judgment to determine the term of those leases when extension or termination options are present and include such options in the calculation of the lease term when it is reasonably certain that it will exercise those options.  The Company has elected to include both lease and non-lease components in the determination of lease payments. Payments made to a lessor for items such as taxes, insurance, common area maintenance, or other costs commonly referred to as executory costs, are also included in lease payments if they are fixed. The fixed portion of these payments are included in the calculation of the lease liability, while any variable portion would be recognized as variable lease expenses, when incurred. Variable payments made to third parties for these, or similar costs, such as utilities, are not included in the calculation of lease payments.  At commencement, lease-related assets and liabilities are measured at the present value of future lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company exercises judgment in determining the incremental borrowing rate based on the information available when the lease commences to measure the present value of future payments.  Operating lease expense is recognized on a straight-line basis over the lease term. Finance lease cost includes amortization, which is recognized on a straight-line basis over the expected life of the leased asset, and interest expense, which is recognized following an effective interest rate method.  Operating leases are included in other assets, current operating lease obligations, and operating lease obligations (less current portion) on the Company’s consolidated balance sheet. Finance leases are included in property, plant and equipment and current and long-term portion of finance lease obligations on the Company’s consolidated balance sheet. Short term leases with an initial term of 12 months or less are not presented on the balance sheet with expense recognized as incurred. Note I – Leases – Continued  The following table presents lease assets and liabilities and their balance sheet classification:   January 31, April 30,  Classification 2021 2020  Operating Leases:  Right-of-use Assets Other assets $ 6,784,197 $ 7,235,166  Operating lease current liabilities Current portion of operating lease obligations 1,944,321 2,150,161  Operating lease noncurrent liabilities Operating lease obligations, less current portion 5,065,611 5,281,811  Finance Leases:  Right-of-use Assets Property, plant and equipment 5,881,027 6,443,954  Finance lease current liabilities Current portion of finance lease obligations 1,651,807 1,902,295  Finance lease noncurrent liabilities Finance lease obligations, less current portion 1,353,434 1,884,722  Note I – Leases – Continued  The components of lease expense for the three and nine month periods ended January 31, 202 1 and 20 20 , are as follows:     Three Months Three Months Nine Months Nine Months  Ended Ended Ended Ended  January 31, January 31, January 31, January 31,  Classification 2021 2020 2021 2020  Operating Leases:  Operating lease cost Operating expenses 351,751 635,692 1,078,763 1,855,525  Variable lease cost Operating expenses 80,109 74,133 236,803 221,927  Short term lease cost Operating expenses 1,350 1,350 4,050 4,050  Finance Leases:  Amortization of right-of-use assets Operating expenses 457,359 361,363 1,370,094 1,092,931  Interest expense Interest expense 70,698 67,377 193,099 209,503  Total 961,267 1,139,915 2,882,809 3,383,936  The weighted average lease term and discount rates for the quarter ended January 31, 202 1 and 20 20 , are as follows:    January 31, January 31,  2021 2020  Operating Leases:  Weighted average remaining lease term (months) 57.80 44.20  Weighted average discount rate 3.0% 3.8%  Finance Leases:  Weighted average remaining lease term (months) 32.75 26.42  Weighted average discount rate 7.7% 6.6%  Note I – Leases – Continued  Future payments due under leases reconciled to lease liabilities are as follows:     Operating Leases Finance Leases  For the remaining 3 months of the fiscal year ending April 30:  2021 $ 626,171 $ 569,072  For the fiscal years ending April 30:  2022 1,995,402 1,576,456  2023 2,002,572 700,135  2024 1,483,139 369,550  2025 818,840 117,355  2026 289,041 -  Thereafter 208,099 -  Total undiscounted lease payments 7,423,264 3,332,568  Present value discount, less interest 413,332 327,327  Lease liability $ 7,009,932 $ 3,005,241  Supplemental disclosures of cash flow information related to leases for the nine months ended January 31, 202 1 and 20 20 are as follows:     Nine Months Nine Months  Ended Ended  January 31, January 31,  Other Information 2021 2020  Cash paid for amounts included in the measurement of lease liabilities  Operating cash flows from finance leases 193,099 209,503  Operating cash flows from operating leases 162,220 197,970  Financing cash flows from finance leases 1,501,321 1,623,661  Supplemental non-cash information on lease labilities arising from obtaining right-of-use assets:  Right-of-use assets obtained in exchange for new finance lease liabilities 719,545 671,446  Right-of-use assets obtained in exchange for operating lease liabilities 1,192,690 2,348,231 

Significant Accounting Polici_2

Significant Accounting Policies (Policy)	9 Months Ended
	Jan. 31, 2021
Significant Accounting Policies [Abstract]
Management Estimates And Uncertainties	Management Estimates and Uncertainties - The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates made in preparing the consolidated financial statements include depreciation and amortization periods, the allowance for doubtful accounts, reserves for inventory, lower of cost or net realizable value for inventory, deferred income, deferred taxes, uncertain tax positions, valuation Note H - Significant Accounting Policies - Continued  allowance for deferred taxes and valuation of long-lived assets. Actual results could materially differ from these estimates.  The potential impact of future disruptions and continued economic uncertainty over COVID-19 may have a significant adverse impact on the timing of delivery of customer orders and the levels of future customer orders. It is reasonably possible that these potential adverse impacts may result in the recognition of material impairments of the Company’s long-lived assets or other related charges in future periods.
Revenue Recognition	Revenue Recognition - The following table presents the Company’s revenue disaggregated by the principal end-user markets it serves:    Three Months Ended Nine Months Ended  January 31, January 31,  Net trade sales by end-market 2021 2020 2021 2020  Industrial Electronics $ 36,433,938 $ 38,609,780 $ 108,705,275 $ 122,856,692  Consumer Electronics 30,680,777 25,632,036 82,520,093 81,106,780  Medical / Life Sciences 4,416,633 3,165,452 10,449,360 12,309,089  Total Net Trade Sales $ 71,531,348 $ 67,407,268 $ 201,674,728 $ 216,272,561   During the three and nine month periods ending January 31, 202 1 , no revenues were recognized from performance obligations satisfied or partially satisfied in previous periods and no amounts were allocated to performance obligations that remain unsatisfied or partially unsatisfied at January 31, 202 1 . The Company is electing not to disclose the value of the remaining unsatisfied performance obligation with a duration of one year or less as permitted by the practical expedient in ASU 2014-09, “ Revenue from Contracts with Customers.” The Company had no material remaining unsatisfied performance obligations as of January 31, 202 1 , with an expected duration of greater than one year.
Income Tax	Income Tax - The Company’s income tax expense, deferred tax assets and liabilities and reserves for unrecognized tax benefits reflect management’s best assessment of estimated future taxes to be paid. The Company is subject to income taxes in both the U.S. and several foreign jurisdictions. Significant judgments and estimates by management are required in determining the consolidated income tax expense assessment.  Deferred income tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities, and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse. In evaluating the Company’s ability to recover its deferred tax assets within the jurisdiction from which they arise, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In projecting future taxable income, the Company begins with historical results and changes in accounting policies, and incorporates assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax planning strategies. These assumptions require significant Note H - Significant Accounting Policies - Continued  judgment and estimates by management about the forecasts of future taxable income and are consistent with the plans and estimates the Company uses to manage the underlying businesses. In evaluating the objective evidence that historical results provide, the Company considers three years of cumulative operating income and/or loss. Valuation allowances are established when necessary to reduce deferred income tax assets to an amount more likely than not to be realized. The Company’s valuation allowance was $ 969,149 and $ 989,194 as of January 31, 202 1 and April 30, 2020, respectively.
Investment In Wagz	Investment in Wagz - T he Company has recorded an investment in Wagz Inc. (“Wagz”), a privately held company whose equity does not have a readily determinable fair value. As permitted by ASC 321, Investments - Equity Securities, paragraph 321-35-2, the Company has elected to carry its investment in Wagz equity at its cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for identical or a similar investment of the same issuer until the investment no longer qualifies to be measured under paragraph 321-35-2. At January 31, 202 1 and April 30, 2020, the Company continued to recognize the fair value of the Wagz common stock at $600,000 .  On May 29, 2020, Wagz entered into a Convertible Secured Promissory Note with the Company in the principal sum of up to $4,052,478 . On January 27, 2021, Wagz entered into a n additional Convertible Secured Promissory Note with the Company in the principal sum of up to $1,588,328 . The outstanding principal amount of the Note s are due and payable on the earliest to occur of (1) August 31, 2021 ; (2) upon the closing of a sale of all or substantially all of the assets or common stock of Wagz; or (3) an event of default (the Maturity Date). Interest is payable at the rate of four percent ( 4% ) per annum and is payable on the Maturity Date. The n ote s are collateralized against substantially all assets of Wagz. At January 31, 202 1 , $5,539,594 was outstanding under other receivables.  On June 4, 2020, the Company and Wagz announced that they ha d executed a letter of intent (“LOI”) relating to a proposed business combination. Subject to the terms and conditions set forth in the LOI, the Company expects to issue approximately 2,443,870 shares of its common stock that would result in the stockholders of Wagz owning in the aggregate approximately one-third of the combined company. The parties expect the transaction to close by the end of the fourth quarter of fiscal year 2021 and the acquisition remains subject to achievement of certain milestones and satisfaction of conditions by both parties prior to closing such as finalizing a material definitive agreement, the Company potentially raising additional capital that it projects will be needed for the expanded operations, and the approval by the stockholders of both the Company and Wagz.  In November 2020, Wagz sought short-term financing for its operations and secured a commitment from Angel Business Credit, LLC (“ABC”) for a loan of $250,000 conditioned on Wagz granting ABC a security interest in its assets and Gary R. Fairhead executing a personal guaranty. Mr. Fairhead is the Company’s President and CEO; his personal guaranty requires the approval of the Audit Committee of the Company’s Board of Directors. After consideration, the Audit Committee determined that Mr. Fairhead’s guaranty was in the best interests of the Company and approved the guaranty. The loan closed on November 12, 2020, and its principal, plus interest equal to $5,000 , were due on the maturity date, December 10, 2020 . The loan was paid in full on December 8, 2020 . As a result, Mr. Fairhead’s guaranty was cancelled and ABC’s security interest was terminated. 
New Accounting Standards	New Accounting Standards:  In June 2016, the FASB issued ASU No. 2016-13, “ Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments .” ASU 2016-13, as amended by ASU 2019-04 and ASU 2019-05, introduces a new forward-looking approach, based on expected losses, to estimate credit losses on certain types of financial instruments, including trade receivables. The estimate of expected credit losses will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. This ASU also expands the disclosure requirements to enable users of financial statements to understand the entity’s assumptions, models and methods for estimating expected credit losses. For small reporting companies, ASU 2016-  13 is effective for annual and interim reporting periods beginning after December 15, 2022, and the guidance is to be applied using the modified-retrospective approach. Earlier adoption is permitted for annual and interim reporting periods beginning after December 15, 2018. The Company is currently evaluating the new guidance and has not determined the impact this ASU may have on its consolidated financial statements.  In December 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes ”, which intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application of Topic 740. This guidance is effective for fiscal years beginning after December 15, 2020, including interim periods therein, and early adoption is permitted. Adoption of Topic 740 is not expected to have a material effect on the Company’s consolidated financial statements. If in a future interim reporting period the Company recognizes a year-to-date loss in excess of its forecasted full-year loss in a certain jurisdiction, the adoption of this ASU could affect how much tax benefit is recorded in an interim period related to that loss.  In March 2020, the FASB issued ASU 2020-04, “ Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting ”, which provides optional guidance for a period of time to ease the potential burden in accounting for the transition from reference rates that are expected to be discontinued. Regulators and market participants in various jurisdictions have undertaken efforts to eliminate certain reference rates and introduce new reference rates that are based on a larger and more liquid population of observable transactions. The changes provide optional expedients and exceptions for applying US GAAP to contract, hedging relationships and other transactions affected by reference rate reform. ASU 2020-04 is effective for all entities as of March 12, 2020 and can be adopted no later than December 31, 2022. The Company is currently evaluating the new guidance and has not determined the impact this ASU may have on its consolidated financial statements.

Inventories, Net (Tables)

Inventories, Net (Tables)	9 Months Ended
	Jan. 31, 2021
Inventories, Net [Abstract]
Components Of Inventory	   January 31, April 30,  2021 2020   Finished products $ 20,427,311 $ 20,998,329  Work-in-process 5,446,277 5,215,280  Raw materials 61,418,165 62,316,122  87,291,753 88,529,731  Less excess and obsolescence reserve (1,241,315) (1,350,362)  $ 86,050,438 $ 87,179,369 

Earnings Per Share And Stockh_2

Earnings Per Share And Stockholders' Equity (Tables)	9 Months Ended
	Jan. 31, 2021
Earnings Per Share And Stockholders' Equity [Abstract]
Computation Of Basic And Diluted Earnings (Loss) Per Share	  Three Months Ended Nine Months Ended  January 31, January 31,  2021 2020 2021 2020   Net income (loss) $ 249,268 $ (217,039) $ (24,540) $ 805,169  Weighted-average shares  Basic 4,257,508 4,242,508 4,255,334 4,242,300  Effect of dilutive stock options 52,782 - - 17,722   Diluted 4,310,290 4,242,508 4,255,334 4,260,022   Basic earnings (loss) per share $ 0.06 $ (0.05) $ (0.01) $ 0.19   Diluted earnings (loss) per share $ 0.06 $ (0.05) $ (0.01) $ 0.19 

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Jan. 31, 2021
Long-Term Debt [Abstract]
Schedule Of Debt And Finance Lease Obligations	  January 31, April 30,  2021 2020   Debt:  Notes Payable - Banks $ 31,914,633 $ 33,472,125  Notes Payable - Buildings 7,020,859 6,922,561  Notes Payable - Equipment 3,195,363 1,300,278  Unamortized deferred financing costs (364,504) (279,740)  Total debt 41,766,351 41,415,224  Less current maturities 6,596,970 2,878,160  Long-term debt $ 35,169,381 $ 38,537,064   Finance lease obligations $ 3,005,241 $ 3,787,017  Less current maturities 1,651,807 1,902,295  Total finance lease obligations, less current portion $ 1,353,434 $ 1,884,722 
Aggregate Amount Of Debt, Net Deferred Financing Fees	  Bank Building Equipment Total   For the remaining 3 months of the fiscal year ending April 30: 2021 $ 5,221,926 $ 83,096 $ 220,624 $ 5,525,646  For the fiscal years ending April 30: 2022 1,108,327 478,423 877,428 2,464,178  2023 - 481,085 652,117 1,133,202  2024 - 483,904 592,628 1,076,532  2025 - 486,890 633,149 1,120,039  2026 25,219,876 4,751,165 219,417 30,190,458  Thereafter - 256,296 - 256,296  $ 31,550,129 $ 7,020,859 $ 3,195,363 $ 41,766,351  

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	9 Months Ended
	Jan. 31, 2021
Significant Accounting Policies [Abstract]
Revenue Disaggregated By Principal End-User Markets	  Three Months Ended Nine Months Ended  January 31, January 31,  Net trade sales by end-market 2021 2020 2021 2020  Industrial Electronics $ 36,433,938 $ 38,609,780 $ 108,705,275 $ 122,856,692  Consumer Electronics 30,680,777 25,632,036 82,520,093 81,106,780  Medical / Life Sciences 4,416,633 3,165,452 10,449,360 12,309,089  Total Net Trade Sales $ 71,531,348 $ 67,407,268 $ 201,674,728 $ 216,272,561  

Lease (Tables)

Lease (Tables)	9 Months Ended
	Jan. 31, 2021
Leases [Abstract]
Lease Assets And Liabilities Related To Balance Sheet Classification	  January 31, April 30,  Classification 2021 2020  Operating Leases:  Right-of-use Assets Other assets $ 6,784,197 $ 7,235,166  Operating lease current liabilities Current portion of operating lease obligations 1,944,321 2,150,161  Operating lease noncurrent liabilities Operating lease obligations, less current portion 5,065,611 5,281,811  Finance Leases:  Right-of-use Assets Property, plant and equipment 5,881,027 6,443,954  Finance lease current liabilities Current portion of finance lease obligations 1,651,807 1,902,295  Finance lease noncurrent liabilities Finance lease obligations, less current portion 1,353,434 1,884,722 
Components Of Lease Expense	  Three Months Three Months Nine Months Nine Months  Ended Ended Ended Ended  January 31, January 31, January 31, January 31,  Classification 2021 2020 2021 2020  Operating Leases:  Operating lease cost Operating expenses 351,751 635,692 1,078,763 1,855,525  Variable lease cost Operating expenses 80,109 74,133 236,803 221,927  Short term lease cost Operating expenses 1,350 1,350 4,050 4,050  Finance Leases:  Amortization of right-of-use assets Operating expenses 457,359 361,363 1,370,094 1,092,931  Interest expense Interest expense 70,698 67,377 193,099 209,503  Total 961,267 1,139,915 2,882,809 3,383,936 
Weighted Average Lease Term And Discount Rate	  January 31, January 31,  2021 2020  Operating Leases:  Weighted average remaining lease term (months) 57.80 44.20  Weighted average discount rate 3.0% 3.8%  Finance Leases:  Weighted average remaining lease term (months) 32.75 26.42  Weighted average discount rate 7.7% 6.6% 
Future Payments Due Under Operating and Finance Leases	  Operating Leases Finance Leases  For the remaining 3 months of the fiscal year ending April 30:  2021 $ 626,171 $ 569,072  For the fiscal years ending April 30:  2022 1,995,402 1,576,456  2023 2,002,572 700,135  2024 1,483,139 369,550  2025 818,840 117,355  2026 289,041 -  Thereafter 208,099 -  Total undiscounted lease payments 7,423,264 3,332,568  Present value discount, less interest 413,332 327,327  Lease liability $ 7,009,932 $ 3,005,241 
Supplemental Cash Flow Information Related To Leases	  Nine Months Nine Months  Ended Ended  January 31, January 31,  Other Information 2021 2020  Cash paid for amounts included in the measurement of lease liabilities  Operating cash flows from finance leases 193,099 209,503  Operating cash flows from operating leases 162,220 197,970  Financing cash flows from finance leases 1,501,321 1,623,661  Supplemental non-cash information on lease labilities arising from obtaining right-of-use assets:  Right-of-use assets obtained in exchange for new finance lease liabilities 719,545 671,446  Right-of-use assets obtained in exchange for operating lease liabilities 1,192,690 2,348,231 

Description Of The Business (Na

Description Of The Business (Narrative) (Details)	9 Months Ended
	Jan. 31, 2021segment
Description Of Business [Abstract]
Number of business segments as an independent provider of electronic manufacturing services	1

Basis Of Presentation (Narrativ

Basis Of Presentation (Narrative) (Details)	Apr. 23, 2020USD ($)
U.S. Bank [Member] | Paycheck Protection Program [Member]
Basis Of Presentation [Line Items]
Loan	$ 6,282,973

Inventories, Net (Components Of

Inventories, Net (Components Of Inventory) (Details) - USD ($)	Jan. 31, 2021	Apr. 30, 2020
Inventories, Net [Abstract]
Finished products	$ 20,427,311	$ 20,998,329
Work-in-process	5,446,277	5,215,280
Raw materials	61,418,165	62,316,122
Total inventory, gross	87,291,753	88,529,731
Less excess and obsolescence reserve	(1,241,315)	(1,350,362)
Total inventory, net	$ 86,050,438	$ 87,179,369

Earnings Per Share And Stockh_3

Earnings Per Share And Stockholders' Equity (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Earnings Per Share And Stockholders' Equity [Abstract]
Options to purchase, common stock outstanding	513,232	513,232	513,232	513,232
Options granted			0	0
Stock option expense	$ 0	$ 0	$ 0	$ 0
Balance of unrecognized compensation expense related to stock options plans	$ 0	$ 0	$ 0	$ 0
Anti-dilutive common stock outstanding excluded from the calculation of diluted earnings per share	143,781	151,282	240,160	214,177

Earnings Per Share And Stockh_4

Earnings Per Share And Stockholders' Equity (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($)	3 Months Ended						9 Months Ended
	Jan. 31, 2021	Oct. 31, 2020	Jul. 31, 2020	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Jan. 31, 2021	Jan. 31, 2020
Earnings Per Share And Stockholders' Equity [Abstract]
Net income (loss)	$ 249,268	$ 626,858	$ (900,666)	$ (217,039)	$ 661,183	$ 361,025	$ (24,540)	$ 805,169
Weighted-average shares, Basic	4,257,508			4,242,508			4,255,334	4,242,300
Weighted-average shares, Effect of dilutive stock options	52,782							17,722
Diluted	4,310,290			4,242,508			4,255,334	4,260,022
Basic earnings (loss) per share	$ 0.06			$ (0.05)			$ (0.01)	$ 0.19
Diluted earnings (loss) per share	$ 0.06			$ (0.05)			$ (0.01)	$ 0.19

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details)	Jan. 29, 2021USD ($)	Jan. 28, 2021USD ($)	Apr. 23, 2020USD ($)	Mar. 03, 2020USD ($)	Dec. 21, 2017USD ($)	Jan. 31, 2021USD ($)	Jan. 31, 2021USD ($)	Jan. 31, 2020USD ($)	Apr. 30, 2020USD ($)	Mar. 15, 2019CNY (¥)	Apr. 30, 2018USD ($)
Debt Instrument [Line Items]
Payment under revolving line of credit							$ 302,157,766	$ 265,009,957
Repayment of mortgage agreement							6,401,702	$ 210,000
Notes Payable - Building [Member] | Corporate Headquarters And Manufacturing Facility [Member]
Debt Instrument [Line Items]
Prepayment penalty						$ 120,842
Senior Secured Credit Facility [Member] | Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Payment under revolving line of credit	$ 25,574,733
Unamortized deferred financing costs						158,476	158,476
Unamortized amount						351,204	351,204		$ 218,062
U.S. Bank [Member] | Notes Payable - Building [Member] | Corporate Headquarters And Manufacturing Facility [Member]
Debt Instrument [Line Items]
Deferred financing costs						21,365	21,365				$ 74,066
Repayment of mortgage agreement	4,576,000
Mortgage agreement, amount					$ 5,200,000
Mortgage agreement, monthly principal payment					$ 17,333
Mortgage agreement, interest rate					4.00%
Mortgage agreement, payable period					51 months
U.S. Bank [Member] | Notes Payable - Building [Member] | Engineering And Design Center [Member]
Debt Instrument [Line Items]
Deferred financing costs						18,859	18,859				$ 65,381
Prepayment penalty						41,830
Mortgage agreement, amount					$ 1,800,000
Mortgage agreement, monthly principal payment					$ 6,000
Mortgage agreement, interest rate					4.00%
Mortgage agreement, payable period					51 months
Mortgage agreement, outstanding amount	1,584,000
U.S. Bank [Member] | Paycheck Protection Program [Member]
Debt Instrument [Line Items]
Loan			$ 6,282,973
Effective interest rate			1.00%
Maturity date			Apr. 23, 2022
U.S. Bank [Member] | Senior Secured Credit Facility [Member] | Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Outstanding balance under the credit facility									26,884,494
Unused availability under the credit facility									13,850,575
U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Credit facility		$ 45,000,000
Borrowing base percentage		80.00%
JPMorgan Chase Bank [Member] | Notes Payable - Building [Member] | Corporate Headquarters And Manufacturing Facility [Member]
Debt Instrument [Line Items]
Deferred financing costs						10,050	10,050
Unamortized amount						10,050	10,050
Mortgage agreement, monthly principal payment							$ 36,111
Mortgage agreement, interest rate							2.00%
Mortgage agreement, payable period							60 months
Mortgage agreement, effective interest rate							2.75%
Mortgage agreement, final payment						4,368,444	$ 4,368,444
Mortgage agreement, maturity date							Jan. 31, 2026
Mortgage agreement, outstanding amount	$ 65,000,000					$ 6,500,000	$ 6,500,000
JPMorgan Chase Bank [Member] | Senior Secured Credit Facility [Member] | Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Variable interest rate							2.00%
Effective interest rate						2.25%	2.25%
Outstanding balance under the credit facility						$ 25,584,380	$ 25,584,380
Unused availability under the credit facility						10,390,073	$ 10,390,073
Percentage of the revolving commitment							10.00%
Deferred financing costs						354,454	$ 354,454
Maturity date	Jan. 29, 2026
The Bank And Trust SSB [Member] | Notes Payable - Building [Member] | Warehousing And Distribution Center [Member]
Debt Instrument [Line Items]
Mortgage agreement, amount				$ 556,000
Mortgage agreement, monthly principal payment				$ 6,103
Mortgage agreement, interest rate				5.75%
Mortgage agreement, payable period				120 months
Mortgage agreement, outstanding amount						$ 520,859	$ 520,859		552,561
FGI Equipment Finance LLC [Member] | Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Fixed interest rate						8.25%	8.25%
Minimum [Member] | Finance Lease And Sales Leaseback Agreements [Member]
Debt Instrument [Line Items]
Fixed interest rate						3.75%	3.75%
Quarterly installment payments under secured note agreements							$ 1,455
Minimum [Member] | Engencap Fin S.A. DE C.V. [Member] | Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Fixed interest rate						6.65%	6.65%
Maturity date							Nov. 1, 2021
Quarterly installment payments under secured note agreements							$ 11,045
Minimum [Member] | FGI Equipment Finance LLC [Member] | Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Maturity date							Mar. 1, 2025
Quarterly installment payments under secured note agreements							$ 10,723
Maximum [Member] | Finance Lease And Sales Leaseback Agreements [Member]
Debt Instrument [Line Items]
Fixed interest rate						12.73%	12.73%
Maturity date							Jun. 1, 2024
Quarterly installment payments under secured note agreements							$ 40,173
Maximum [Member] | JPMorgan Chase Bank [Member] | Senior Secured Credit Facility [Member] | Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Credit facility	$ 50,000,000
Maximum [Member] | Engencap Fin S.A. DE C.V. [Member] | Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Fixed interest rate						8.00%	8.00%
Maturity date							May 1, 2023
Quarterly installment payments under secured note agreements							$ 37,941
Maximum [Member] | FGI Equipment Finance LLC [Member] | Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Maturity date							Oct. 1, 2025
Quarterly installment payments under secured note agreements							$ 69,439
SigmaTron Electronic Technology Co [Member] | China Construction Bank [Member] | Credit Facility [Member] | Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Credit facility						$ 1,391,000	$ 1,391,000			¥ 9,000,000
Fixed interest rate						3.85%	3.85%
Outstanding balance under the credit facility						$ 0	$ 0		$ 304,658
Maturity date							Jan. 6, 2022

Long-Term Debt (Schedule Of Deb

Long-Term Debt (Schedule Of Debt And Finance Lease Obligations) (Details) - USD ($)	Jan. 31, 2021	Apr. 30, 2020
Debt Instrument [Line Items]
Unamortized deferred financing costs	$ (364,504)	$ (279,740)
Total debt	41,766,351	41,415,224
Less current maturities	6,596,970	2,878,160
Long-term debt	35,169,381	38,537,064
Finance lease obligations	3,005,241	3,787,017
Less current maturities	1,651,807	1,902,295
Total finance lease obligations, less current portion	1,353,434	1,884,722
Notes Payable - Bank [Member]
Debt Instrument [Line Items]
Debt	31,914,633	33,472,125
Total debt	31,550,129
Notes Payable - Building [Member]
Debt Instrument [Line Items]
Debt	7,020,859	6,922,561
Total debt	7,020,859
Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Debt	3,195,363	$ 1,300,278
Total debt	$ 3,195,363

Long-Term Debt (Aggregate Amoun

Long-Term Debt (Aggregate Amount Of Debt, Net Deferred Financing Fees) (Details) - USD ($)	Jan. 31, 2021	Apr. 30, 2020
For the remaining 3 months of the fiscal year ending April 30: 2021	$ 5,525,646
For the fiscal years ending April 30:
2022	2,464,178
2023	1,133,202
2024	1,076,532
2025	1,120,039
2026	30,190,458
Thereafter	256,296
Total debt	41,766,351	$ 41,415,224
Notes Payable - Bank [Member]
For the remaining 3 months of the fiscal year ending April 30: 2021	5,221,926
For the fiscal years ending April 30:
2022	1,108,327
2023
2024
2025
2026	25,219,876
Thereafter
Total debt	31,550,129
Notes Payable - Building [Member]
For the remaining 3 months of the fiscal year ending April 30: 2021	83,096
For the fiscal years ending April 30:
2022	478,423
2023	481,085
2024	483,904
2025	486,890
2026	4,751,165
Thereafter	256,296
Total debt	7,020,859
Notes Payable - Equipment [Member]
For the remaining 3 months of the fiscal year ending April 30: 2021	220,624
For the fiscal years ending April 30:
2022	877,428
2023	652,117
2024	592,628
2025	633,149
2026	219,417
Thereafter
Total debt	$ 3,195,363

Income Tax (Narrative) (Details

Income Tax (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020	Apr. 23, 2020
Income Tax [Line Items]
Income tax (benefit) expense	$ (25,910)	$ (102,731)	$ 196,199	$ 460,490
U.S. statutory income tax rate	(11.60%)	32.13%	114.29%	36.40%
Cumulative earnings	$ 4,705,000		$ 4,705,000
Paycheck Protection Program [Member] | U.S. Bank [Member]
Income Tax [Line Items]
Loan					$ 6,282,973

Significant Accounting Polici_4

Significant Accounting Policies (Narrative) (Details) - USD ($)	Jun. 04, 2020	May 29, 2020	Nov. 30, 2020	Jan. 31, 2021	Jan. 31, 2021	Jan. 27, 2021	Apr. 30, 2020
Critical Accounting Policies [Line Items]
Revenues recognized from performance obligations satisfied or partially satisfied				$ 0	$ 0
Amounts allocated to performance obligations remain unsatisfied or partially unsatisfied				0	0
Valuation allowances				969,149	969,149		$ 989,194
Outstanding under other receivables				8,724,894	8,724,894		2,642,094
New shares expects to issue	2,443,870
Convertible Secured Promissory Note [Member]
Critical Accounting Policies [Line Items]
Maturity date		Aug. 31, 2021
Interest rate		4.00%
Outstanding under other receivables				5,539,594	5,539,594
Wagz [Member]
Critical Accounting Policies [Line Items]
Fair value of the common stock				$ 600,000	$ 600,000		$ 600,000
Wagz [Member] | Convertible Secured Promissory Note [Member] | Maximum [Member]
Critical Accounting Policies [Line Items]
Convertible secured promissory note		$ 4,052,478				$ 1,588,328
Gary R. Fairhead [Member] | Wagz [Member]
Critical Accounting Policies [Line Items]
Loan			$ 250,000
Interest			$ 5,000
Maturity date			Dec. 10, 2020

Significant Accounting Polici_5

Significant Accounting Policies (Revenue Disaggregated By Principal End-User Markets) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 71,531,348	$ 67,407,268	$ 201,674,728	$ 216,272,561
Industrial Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	36,433,938	38,609,780	108,705,275	122,856,692
Consumer Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	30,680,777	25,632,036	82,520,093	81,106,780
Medical / Life Sciences [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 4,416,633	$ 3,165,452	$ 10,449,360	$ 12,309,089

Leases (Narratives) (Details)

Leases (Narratives) (Details)	Jan. 31, 2021
Minimum [Member]
Leases [Line Items]
Operating leases, term	1 year
Maximum [Member]
Leases [Line Items]
Operating leases, term	5 years

Leases (Lease Assets And Liabil

Leases (Lease Assets And Liabilities Related To Balance Sheet Classification) (Details) - USD ($)	Jan. 31, 2021	Apr. 30, 2020
Leases [Abstract]
Operating Leases: Right-of-use Assets	$ 6,784,197	$ 7,235,166
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
Operating lease current liabilities	$ 1,944,321	$ 2,150,161
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Operating lease current liabilities	Operating lease current liabilities
Operating lease noncurrent liabilities	$ 5,065,611	$ 5,281,811
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Operating lease noncurrent liabilities	Operating lease noncurrent liabilities
Finance Leases: Right-of-use Assets	$ 5,881,027	$ 6,443,954
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property Plant And Equipment Net	Property Plant And Equipment Net
Finance lease current liabilities	$ 1,651,807	$ 1,902,295
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Finance lease current liabilities	Finance lease current liabilities
Finance lease noncurrent liabilities	$ 1,353,434	$ 1,884,722
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Finance lease noncurrent liabilities	Finance lease noncurrent liabilities

Leases (Components Of Lease Exp

Leases (Components Of Lease Expense) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Operating lease cost	$ 351,751	$ 635,692	$ 1,078,763	$ 1,855,525
Variable lease cost	80,109	74,133	236,803	221,927
Short term lease cost	1,350	1,350	4,050	4,050
Amortization of right-of-use assets	457,359	361,363	1,370,094	1,092,931
Interest expense	70,698	67,377	193,099	209,503
Total	$ 961,267	$ 1,139,915	$ 2,882,809	$ 3,383,936

Leases (Weighted Average Lease

Leases (Weighted Average Lease Term And Discount Rate) (Details)	Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Operating Leases: Weighted average remaining lease term (months)	57 months 24 days	44 months 6 days
Operating Leases: Weighted average discount rate	3.00%	3.80%
Finance Leases: Weighted average remaining lease term (months)	32 months 23 days	26 months 13 days
Finance Leases: Weighted average discount rate	7.70%	6.60%

Leases (Future Payments Due Und

Leases (Future Payments Due Under Operating And Finance Leases) (Details) - USD ($)	Jan. 31, 2021	Apr. 30, 2020
Operating Leases
For the remaining 3 months of the fiscal year ending April 30: 2021	$ 626,171
For the fiscal year ending April 30: 2022	1,995,402
For the fiscal year ending April 30: 2023	2,002,572
For the fiscal year ending April 30: 2024	1,483,139
For the fiscal year ending April 30: 2025	818,840
For the fiscal year ending April 30: 2026	289,041
Thereafter	208,099
Total undiscounted lease payments	7,423,264
Present value discount, less interest	413,332
Lease liability	7,009,932
Finance Leases
For the remaining 6 months of the fiscal year ending April 30: 2021	569,072
For the fiscal year ending April 30: 2022	1,576,456
For the fiscal year ending April 30: 2023	700,135
For the fiscal year ending April 30: 2024	369,550
For the fiscal year ending April 30: 2025	117,355
For the fiscal year ending April 30: 2026
Thereafter
Total undiscounted lease payments	3,332,568
Present value discount, less interest	327,327
Lease liability	$ 3,005,241	$ 3,787,017

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow Information Related To Leases) (Details) - USD ($)	9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Operating cash flows from finance leases	$ 193,099	$ 209,503
Operating cash flows from operating leases	162,220	197,970
Financing cash flows from finance leases	1,501,321	1,623,661
Right-of-use assets obtained in exchange for new finance lease liabilities	719,545	671,446
Right-of-use assets obtained in exchange for operating lease liabilities	$ 1,192,690	$ 2,348,231