SigmaTron International (SGMA) 10-Q 12 Sep 19 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Jul. 31, 2019	Sep. 10, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 31, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Registrant Name	SIGMATRON INTERNATIONAL INC
Entity Central Index Key	0000915358
Current Fiscal Year End Date	--04-30
Entity Current Reporting Status	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		4,242,508

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($)	Jul. 31, 2019	Apr. 30, 2019
Current assets:
Cash and cash equivalents	$ 1,487,730	$ 1,005,810
Accounts receivable, less allowance for doubtful accounts of $631,283 at July 31, 2019 and April 30, 2019	31,929,092	31,441,381
Inventories, net	74,255,011	85,579,575
Prepaid expenses and other assets	2,426,259	2,436,894
Refundable and prepaid income taxes	1,144,693	1,339,739
Other receivables	1,875,358	1,741,890
Total current assets	113,118,143	123,545,289
Property, machinery and equipment, net	32,681,869	33,232,769
Intangible assets, net	2,621,940	2,713,360
Deferred income taxes	384,022	384,022
Other assets	6,982,585	1,589,325
Total other long-term assets	9,988,547	4,686,707
Total assets	155,788,559	161,464,765
Current liabilities:
Trade accounts payable	36,240,995	45,627,014
Accrued wages	5,192,603	4,680,399
Accrued expenses	2,722,534	2,410,311
Income taxes payable	41,831	60,921
Current portion of long-term debt	691,701	691,701
Current portion of finance lease obligations	1,821,341	1,939,374
Current portion of operating lease obligations	2,049,962
Contingent consideration		57,537
Current portion of deferred rent		139,509
Total current liabilities	48,760,967	55,606,766
Long-term debt, less current portion	40,503,158	42,710,954
Income taxes payable	452,619	500,263
Finance lease obligations, less current portion	2,368,517	2,862,784
Operating lease obligations, less current portion	3,692,295
Deferred rent, less current portion		179,059
Other long-term liabilities	1,191,665	1,155,907
Deferred income taxes	170,869	161,583
Total long-term liabilities	48,379,123	47,570,550
Total liabilities	97,140,090	103,177,316
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, 4,242,508 and 4,240,008 shares issued and outstanding at July 31, 2019 and April 30, 2019, respectively	42,146	42,146
Capital in excess of par value	23,474,379	23,474,379
Retained earnings	35,131,944	34,770,924
Total stockholders' equity	58,648,469	58,287,449
Total liabilities and stockholders' equity	$ 155,788,559	$ 161,464,765

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Jul. 31, 2019	Apr. 30, 2019
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 631,283	$ 631,283
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	4,242,508	4,240,008
Common stock, shares outstanding	4,242,508	4,240,008

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Condensed Consolidated Statements Of Operations [Abstract]
Net sales	$ 74,009,981	$ 71,414,057
Cost of products sold	67,049,649	65,625,001
Gross profit	6,960,332	5,789,056
Selling and administrative expenses	5,827,326	5,934,116
Operating income (loss)	1,133,006	(145,060)
Other (income) expense	(66,362)	25,063
Interest expense	591,228	553,490
Income (loss) before income tax expense	608,140	(723,613)
Income tax expense (benefit)	247,115	(197,006)
Net income (loss)	$ 361,025	$ (526,607)
Earning (loss) per share - basic	$ 0.09	$ (0.12)
Earning (loss) per share - diluted	$ 0.09	$ (0.12)
Weighted average shares of common stock outstanding - Basic	4,241,883	4,223,657
Weighted average shares of common stock outstanding - Diluted	4,241,883	4,223,657

Condensed Consolidated Statem_2

Condensed Consolidated Statements Of Changes In Stockholders' Equity - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Total
Balance at Apr. 30, 2018		$ 41,896	$ 23,132,017	$ 35,636,038	$ 58,809,951
Net income (loss)				526,607	526,607
Balance at Jul. 31, 2018		41,896	23,132,017	35,109,431	58,283,344
Balance at Apr. 30, 2019		42,146	23,474,379	34,770,924	58,287,449
Net income (loss)				(361,025)	(361,025)
Balance at Jul. 31, 2019		42,146	23,474,379	35,131,944	58,648,469
Cumulative-effect adjustment for the adoption of Topic 842				$ (5)	$ (5)

Condensed Consolidated Statem_3

Condensed Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Cash flows from operating activities
Net income (loss)	$ 361,025	$ (526,607)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1,235,516	1,267,528
Amortization of right-of-use operating leased assets	532,418
Deferred income tax expense (benefit)	9,286	(251,158)
Amortization of intangible assets	91,420	94,105
Amortization of financing fees	26,614	20,704
Fair value adjustment of contingent consideration		17,529
Loss from disposal or sale of machinery and equipment	51	34
Changes in operating assets and liabilities
Accounts receivable	(487,711)	(4,522,665)
Inventories	11,324,564	(1,083,002)
Prepaid expenses and other assets	57,808	263,923
Refundable and prepaid income taxes	195,046	(86,267)
Income taxes payable	(66,734)	(43,281)
Trade accounts payable	(9,386,019)	1,422,738
Deferred rent		(68,242)
Operating lease liabilities	(586,079)
Accrued expenses and wages	763,629	53,565
Net cash provided by (used in) operating activities	4,070,834	(3,441,096)
Cash flows from investing activities
Purchases of machinery and equipment	(684,667)	(706,808)
Net cash used in investing activities	(684,667)	(706,808)
Cash flows from financing activities
Proceeds under equipment note		182,557
Payments of contingent consideration	(57,537)	(55,075)
Payments under finance lease and sale leaseback agreements	(612,300)	(643,290)
Payments under equipment notes	(102,925)	(93,798)
Payments under building notes payable	(70,000)	(70,000)
Borrowings under revolving line of credit	82,796,750	82,479,011
Payments under revolving line of credit	(84,852,276)	(77,556,902)
Payments of debt financing costs	(5,959)	(11,100)
Net cash (used in) provided by financing activities	(2,904,247)	4,231,403
Change in cash and cash equivalents	481,920	83,499
Cash and cash equivalents at beginning of period	1,005,810	1,721,599
Cash and cash equivalents at end of period	1,487,730	1,805,098
Supplementary disclosures of cash flow information
Cash paid for interest	564,188	504,897
Cash paid for income taxes	162,276	160,239
Financing of insurance policy	$ 96,556	$ 67,675

Description Of The Business

Description Of The Business	3 Months Ended
	Jul. 31, 2019
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	3 Months Ended
	Jul. 31, 2019
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 month period ended July 31, 2019 is not necessarily indicative of the results that may be expected for the year ending April 30, 2020. The condensed consolidated balance sheet at April 30, 2019, 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, 2019.

Inventories, Net

Inventories, Net	3 Months Ended
	Jul. 31, 2019
Inventories, Net [Abstract]
Inventories, Net	Note C - Inventories, net  The components of inventory consist of the following:       July 31, April 30,  2019 2019   Finished products $ 22,414,687 $ 20,682,669  Work-in-process 2,955,440 3,037,810  Raw materials 50,192,856 63,203,068  75,562,983 86,923,547  Less excess and obsolescence reserve (1,307,972) (1,343,972)  $ 74,255,011 $ 85,579,575

Earnings Per Share And Stockhol

Earnings Per Share And Stockholders' Equity	3 Months Ended
	Jul. 31, 2019
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  July 31,  2019 2018   Net income (loss) $ 361,025 $ (526,607)  Weighted-average shares  Basic 4,241,883 4,223,657  Effect of dilutive stock options - -   Diluted 4,241,883 4,223,657   Basic earnings (loss) per share $ 0.09 $ (0.12)   Diluted earnings (loss) per share $ 0.09 $ (0.12)  Options to purchase 465,232 and 347,318 shares of common stock were outstanding at July 31, 2019 and 2018, respectively. There were no options granted during the three month periods ended July 31, 2019 and 2018, respectively. There was no stock option expense recognized for the three month periods ended July 31, 2019 and 2018, respectively. There was no balance of unrecognized compensation expense related to the Company’s stock option plans at July 31, 2019 and 2018. For the three month period ended July 31, 2019 and 2018, 424,484 and 0 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	3 Months Ended
	Jul. 31, 2019
Long-Term Debt [Abstract]
Long-Term Debt	Note E - Long-term Debt  Debt and capital lease obligations consisted of the following at July 31, 2019 and April 30, 2019:     July 31, April 30,  2019 2019   Debt:  Notes Payable - Banks $ 33,671,686 $ 35,727,212  Notes Payable - Buildings 6,580,000 6,650,000  Notes Payable - Equipment 1,225,828 1,328,753  Unamortized deferred financing costs (282,655) (303,310)  Total debt 41,194,859 43,402,655  Less current maturities 691,701 691,701  Long-term debt $ 40,503,158 $ 42,710,954   Finance lease and sale leaseback obligations $ 4,189,858 $ 4,802,158  Less current maturities 1,821,341 1,939,374  Total finance lease obligations, less current portion $ 2,368,517 $ 2,862,784  Notes Payable – Banks  On March 31, 2017, the Company entered into a $35,000,000 senior secured credit facility with U.S. Bank, which expires on March 31, 2022 . The credit facility is collateralized by substantially all of the Company’s domestically located assets. The facility allows the Company to choose among interest rates at which it may borrow funds: the bank fixed rate of five percent or LIBOR plus one and one half percent (effectively 3.81% at July 31, 2019). Interest is due monthly.  On July 16, 2018, the Company and U.S. Bank entered into an amendment of the revolving line of credit under the senior secured credit facility. The amended revolving credit facility allows 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 90% of the Company’s Revolving Line Cap, except that the 90% limitation will expire if (i) the Company’s actual revolving loans for 90 consecutive days after the amendment’s effective date are less than 80% of the Company’s Borrowing Base and (ii) the Company maintains a Fixed Charge Coverage Ratio of 1.2 to 1.0 for four consecutive quarters. The amendment also imposes sublimits on categories of inventory equal to $10,500,000 on raw materials, $10,000,000 on finished goods and $28,000,000 on all eligible inventory.  On December 13, 2018, the Company and U.S. Bank entered into an amendment of the revolving credit facility. The amendment provides an exception to otherwise ineligible foreign receivables for up to $3,000,000 of receivables paid by certain enumerated account debtors outside of the U.S. and Canada.   Note E - Long-term Debt - Continued  On March 22, 2019, the Company and U.S. Bank entered into an amendment of the revolving credit facility. The amendment allows the Company to borrow up to the lesser of (i) the Revolving Line Cap less reserves or (ii) the Borrowing Base, but no more than 95% of the Company’s Revolving Line Cap until August 1, 2019 and 90% on and after August 1, 2019.  On August 26, 2019, the Company and U.S. Bank entered into an amendment of the revolving credit facility. The amendment allows the Company to borrow up to the lesser of (i) the Revolving Line Cap less reserves or (ii) the Borrowing Base, but no more than 95% of the Company’s Revolving Line Cap until February 26, 2020 and 90% on and after February 26, 2020.  As of July 31, 2019, there was $33,671,686 outstanding and $8,993,594 of unused availability under the U.S. Bank facility compared to an outstanding balance of $35,727,212 and $6,645,730 of unused availability at April 30, 2019. At July 31, 2019, the Company was in compliance with its financial covenant and other restrictive covenants under the credit facility. Deferred financing costs of $5,959 were capitalized during the three month period ended July 31, 2019, which are amortized over the term of the agreement. As of July 31, 2019 and April 30, 2019, the unamortized amount offset against outstanding debt was $196,675 and $209,162 , respectively.  On March 15, 2019, the Company’s wholly-owned subsidiary, SigmaTron Electronic Technology Co., Ltd., entered into a credit facility with China Construction Bank. Under the agreement SigmaTron Electronic Technology Co., Ltd. can borrow up to 5,000,000 Renminbi, approximately $726,000 as of July 31, 2019, 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 6.09% . The term of the facility extends to March 14, 2024 . There was no outstanding balance under the facility at July 31, 2019 and April 30, 2019.  The Company is in compliance with its financial covenant and other restrictive covenants and anticipates that its credit facilities, expected future cash flows from operations and leasing resources are adequate to meet its working capital requirements, and fund capital expenditures for the next 12 months. In addition, if customers delay orders, future payments are not made timely, the Company desires to expand its operations, its business grows more rapidly than expected, or the current economic climate deteriorates, additional financing resources may be necessary. There is no assurance that the Company will be able to obtain equity or debt financing at acceptable terms, or at all, in the future. There is no assurance that the Company will be able to retain or renew its credit agreements in the future, or that any retention or renewal will be on the same terms as currently exist.  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 requires the Company to pay monthly principal payments in the amount of $17,333 , bears interest at a fixed rate of 4.0% per year and is payable over a fifty-one month period. Deferred financing costs of $74,066 were capitalized in fiscal year 2018 which are amortized over the term of the agreement. As Note E - Long-term Debt - Continued  of July 31, 2019 and April 30, 2019, the unamortized amount included as a reduction to long-term debt was $45,746 and $49,852 , respectively. A final payment of approximately $4,347,778 is due on or before March 31, 2022 . The outstanding balance was $4,888,000 and $4,940,000 at July, 31 2019 and April 30, 2019, respectively.  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 requires the Company to pay monthly principal payments in the amount of $6,000 , bears interest at a fixed rate of 4.0% per year and is payable over a fifty-one month period. Deferred financing costs of $65,381 were capitalized in the fiscal year 2018 which are amortized over the term of the agreement. As of July 31, 2019 and April 30, 2019, the unamortized amount included as a reduction to long-term debt was $40,234 and $44,006 , respectively. A final payment of approximately $1,505,000 is due on or before March 31, 2022 . The outstanding balance was $1,692,000 and $1,710,000 at July, 31 2019 and April 30, 2019, respectively.  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 extend to 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% .  Annual maturities of the Company’s debt, net of deferred financing fees for the remaining periods as of July 31, 2019, are as follows:     Fiscal Year Bank Building Equipment Total   2020 $ - $ 210,000 $ 308,775 $ 518,775  2021 - 280,000 411,701 691,701  2022 33,475,011 6,004,020 381,852 39,860,883  2023 - - 114,372 114,372  2024 - - 9,128 9,128  $ 33,475,011 $ 6,494,020 $ 1,225,828 $ 41,194,859     Note E - Long-term Debt - Continued  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 January 2023 , with monthly installment payments ranging from $1,455 to $40,173 and a fixed interest rate ranging from 3.75% to 8.00% . 

Income Tax

Income Tax	3 Months Ended
	Jul. 31, 2019
Income Tax [Abstract]
Income Tax	Note F - Income Tax  The income tax expense was $247,115 for the three month period ended July 31, 2019 compared to an income tax benefit of $197,006 for the same period in the prior fiscal year. The Company’s effective tax rate was 40.63% and 27.22% for the quarters ended July 31, 2019 and 2018, respectively. The increase in income tax expense for the three month period ended July 31, 2019 compared to the benefit recognized for the same period in the previous year is due to operating income recognized in the current period as opposed to a loss recognized in the same period in the previous year. The increase in effective tax rate is due primarily to the operating loss recognized in China and Vietnam in the current period for which no tax benefit is recorded due to a full valuation allowance. 

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Jul. 31, 2019
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. 

Critical Accounting Policies

Critical Accounting Policies	3 Months Ended
	Jul. 31, 2019
Critical Accounting Policies [Abstract]
Critical Accounting Policies	Note H - Critical 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 market adjustment for inventory, contingent consideration, deferred taxes, uncertain tax positions, valuation allowance for deferred taxes and valuation of long-lived assets. Actual results could materially differ from these estimates.  Revenue Recognition - The following table presents the Company’s revenue disaggregated by the principal end-user markets it serves:     Three Months Ended July 31, Three Months Ended July 31,  Net trade sales by end-market 2019 2018  Industrial Electronics 42,848,712 38,135,102  Consumer Electronics 26,659,187 29,200,913  Medical / Life Sciences 4,502,082 4,078,042  Total Net Trade Sales 74,009,981 71,414,057   During the three month period ending July 31, 2019, 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 July 31, 2019. 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 July 31, 2019, 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 Note H - Critical Accounting Policies - Continued  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 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 $1,349,098 and $1,294,605 as of July 31, 2019 and April 30, 2019, respectively.  Revisions - Previously reported cash flows from financing activities for the three-month period ended July 31, 201 8 have been revised to reflect the classification of payments and borrowings under the Company’s revolving line of credit presented in the condensed consolidated statement of cash flows. The revision had no impact to total cash flows from financing activities, net loss or net loss per share, or the condensed consolidated balance sheets or statements of operations or stockholders’ equity. See Note B, “Summary of Significant Accounting Policies” in the Company’s 2019 10-K for additional information on these revisions.  New Accounting Standards:  In February 2016, the FASB issued ASU 2016-02, as amended, Leases (Topic 842), which requires a lessee to record a right-of-use asset and a lease liability for all leases with a term greater than twelve months regardless of whether the lease is classified as an operating lease or a financing lease.  Effective May 1, 2019, the Company adopted the new standard under the modified retrospective approach, applying the current-period adjustment method. Under the transition guidance of the modified retrospective approach there are a number of optional practical expedients made available to simplify the transition of the new standard. The Company has elected the following:  · The condensed consolidated balance sheets for reporting periods beginning on or after May 1, 2019 are presented under the new guidance, while prior period amounts are not adjusted and continue to be reported in accordance with ASC Topic 840, Leases . The Company recognized a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption of $5. · The Company has elected to utilize the package of practical expedients permitted under the transition guidance in the standard, which allowed the Company to not reassess (i) whether any expired or existing contracts contain leases, (ii) historical lease classification, and (iii) initial direct costs. · The Company has elected to combine lease and non-lease components as a single component for all asset classes. · The Company has elected to not assess whether existing or expired land easements that were not previously accounted for as leases under Topic 840 are or contain a lease under this Topic. · The Company has elected to keep leases with an initial term of 12 months or less off of the balance sheet. Note H - Critical Accounting Policies - Continued  Upon adoption, the Company recorded Right-of-use ("ROU") assets and lease liabilities relating to operating leases of $6,017,771 and $6,290,289 , respectively. The changes did not have a material impact on our results of operations or cash flows. The discount rates used to calculate the ROU assets and lease liabilities as of the effective date were based on the remaining lease terms as of the effective date. See Note J - Leases, for the impact on the financial statements and related disclosures from the adoption of this standard.  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 public business entities, ASU 2016-13 is effective for annual and interim reporting periods beginning after December 15, 2019, 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. 

Related Parties

Related Parties	3 Months Ended
	Jul. 31, 2019
Related Parties [Abstract]
Related Parties	Note I - Related Parties  In March, 2015, two of the Company’s executive officers invested in a start-up customer, Petzila, Inc. (“Petzila”). The executive officers’ investments constituted less than 2% (individually and in aggregate) of the outstanding beneficial ownership of Petzila, according to information provided by Petzila to the executive officers.  On April 30, 2018, the Company foreclosed on its security interest and held a public sale of the assets in accordance with the requirements of Article 9 of the California Uniform Commercial Code. The Company acquired all of the assets of Petzila as the winning bidder at the public sale by a credit bid of $3,500,000 , the aggregate amount of Petzila’s liability to the company. Concurrent with the foreclosure sale, the Company entered into an Asset Purchase Agreement with Wagz, Inc. (“Wagz”), “an unrelated party,” whereby the Company sold the assets to Wagz for $350,000 cash, 600,000 shares of Wagz common stock and an earn-out based on sales by Wagz generated from use of the assets through July 31, 2022 . The earn-out is $6.00 per unit of a product specified in the asset purchase agreement and any upgrade to such product.  The fair value of the non-cash consideration consisted of $600,000 for the 600,000 shares of Wagz common stock which is recorded within other assets. The Company determined the fair value of the equity using the price per common share received by Wagz in a recent financing transaction, a level 3 input. The Company did not assign any value to the earn-out because any receipts from the earn-out are highly uncertain and contingent upon Wagz selling the product specified in the asset purchase agreement between the Company and Wagz.

Leases

Leases	3 Months Ended
	Jul. 31, 2019
Leases [Abstract]
Leases	Note J - 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 at 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 amortiza tion, 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 J - Leases - Continued  The following table presents lease assets and liabilities and their balance sheet classification:   July 31,  Classification 2019  Operating Leases:  Right-of-use Assets Other assets $ 5,485,353  Operating lease current liabilities Current portion of operating lease obligations 2,049,962  Operating lease noncurrent liabilities Operating lease obligations, less current portion 3,692,295  Finance Leases:  Right-of-use Assets Property, plant and equipment 10,506,242  Finance lease current liabilities Current portion of finance lease obligations 1,821,341  Finance lease noncurrent liabilities Finance lease obligations, less current portion 2,368,517  The components of lease expense for the three month period ended July 31, 2019, are as follows:     Three Months  Ended  July 31,  Classification 2019  Operating Leases:  Operating lease cost Operating expenses 594,494  Variable lease cost Operating expenses 73,897  Short term lease cost Operating expenses 1,350  Finance Leases:  Amortization of right-of-use assets Operating expenses 347,375  Interest expense Interest expense 67,786  Total 1,084,902  The weighted average lease term and discount rates are as follows:     July 31,  2019  Operating Leases:  Weighted average remaining lease term (months) 41.10  Weighted average discount rate 3.8%  Finance Leases:  Weighted average remaining lease term (months) 28.63  Weighted average discount rate 5.9%  Note J - Leases - Continued  Future payments due under leases reconciled to lease liabilities are as follows:     Finance Leases Operating Leases  For the remaining 9 months of the fiscal year ending April 30:  2020 $ 1,535,763 $ 1,847,153  For the fiscal years ending April 30:  2021 1,792,747 2,243,547  2022 1,049,198 1,289,278  2023 133,819 1,136,290  2024 - 698,778  Thereafter - 180,288  Total undiscounted lease payments 4,511,527 7,395,334  Present value discount, less interest 321,669 1,653,077  Lease liability $ 4,189,858 $ 5,742,257  Supplemental disclosures of cash flow information related to leases are as follows:     Three Months  Ended  July 31,  Other Information 2019  Cash paid for amounts included in the measurement of lease liabilities  Operating cash flows from finance leases 67,786  Operating cash flows from operating leases 62,155  Financing cash flows from finance leases 612,300  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 -  Right-of-use assets obtained in exchange for operating lease liabilities - 

Critical Accounting Policies (P

Critical Accounting Policies (Policy)	3 Months Ended
	Jul. 31, 2019
Critical 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 market adjustment for inventory, contingent consideration, deferred taxes, uncertain tax positions, valuation allowance for deferred taxes and valuation of long-lived assets. Actual results could materially differ from these estimates.
Revenue Recognition	Revenue Recognition - The following table presents the Company’s revenue disaggregated by the principal end-user markets it serves:     Three Months Ended July 31, Three Months Ended July 31,  Net trade sales by end-market 2019 2018  Industrial Electronics 42,848,712 38,135,102  Consumer Electronics 26,659,187 29,200,913  Medical / Life Sciences 4,502,082 4,078,042  Total Net Trade Sales 74,009,981 71,414,057   During the three month period ending July 31, 2019, 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 July 31, 2019. 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 July 31, 2019, 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 Note H - Critical Accounting Policies - Continued  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 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 $1,349,098 and $1,294,605 as of July 31, 2019 and April 30, 2019, respectively.
Revisions	Revisions - Previously reported cash flows from financing activities for the three-month period ended July 31, 201 8 have been revised to reflect the classification of payments and borrowings under the Company’s revolving line of credit presented in the condensed consolidated statement of cash flows. The revision had no impact to total cash flows from financing activities, net loss or net loss per share, or the condensed consolidated balance sheets or statements of operations or stockholders’ equity. See Note B, “Summary of Significant Accounting Policies” in the Company’s 2019 10-K for additional information on these revisions.
New Accounting Standards	New Accounting Standards:  In February 2016, the FASB issued ASU 2016-02, as amended, Leases (Topic 842), which requires a lessee to record a right-of-use asset and a lease liability for all leases with a term greater than twelve months regardless of whether the lease is classified as an operating lease or a financing lease.  Effective May 1, 2019, the Company adopted the new standard under the modified retrospective approach, applying the current-period adjustment method. Under the transition guidance of the modified retrospective approach there are a number of optional practical expedients made available to simplify the transition of the new standard. The Company has elected the following:  · The condensed consolidated balance sheets for reporting periods beginning on or after May 1, 2019 are presented under the new guidance, while prior period amounts are not adjusted and continue to be reported in accordance with ASC Topic 840, Leases . The Company recognized a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption of $5. · The Company has elected to utilize the package of practical expedients permitted under the transition guidance in the standard, which allowed the Company to not reassess (i) whether any expired or existing contracts contain leases, (ii) historical lease classification, and (iii) initial direct costs. · The Company has elected to combine lease and non-lease components as a single component for all asset classes. · The Company has elected to not assess whether existing or expired land easements that were not previously accounted for as leases under Topic 840 are or contain a lease under this Topic. · The Company has elected to keep leases with an initial term of 12 months or less off of the balance sheet. Note H - Critical Accounting Policies - Continued  Upon adoption, the Company recorded Right-of-use ("ROU") assets and lease liabilities relating to operating leases of $6,017,771 and $6,290,289 , respectively. The changes did not have a material impact on our results of operations or cash flows. The discount rates used to calculate the ROU assets and lease liabilities as of the effective date were based on the remaining lease terms as of the effective date. See Note J - Leases, for the impact on the financial statements and related disclosures from the adoption of this standard.  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 public business entities, ASU 2016-13 is effective for annual and interim reporting periods beginning after December 15, 2019, 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.

Inventories, Net (Tables)

Inventories, Net (Tables)	3 Months Ended
	Jul. 31, 2019
Inventories, Net [Abstract]
Components Of Inventory	   July 31, April 30,  2019 2019   Finished products $ 22,414,687 $ 20,682,669  Work-in-process 2,955,440 3,037,810  Raw materials 50,192,856 63,203,068  75,562,983 86,923,547  Less excess and obsolescence reserve (1,307,972) (1,343,972)  $ 74,255,011 $ 85,579,575 

Earnings Per Share And Stockh_2

Earnings Per Share And Stockholders' Equity (Tables)	3 Months Ended
	Jul. 31, 2019
Earnings Per Share And Stockholders' Equity [Abstract]
Computation Of Basic And Diluted Earnings (Loss) Per Share	  Three Months Ended  July 31,  2019 2018   Net income (loss) $ 361,025 $ (526,607)  Weighted-average shares  Basic 4,241,883 4,223,657  Effect of dilutive stock options - -   Diluted 4,241,883 4,223,657   Basic earnings (loss) per share $ 0.09 $ (0.12)   Diluted earnings (loss) per share $ 0.09 $ (0.12) 

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Jul. 31, 2019
Long-Term Debt [Abstract]
Schedule of Debt and Capital Lease Obligations	  July 31, April 30,  2019 2019   Debt:  Notes Payable - Banks $ 33,671,686 $ 35,727,212  Notes Payable - Buildings 6,580,000 6,650,000  Notes Payable - Equipment 1,225,828 1,328,753  Unamortized deferred financing costs (282,655) (303,310)  Total debt 41,194,859 43,402,655  Less current maturities 691,701 691,701  Long-term debt $ 40,503,158 $ 42,710,954   Finance lease and sale leaseback obligations $ 4,189,858 $ 4,802,158  Less current maturities 1,821,341 1,939,374  Total finance lease obligations, less current portion $ 2,368,517 $ 2,862,784 
Aggregate Amount of Debt, Net Deferred Financing Fees	  Fiscal Year Bank Building Equipment Total   2020 $ - $ 210,000 $ 308,775 $ 518,775  2021 - 280,000 411,701 691,701  2022 33,475,011 6,004,020 381,852 39,860,883  2023 - - 114,372 114,372  2024 - - 9,128 9,128  $ 33,475,011 $ 6,494,020 $ 1,225,828 $ 41,194,859  

Critical Accounting Policies (T

Critical Accounting Policies (Tables)	3 Months Ended
	Jul. 31, 2019
Critical Accounting Policies [Abstract]
Revenue Disaggregated By Principal End-User Markets	  Three Months Ended July 31, Three Months Ended July 31,  Net trade sales by end-market 2019 2018  Industrial Electronics 42,848,712 38,135,102  Consumer Electronics 26,659,187 29,200,913  Medical / Life Sciences 4,502,082 4,078,042  Total Net Trade Sales 74,009,981 71,414,057  

Lease (Tables)

Lease (Tables)	3 Months Ended
	Jul. 31, 2019
Leases [Abstract]
Lease Assets And Liabilities Related To Balance Sheet Classification	  July 31,  Classification 2019  Operating Leases:  Right-of-use Assets Other assets $ 5,485,353  Operating lease current liabilities Current portion of operating lease obligations 2,049,962  Operating lease noncurrent liabilities Operating lease obligations, less current portion 3,692,295  Finance Leases:  Right-of-use Assets Property, plant and equipment 10,506,242  Finance lease current liabilities Current portion of finance lease obligations 1,821,341  Finance lease noncurrent liabilities Finance lease obligations, less current portion 2,368,517 
Components Of Lease Expense	  Three Months  Ended  July 31,  Classification 2019  Operating Leases:  Operating lease cost Operating expenses 594,494  Variable lease cost Operating expenses 73,897  Short term lease cost Operating expenses 1,350  Finance Leases:  Amortization of right-of-use assets Operating expenses 347,375  Interest expense Interest expense 67,786  Total 1,084,902 
Weighted Average Lease Term And Discount Rate	  July 31,  2019  Operating Leases:  Weighted average remaining lease term (months) 41.10  Weighted average discount rate 3.8%  Finance Leases:  Weighted average remaining lease term (months) 28.63  Weighted average discount rate 5.9% 
Future Payments Due Under Finance And Operating Leases	  Finance Leases Operating Leases  For the remaining 9 months of the fiscal year ending April 30:  2020 $ 1,535,763 $ 1,847,153  For the fiscal years ending April 30:  2021 1,792,747 2,243,547  2022 1,049,198 1,289,278  2023 133,819 1,136,290  2024 - 698,778  Thereafter - 180,288  Total undiscounted lease payments 4,511,527 7,395,334  Present value discount, less interest 321,669 1,653,077  Lease liability $ 4,189,858 $ 5,742,257 
Supplemental Cash Flow Information Related To Leases	  Three Months  Ended  July 31,  Other Information 2019  Cash paid for amounts included in the measurement of lease liabilities  Operating cash flows from finance leases 67,786  Operating cash flows from operating leases 62,155  Financing cash flows from finance leases 612,300  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 -  Right-of-use assets obtained in exchange for operating lease liabilities - 

Description Of The Business (Na

Description Of The Business (Narrative) (Details)	3 Months Ended
	Jul. 31, 2019segment
Description Of Business [Abstract]
Number of business segments as an independent provider of electronic manufacturing services	1

Inventories, Net (Components Of

Inventories, Net (Components Of Inventory) (Details) - USD ($)	Jul. 31, 2019	Apr. 30, 2019
Inventories, Net [Abstract]
Finished products	$ 22,414,687	$ 20,682,669
Work-in-process	2,955,440	3,037,810
Raw materials	50,192,856	63,203,068
Total inventory, gross	75,562,983	86,923,547
Less excess and obsolescence reserve	(1,307,972)	(1,343,972)
Total inventory, net	$ 74,255,011	$ 85,579,575

Earnings Per Share And Stockh_3

Earnings Per Share And Stockholders' Equity (Narrative) (Details) - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Earnings Per Share And Stockholders' Equity [Abstract]
Common stock shares were outstanding	465,232	347,318
Options granted	0	0
Stock option expense	$ 0	$ 0
Balance of unrecognized compensation expense related to stock options plans	$ 0	$ 0
Anti-dilutive common stock outstanding excluded from the calculation of diluted earnings per share	424,484	0

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
	Jul. 31, 2019	Jul. 31, 2018
Earnings Per Share And Stockholders' Equity [Abstract]
Net income (loss)	$ 361,025	$ (526,607)
Weighted-average shares, Basic	4,241,883	4,223,657
Weighted-average shares, Diluted	4,241,883	4,223,657
Basic loss per share	$ 0.09	$ (0.12)
Diluted loss per share	$ 0.09	$ (0.12)

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details)

Aug. 26, 2019

Mar. 22, 2019

Jul. 16, 2018USD ($)

Dec. 21, 2017USD ($)

Jul. 16, 2017USD ($)

Mar. 31, 2017USD ($)

Mar. 31, 2017USD ($)

Jul. 31, 2019USD ($)

Apr. 30, 2019USD ($)

Mar. 15, 2019CNY (¥)

Dec. 13, 2018USD ($)

Apr. 30, 2018USD ($)

U.S. Bank [Member] | Notes Payable - Banks [Member] | Corporate Headquarters And Manufacturing Facility [Member]

Debt Instrument [Line Items]

Mortgage agreement, outstanding amount

$ 4,888,000

$ 4,940,000

U.S. Bank [Member] | Notes Payable - Buildings [Member] | Corporate Headquarters And Manufacturing Facility [Member]

Debt Instrument [Line Items]

Deferred financing costs

$ 74,066

Unamortized amount offset against outstanding debt

45,746

49,852

Mortgage agreement, amount

$ 5,200,000

Mortgage agreement, interest rate

4.00%

Mortgage agreement, final payment

$ 4,347,778

Mortgage agreement, maturity date

Mar. 31, 2022

Mortgage agreement, monthly principal payment

$ 17,333

Mortgage agreement, payable period

51 months

U.S. Bank [Member] | Notes Payable - Buildings [Member] | Engineering And Design Center [Member]

Debt Instrument [Line Items]

Deferred financing costs

$ 65,381

Unamortized amount offset against outstanding debt

$ 40,234

44,006

Mortgage agreement, amount

$ 1,800,000

Mortgage agreement, interest rate

4.00%

Mortgage agreement, final payment

1,505,000

Mortgage agreement, outstanding amount

$ 1,692,000

1,710,000

Mortgage agreement, maturity date

Mar. 31, 2022

Mortgage agreement, monthly principal payment

$ 6,000

Mortgage agreement, payable period

51 months

U.S. Bank [Member] | Senior Secured Credit Facility [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Credit facility credit limit

$ 35,000,000

$ 35,000,000

Expiration date

Mar. 31, 2022

Fixed interest rate

5.00%

5.00%

Effective interest rate

3.81%

Deferred financing costs

$ 5,959

Unamortized amount offset against outstanding debt

196,675

209,162

Outstanding balance under the credit facility

33,671,686

35,727,212

Unused availability under the credit facility

$ 8,993,594

6,645,730

U.S. Bank [Member] | Senior Secured Credit Facility [Member] | LIBOR [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Variable interest rate

1.50%

U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Credit facility credit limit

$ 45,000,000

Borrowing base percentage

90.00%

Number of days in measuring borrowing base requirements

90 days

Borrowing base minimum requirement

80.00%

Sublimits on raw materials

$ 10,500,000

Sublimits on finished goods

$ 10,000,000

Sublimits on all eligible inventory

$ 28,000,000

U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member] | Revolving Line Cap Until August 1, 2019 [Member]

Debt Instrument [Line Items]

Borrowing base percentage

95.00%

U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member] | Revolving Line Cap On And After August 1, 2019 [Member]

Debt Instrument [Line Items]

Borrowing base minimum requirement

90.00%

U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member] | Revolving Line Cap Until February 26, 2020 [Member]

Debt Instrument [Line Items]

Borrowing base percentage

95.00%

U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member] | Revolving Line Cap On And After February 26, 2020 [Member]

Debt Instrument [Line Items]

Borrowing base minimum requirement

90.00%

Minimum [Member] | Finance Lease And Sales Leaseback Agreements [Member]

Debt Instrument [Line Items]

Fixed interest rate

3.75%

Installment payments under secured note agreements

$ 1,455

Minimum [Member] | U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Fixed charge coverage ratio

1.00%

Minimum [Member] | Engencap Fin S.A. DE C.V. [Member] | Notes Payable - Equipment [Member] | Equipment [Member]

Debt Instrument [Line Items]

Fixed interest rate

6.65%

Term extended agreement date

Nov. 1, 2021

Installment payments under secured note agreements

$ 11,045

Maximum [Member] | Finance Lease And Sales Leaseback Agreements [Member]

Debt Instrument [Line Items]

Fixed interest rate

8.00%

Term extended agreement date

Jan. 1, 2023

Installment payments under secured note agreements

$ 40,173

Maximum [Member] | U.S. Bank [Member] | Revolving Line Cap [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Fixed charge coverage ratio

1.20%

Maximum [Member] | Engencap Fin S.A. DE C.V. [Member] | Notes Payable - Equipment [Member] | Equipment [Member]

Debt Instrument [Line Items]

Fixed interest rate

8.00%

Term extended agreement date

May 1, 2023

Installment payments under secured note agreements

$ 37,941

Foreign Subsidiaries [Member] | Maximum [Member] | U.S. Bank [Member] | Credit Facility [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Credit facility credit limit

$ 3,000,000

SigmaTron Electronic Technology Co [Member] | China Construction Bank [Member] | Credit Facility [Member] | Notes Payable - Banks [Member]

Debt Instrument [Line Items]

Credit facility credit limit

$ 726,000

¥ 5,000,000

Fixed interest rate

6.09%

Outstanding balance under the credit facility

$ 0

$ 0

Term extended agreement date

Mar. 14, 2024

Long-Term Debt (Schedule of Deb

Long-Term Debt (Schedule of Debt and Capital Lease Obligations) (Details) - USD ($)	Jul. 31, 2019	Apr. 30, 2019
Debt Instrument [Line Items]
Unamortized deferred financing costs	$ (282,655)	$ (303,310)
Total debt	41,194,859	43,402,655
Less current maturities	691,701	691,701
Long-term debt	40,503,158	42,710,954
Finance lease and sale leaseback obligations	4,189,858	4,802,158
Less current maturities	1,821,341	1,939,374
Total finance lease obligations, less current portion	2,368,517	2,862,784
Notes Payable - Banks [Member]
Debt Instrument [Line Items]
Debt	33,671,686	35,727,212
Total debt	33,475,011
Notes Payable - Buildings [Member]
Debt Instrument [Line Items]
Debt	6,580,000	6,650,000
Total debt	6,494,020
Notes Payable - Equipment [Member]
Debt Instrument [Line Items]
Debt	1,225,828	$ 1,328,753
Total debt	$ 1,225,828

Long-Term Debt (Aggregate Amoun

Long-Term Debt (Aggregate Amount of Debt, Net Deferred Financing Fees) (Details) - USD ($)	Jul. 31, 2019	Apr. 30, 2019
2020	$ 518,775
2021	691,701
2022	39,860,883
2023	114,372
2024	9,128
Total debt	41,194,859	$ 43,402,655
Notes Payable - Banks [Member]
2022	33,475,011
Total debt	33,475,011
Notes Payable - Buildings [Member]
2020	210,000
2021	280,000
2022	6,004,020
Total debt	6,494,020
Notes Payable - Equipment [Member]
2020	308,775
2021	411,701
2022	381,852
2023	114,372
2024	9,128
Total debt	$ 1,225,828

Income Tax (Narrative) (Details

Income Tax (Narrative) (Details) - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Income Tax [Line Items]
Income tax expense (benefit)	$ 247,115	$ (197,006)
Effective income tax rate	40.63%	27.22%
Foreign [Member]
Income Tax [Line Items]
Operating loss carryforwards, valuation allowance	$ 0

Critical Accounting Policies (N

Critical Accounting Policies (Narrative) (Details) - USD ($)	Jul. 31, 2019	May 01, 2019	Apr. 30, 2019
Critical Accounting Policies [Abstract]
Performance obligations remain unsatisfied or partially unsatisfied	$ 0
Valuation allowances	1,349,098		$ 1,294,605
Cumulative effect adjustment for the adoption of Topic 842	5
ROU operating lease assets	5,485,353	$ 6,017,771
ROU operating lease liabilities	$ 5,742,257	$ 6,290,289

Critical Accounting Policies (R

Critical Accounting Policies (Revenue Disaggregated By Principal End-User Markets) (Details) - USD ($)	3 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 74,009,981	$ 71,414,057
Industrial Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	42,848,712	38,135,102
Consumer Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	26,659,187	29,200,913
Medical / Life Sciences [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 4,502,082	$ 4,078,042

Related Parties (Narrative) (De

Related Parties (Narrative) (Details)	Apr. 30, 2018USD ($)$ / sharesshares	Jul. 31, 2019USD ($)	Mar. 31, 2015employee
Related Party Transaction [Line Items]
Amount owed by Petzila	$ 3,500,000
Cash from sold assets to Wagz	$ 350,000
Fair value of non-cash consideration		$ 600,000
Executive [Member]
Related Party Transaction [Line Items]
Number of executive officers invested in a start-up customer | employee			2
Maximum [Member] | Executive [Member]
Related Party Transaction [Line Items]
Executive officers' investment holding, percentage			2.00%
Wagz [Member]
Related Party Transaction [Line Items]
Asset Purchase Agreement end date	Jul. 31, 2022
Asset Purchase Agreement earn-out | $ / shares	$ 6
Common Class C [Member] | Wagz [Member]
Related Party Transaction [Line Items]
Shares acquired from Asset Purchase Agreement | shares	600,000

Leases (Narratives) (Details)

Leases (Narratives) (Details)	Jul. 31, 2019
Minimum [Member]
Lessee, Lease, Description [Line Items]
Operating leases, term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Operating leases, term	5 years

Leases (Lease Assets And Liabil

Leases (Lease Assets And Liabilities Related To Balance Sheet Classification) (Details) - USD ($)	Jul. 31, 2019	May 01, 2019	Apr. 30, 2019
Leases [Abstract]
Operating Leases: Right-of-use Assets	$ 5,485,353	$ 6,017,771
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Operating lease current liabilities	$ 2,049,962
Operating lease noncurrent liabilities	3,692,295
Finance Leases: Right-of-use Assets	$ 10,506,242
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet
Finance lease current liabilities	$ 1,821,341		$ 1,939,374
Finance lease noncurrent liabilities	$ 2,368,517		$ 2,862,784

Leases (Components Of Lease Exp

Leases (Components Of Lease Expense) (Details)	3 Months Ended
	Jul. 31, 2019USD ($)
Total	$ 1,084,902
Operating Expense [Member]
Operating lease cost	594,494
Variable lease cost	73,897
Short term lease cost	1,350
Amortization of right-of-use assets	347,375
Interest Expense [Member]
Interest expense	$ 67,786

Leases (Weighted Average Lease

Leases (Weighted Average Lease Term And Discount Rate) (Details)	Jul. 31, 2019
Leases [Abstract]
Operating Leases: Weighted average remaining lease term (months)	41 months 3 days
Operating Leases: Weighted average discount rate	3.80%
Finance Leases: Weighted average remaining lease term (months)	28 months 19 days
Finance Leases: Weighted average discount rate	5.90%

Leases (Future Payments Due Und

Leases (Future Payments Due Under Finance And Operating Leases) (Details) - USD ($)	Jul. 31, 2019	May 01, 2019	Apr. 30, 2019
Finance Leases
For the remaining 9 months of the fiscal year ending April 30: 2020	$ 1,535,763
For the fiscal year ending April 30: 2021	1,792,747
For the fiscal year ending April 30: 2022	1,049,198
For the fiscal year ending April 30: 2023	133,819
For the fiscal year ending April 30: 2024
Thereafter
Total undiscounted lease payments	4,511,527
Present value discount, less interest	321,669
Lease liability	4,189,858		$ 4,802,158
Operating Leases
For the remaining 9 months of the fiscal year ending April 30: 2020	1,847,153
For the fiscal year ending April 30: 2021	2,243,547
For the fiscal year ending April 30: 2022	1,289,278
For the fiscal year ending April 30: 2023	1,136,290
For the fiscal year ending April 30: 2024	698,778
Thereafter	180,288
Total undiscounted lease payments	7,395,334
Present value discount, less interest	1,653,077
Lease liability	$ 5,742,257	$ 6,290,289

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow Information Related To Leases) (Details)	3 Months Ended
	Jul. 31, 2019USD ($)
Leases [Abstract]
Operating cash flows from finance leases	$ 67,786
Operating cash flows from operating leases	62,155
Financing cash flows from finance leases	612,300
Right-of-use assets obtained in exchange for new finance lease liabilities
Right-of-use assets obtained in exchange for operating lease liabilities