SigmaTron International (SGMA) 10-Q 16 Mar 15 2015 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Jan. 31, 2015	Mar. 12, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Jan-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Trading Symbol	sgma
Entity Registrant Name	SIGMATRON INTERNATIONAL INC
Entity Central Index Key	915358
Current Fiscal Year End Date	-26
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		4,058,737

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jan. 31, 2015	Apr. 30, 2014
Current assets:
Cash	$2,267,284	$5,440,319
Accounts receivable, less allowance for doubtful accounts of $189,000 and $150,000 at January 31, 2015 and April 30, 2014	18,604,517	19,293,791
Inventories, net	68,646,204	53,728,377
Prepaid expenses and other assets	2,379,021	1,826,254
Refundable income taxes	354,461
Deferred income taxes	2,557,788	2,524,993
Other receivables	492,768	356,746
Total current assets	95,302,043	83,170,480
Property, machinery and equipment, net	33,712,993	32,692,908
Intangible assets, net of amortization of $3,628,824 and $3,309,246 at January 31, 2015 and April 30, 2014	5,283,176	5,602,754
Goodwill	3,222,899	3,222,899
Other assets	1,224,546	790,390
Total other long-term assets	9,730,621	9,616,043
Total assets	138,745,657	125,479,431
Current liabilities:
Trade accounts payable	34,357,440	27,141,079
Accrued wages	3,460,584	4,027,029
Accrued expenses	2,526,974	2,526,045
Income taxes payable		80,936
Current portion of long-term debt	165,000	2,126,017
Current portion of capital lease obligations	1,231,092	765,961
Current portion of contingent consideration	275,288	331,429
Current portion of deferred rent	144,574	12,302
Total current liabilities	42,160,952	37,010,798
Long-term debt, less current portion	30,388,099	24,198,500
Capital lease obligations, less current portion	3,739,626	2,423,001
Contingent consideration, less current portion	1,288,697	1,533,571
Deferred rent, less current portion	1,043,074	1,163,819
Other long-term liabilities	528,336	525,739
Deferred income taxes	3,217,660	3,217,660
Total long-term liabilities	40,205,492	33,062,290
Total liabilities	82,366,444	70,073,088
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, 4,058,737 and 4,012,319 shares issued and outstanding at January 31, 2015 and April 30, 2014	40,620	40,215
Capital in excess of par value	21,109,643	20,864,497
Retained earnings	35,228,950	34,501,631
Total stockholders' equity	56,379,213	55,406,343
Total liabilities and stockholders' equity	$138,745,657	$125,479,431

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jan. 31, 2015	Apr. 30, 2014
Consolidated Balance Sheets [Abstract]
Accounts receivable, Allowance for doubtful accounts	$189,000	$150,000
Intangible assets, Amortization	$3,628,824	$3,309,246
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	4,058,737	4,012,319
Common stock, shares outstanding	4,058,737	4,012,319

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Consolidated Statements Of Operations [Abstract]
Net sales	$53,702,613	$54,175,196	$170,183,609	$166,918,544
Cost of products sold	48,007,248	49,357,816	153,928,043	149,816,620
Gross profit	5,695,365	4,817,380	16,255,566	17,101,924
Selling and administrative expenses	4,907,243	4,725,540	14,269,255	14,420,852
Operating income	788,122	91,840	1,986,311	2,681,072
Other income	-36,164	-35,076	-111,858	-86,048
Interest expense	262,163	257,098	797,226	707,152
Income from operations before income tax expense	562,123	-130,182	1,300,943	2,059,968
Income tax (benefit) expense	-1,957	-873,976	573,624	-435,944
Net income	$564,080	$743,794	$727,319	$2,495,912
Earnings per share - basic	$0.14	$0.19	$0.18	$0.63
Earnings per share - diluted	$0.14	$0.18	$0.18	$0.62
Weighted average shares of common stock outstanding Basic	4,054,146	3,966,814	4,042,307	3,963,093
Weighted average shares of common stock outstanding Diluted	4,116,015	4,088,695	4,121,657	4,055,898

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Cash flows from operating activities
Net income	$727,319	$2,495,912
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation	3,718,753	3,602,726
Stock-based compensation	53,835	73,115
Amortization of intangibles	319,578	260,202
Restricted stock expense	42,431	32,016
Employee stock purchases	107,165
Provision for doubtful accounts	39,187
Provision for inventory obsolescence	75,279
Deferred income tax benefit	-32,795	-999,167
Loss from disposal or sale of machinery and equipment	51,896	29,725
Tender offer - stock options		300,410
Changes in assets and liabilities
Accounts receivable	650,087	-254,141
Inventories	-14,993,106	-5,547,737
Prepaid expenses and other assets	-1,122,945	782,749
Income taxes payable/refundable	-435,397	355,459
Trade accounts payable	7,216,361	-1,191,187
Deferred rent	11,527	62,005
Accrued expenses and wages	-863,934	-942,481
Net cash used in operating activities	-4,434,759	-940,394
Cash flows from investing activities
Purchases of machinery and equipment	-3,383,619	-7,857,691
Net cash used in investing activities	-3,383,619	-7,857,691
Cash flows from financing activities
Payment of tendered stock options		-300,410
Proceeds from the exercise of common stock options	42,121	65,158
Proceeds under sale leaseback agreements	1,102,317	2,281,354
Payments under capital lease and sale leaseback agreements	-727,677	-317,101
Proceeds under building notes payable	834,481	1,275,000
Payments under building notes payable	-116,748	-87,747
Borrowings under lines of credit	147,837,813	99,613,767
Payments under lines of credit	-144,326,964	-94,460,486
Net cash provided by financing activities	4,645,343	8,069,535
Change in cash	-3,173,035	-728,550
Cash at beginning of period	5,440,319	4,607,731
Cash at end of period	2,267,284	3,879,181
Supplementary disclosures of cash flow information
Cash paid for interest	756,618	639,629
Cash paid for income taxes	113,210	4,200
Cash refunded for income taxes		212,436
Purchase of machinery and equipment financed under capital leases	1,407,116
Purchase of machinery and equipment financed under sale leaseback agreements	$1,102,317	$2,281,354

Basis_Of_Presentation

Basis Of Presentation	9 Months Ended
	Jan. 31, 2015
Basis Of Presentation [Abstract]
Basis Of Presentation	Note A - Basis of Presentation
	The accompanying unaudited 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 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 periods ended January 31, 2015 are not necessarily indicative of the results that may be expected for the year ending April 30, 2015.  For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended April 30, 2014.

Inventories_Net

Inventories, Net	9 Months Ended
	Jan. 31, 2015
Inventories, Net [Abstract]
Inventories, Net	Note B - Inventories, net
	The components of inventory consist of the following:
		January 31,		April 30,
		2015		2014
	Finished products	$	26,009,524	$	18,553,112
	Work-in-process		2,946,616		3,126,596
	Raw materials		41,453,734		33,853,653
			70,409,874		55,533,361
	Less obsolescence reserve		1,763,670		1,804,984
		$	68,646,204	$	53,728,377

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Jan. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Note C - Earnings Per Share
	The following table sets forth the computation of basic and diluted earnings per share:
		Three Months Ended				Nine Months Ended
		January 31,				January 31,
		2015		2014		2015		2014
	Net income	$	564,080	$	743,794	$	727,319	$	2,495,912
	Weighted-average shares
	Basic		4,054,146		3,966,814		4,042,307		3,963,093
	Effect of dilutive stock options		61,869		121,881		79,350		92,805
	Diluted		4,116,015		4,088,695		4,121,657		4,055,898
	Basic earnings per share	$	0.14	$	0.19	$	0.18	$	0.63
	Diluted earnings per share	$	0.14	$	0.18	$	0.18	$	0.62
	Options to purchase 90,354 and 127,042 shares of common stock were outstanding at January 31, 2015 and 2014, respectively.  There were no options granted during the quarter ended January 31, 2015 and 2014.  The Company recognized $4,559 and $18,878 in stock option expense for the three month period ended January 31, 2015 and 2014, respectively.  There were no options granted during the nine month period ended January 31, 2015 and 20,000 options were granted during the nine month period ended January 31, 2014.  The Company recognized $27,491 and $52,976 in stock option expense for the nine months ended January 31, 2015 and 2014, respectively.  The balance of unrecognized compensation expense related to the Company’s stock option plans was $26,118 and $76,743 at January 31, 2015 and 2014, respectively.
	The Company issued 25,000 shares of restricted stock on June 1, 2012, of which 8,330 vested in June 2012, 8,330 vested in June 2013 and 8,340 vested in June 2014.  The Company recognized $0 and $3,362 in compensation expense for the three month period ended January 31, 2015 and 2014, respectively.  The Company recognized $1,746 and $11,960 in compensation expense for the nine month period ended January 31, 2015 and 2014, respectively.  There was no issuance of restricted stock to employees during the three and nine month periods ended January 31, 2015 and 2014, respectively.  The balance of unrecognized compensation expense related to the Company’s restricted stock award was $0 and $5,107 and at January 31, 2015 and 2014, respectively.
	Note C - Earnings Per Share - Continued
	On October 1, 2013, the Company granted 1,500 shares to each non-employee director pursuant to the 2013 Non-Employee Director Restricted Stock Plan.  A total of 7,500 restricted shares were granted and the shares vested six months from the date of grant.  The Company recognized no compensation expense for the three and nine month periods ended January 31, 2015.  The Company recognized $20,055 and $26,813 in compensation expense for the three and nine months ended January 31, 2014, respectively.  At January 31, 2015, there was no unrecognized compensation expense related to the issuance of those 7,500 shares of restricted stock.
	On October 1, 2014, the Company granted 1,750 shares to each non-employee director pursuant to the 2013 Non-Employee Director Restricted Stock Plan.  A total of 8,750 restricted shares were granted and the shares vest in six months from the date of grant.  The Company recognized $30,431 and $40,685 in compensation expense for the three and nine months, respectively, for the period ended January 31, 2015.  The balance of unrecognized compensation expense related to the 8,750 shares of restricted stock was $19,515 at January 31, 2015.
	The Company implemented an employee stock purchase plan (“ESPP”) for all eligible employees on February 1, 2014. The ESPP reserved 500,000 shares of common stock for issuance to employees.  In addition, the number of shares of common stock reserved for issuance under the plan automatically increases on the first day of the Company’s fiscal years by 25,000 shares.  For the three months ended January 31, 2015, 4,591 shares were issued under the ESPP and the Company recorded $6,469 in compensation expense.  For the nine months ended January 31, 2015, 14,220 shares were issued under the ESPP and the Company recorded $26,344 in compensation expense.  During the three and nine months ended January 31, 2015, the Company recorded $22,712 and $107,165, respectively, to stockholders’ equity relating to purchases under the ESPP.
	The Company offered to purchase 395,190 Eligible Options (as defined below) from  Eligible Holders (as defined below) upon the terms  stated in Schedule TO (“TO”) filed with the SEC on October 1, 2013.  The stock options subject to the TO were those options to purchase SGMA common stock which had not expired or terminated prior to October 29, 2013, having the grant dates and exercise prices set forth in the TO (the “Eligible Options”).  Eligible Options, all of which were fully vested, were granted under the following Company stock option plans: 1993 Stock Option Plan, 2004 Employee Stock Option Plan, 2000 Directors’ Stock Option Plan and 2004 Directors’ Stock Option Plan.
	“Eligible Holders” were: (a) those current or former employees, including all officers, who held Eligible Options as of October 29, 2013; and (b) all current or former directors of the Company, who held Eligible Options as of October 29, 2013.
	The Company offered to pay a cash amount ranging from $0.18 to $1.35 per Eligible Option, totaling up to $301,500, as specifically set forth in the TO.  Each Eligible Holder who participated in the TO received cash payment (subject to tax and other withholding for employees) for each properly tendered Eligible Option promptly following October 29, 2013.
	The Company made this offer subject to the terms and conditions stated in the TO and 394,200 Eligible Options were tendered and purchased for a total cash payment of $300,410 as of October 31, 2013.

Longterm_Debt

Long-term Debt	9 Months Ended
	Jan. 31, 2015
Long-term Debt [Abstract]
Long-term Debt	Note D - Long-term Debt
	The Company has a senior secured credit facility with Wells Fargo, N.A. with a credit limit up to $30,000,000 and initial term through September 30, 2013.  The facility allows the Company to choose among interest rates at which it may borrow funds.  The credit facility is collateralized by substantially all of the domestically located assets of the Company and the Company has pledged 65% of its equity ownership interest in some of its foreign entities.  The Company is required to be in compliance with several financial covenants.  During the quarter ended October 31, 2013, the Company renewed its senior secured credit facility.  The facility was revised to extend the term of the agreement to October 31, 2015.
	On October 31, 2014, the Company and Wells Fargo, N.A. extended the senior secured credit facility to October 31, 2017.  Pursuant to the agreement, financial covenants were amended, an unused line fee was added, and the borrowing interest rate was changed.  The facility allows the Company to choose among interest rates at which it may borrow funds.  The interest rate is the bank fixed rate of two and two quarter percent plus one percent (effectively 3.25% at January 31, 2015) or LIBOR plus two and one quarter percent (effectively 2.50% at January 31, 2015).  Interest is paid monthly.  Under the senior secured credit facility, the Company may borrow up to the lesser of (i) $30,000,000 or (ii) an amount equal to the sum of 85% of the receivable borrowing base plus a percentage of the inventory borrowing base, (collectively, “Borrowing Base”).  Further, in specific circumstances, the Company is entitled to an over advance of up to $5,000,000; however, at no time can the borrowings under the credit facility exceed $30,000,000.  The effective interest rate for the over advance facility is LIBOR plus two and three quarter percent.  Effective December 31, 2014, the Company amended its senior secured credit facility agreement to temporarily increase the total Borrowing Base limit to 60% through June 30, 2015 and reverting to 50% of total Borrowing Base post June 30, 2015.  Further, the senior secured credit facility agreement was modified to allow specific foreign receivables to become eligible collateral. The receivable modification is effective until June 30, 2015. The Company agreed to an increase in the effective interest rate for the over advance facility and a $5,000 amendment fee. The interest rate for the over advance facility increased from LIBOR plus two and three quarter percent (effectively 3.25% at January 31, 2015) or the bank fixed rate of two and two quarters percent plus one percent, (effectively 3.25%) at January 31, 2015 to LIBOR plus three and one half percent (effectively 4.0% at January 31, 2015) or the bank fixed rate of two and two quarters percent plus one percent, effectively 3.25%) at January 31, 2015.  As of January 31, 2015, there was a $26,510,849 outstanding balance and $3,489,151 of unused availability under the credit facility agreement.  At January 31, 2015, the Company was in compliance with its financial covenants.
	The Company entered into a mortgage agreement on January 8, 2010, in the amount of $2,500,000, with Wells Fargo, N.A. to refinance the property that serves as the Company’s corporate headquarters and its Illinois manufacturing facility.  The Wells Fargo, N.A. note bears interest at a fixed rate of 6.42% per year and is amortized over a sixty month period.  A final payment of approximately $2,000,000 was due on or before January 8, 2015.  On November 24, 2014, the Company refinanced the mortgage agreement with Wells Fargo, N.A.  The note requires the Company to pay monthly principal payments in the amount of $9,500, bears an interest rate of LIBOR plus two and one-quarter percent (2.25%), (effectively 2.50% at January 31, 2015) and is payable over a sixty month period.  Final payment of approximately $2,289,500 is due on or before November 8, 2019.  The outstanding balance as of January 31, 2015 was $2,831,000.
	Note D - Long-term Debt - Continued
	The Company entered into a mortgage agreement on October 24, 2013, in the amount of $1,275,000, with Wells Fargo, N.A. to finance the property that serves as the Company’s engineering and design center in Elgin, Illinois.  The Wells Fargo, N.A. note requires the Company to pay monthly principal payments in the amount of $4,250, bears interest at a fixed rate of 4.5% per year and is payable over a sixty month period.  A final payment of approximately $1,030,000 is due on or before October 2018.  The outstanding balance as of January 31, 2015 was $1,211,250.

Goodwill_And_Other_Intangible_

Goodwill And Other Intangible Assets	9 Months Ended
	Jan. 31, 2015
Goodwill And Other Intangible Assets [Abstract]
Goodwill And Other Intangible Assets	Note E - Goodwill and Other Intangible Assets
	Goodwill
	The change in carrying amount of goodwill for the nine months ended January 31, 2015, are as follows:
			Total
		Balance at April 30, 2014	$	3,222,899
		Changes in carrying amount		-
		Balance at January 31, 2015	$	3,222,899
	Other Intangible Assets
	Intangible assets subject to amortization are summarized as of January 31, 2015 as follows:
		Weighted Average
		Remaining		Gross
		Amortization		Carrying		Accumulated
		Period (Years)		Amount		Amortization
	Other intangible assets – Able	-		$	375,000	$	375,000
	Customer relationships – Able	-			2,395,000		2,395,000
	Spitfire:
	Non-contractual customer relationships	12.3			4,690,000		473,784
	Backlog	-			22,000		22,000
	Trade names	17.3			980,000		130,656
	Non-compete agreements	4.3			50,000		19,040
	Patents	2.3			400,000		213,344
	Total			$	8,912,000	$	3,628,824
	Note E - Goodwill and Other Intangible Assets - Continued
	Intangible assets subject to amortization are summarized as of April  30, 2014, as follows:
		Weighted Average
		Remaining		Gross
		Amortization		Carrying		Accumulated
		Period (Years)		Amount		Amortization
	Other intangible assets – Able	-		$	375,000	$	375,000
	Customer relationships – Able	-			2,395,000		2,395,000
	Spitfire:
	Non-contractual customer relationships	13.1			4,690,000		256,311
	Backlog	-			22,000		22,000
	Trade names	18.1			980,000		93,909
	Non-compete agreements	5.1			50,000		13,685
	Patents	3.1			400,000		153,341
	Total			$	8,912,000	$	3,309,246
	Estimated aggregate amortization expense for intangible assets, which become fully amortized in 2032, for the remaining periods is as follows:
	For the remaining 3 months of the fiscal year ending April 30:	2015		$	109,032
	For the fiscal year ending April 30:	2016			470,899
		2017			490,010
		2018			435,043
		2019			423,721
		Thereafter			3,354,471
				$	5,283,176
	Amortization expense was $109,032 and $86,478 for the three months ended January 31, 2015 and 2014, respectively.  Amortization expense was $319,578 and $260,202 for the nine month periods ended January 31, 2015 and 2014, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Jan. 31, 2015
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note F - Commitments and Contingencies
	As of January 31, 2015, the Company was not party to any material legal proceedings.
	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 is 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 or results of operations.
	The Company is a defendant in an employment-related lawsuit.  The suit was tried before a jury in December, 2014.  The jury found for the plaintiff on one count and awarded the plaintiff a total of $307,000.  The Company filed a Motion for a Judgment in its favor as a matter of law or, in the alternative, for a new trial or elimination or reduction in the amount of damages.  The Company believes its position is sound in fact and law and intends to pursue its defenses vigorously, including an appeal if necessary.  In any event, the Company believes the matter is not a material legal proceeding.

Critical_Accounting_Policies

Critical Accounting Policies	9 Months Ended
	Jan. 31, 2015
Summary Of Significant Accounting Policies [Abstract]
Critical Accounting Policies	Note G - 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 (“U.S. 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 and valuation of long-lived assets.  Actual results could materially differ from these estimates.
	Note G - Critical Accounting Policies - Continued
	Revenue Recognition - Revenues from sales of the Company's electronic manufacturing services business are recognized when the finished good product is shipped to the customer.  In general, and except for consignment inventory, it is the Company's policy to recognize revenue and related costs when the finished goods have been shipped from its facilities, which is also the same point that title passes under the terms of the purchase order.  Finished goods inventory for certain customers is shipped from the Company to an independent warehouse for storage or shipped directly to the customer and stored in a segregated part of the customer’s own facility.  Upon the customer’s request for finished goods inventory, the inventory is shipped to the customer if the inventory was stored off-site, or transferred from the segregated part of the customer’s facility for consumption or use by the customer.  The Company recognizes revenue upon such shipment or transfer.  The Company does not earn a fee for such arrangements.  The Company from time to time may ship finished goods from its facilities, which is also the same point that title passes under the terms of the purchase order, and invoice the customer at the end of the calendar month.  This is done only in special circumstances to accommodate a specific customer.  Further, from time to time customers request the Company hold finished goods after they have been invoiced to consolidate finished goods for shipping purposes.  The Company generally provides a 90 day warranty for workmanship only, except for products with proprietary design, and does not have any installation, acceptance or sales incentives (although the Company has negotiated longer warranty terms in certain instances).  The warranty period for proprietary design varies based on specific design specifications.  The Company assembles and tests assemblies based on customers’ specifications.  Historically, the amount of returns for workmanship issues has been de minimis under the Company’s standard or extended warranties.
	Inventories - Inventories are valued at the lower of cost or market.  Cost is calculated as average cost.  In the event of an inventory write-down, the Company records expense to state the inventory at lower of cost or market.  The Company establishes inventory reserves for valuation, shrinkage, and excess and obsolete inventory.  The Company records provisions for inventory shrinkage based on historical experience to account for unmeasured usage or loss.  Actual results differing from these estimates could significantly affect the Company’s inventories and cost of products sold.  The Company records provisions for excess and obsolete inventories for the difference between the cost of inventory and its estimated realizable value based on assumptions about future product demand and market conditions.  Actual product demand or market conditions could be different than that projected by management.
	Note G - Critical Accounting Policies - Continued
	Goodwill - Goodwill represents the purchase price in excess of the fair value of assets acquired in business combinations.  The Company assesses goodwill for impairment at least annually in the absence of an indicator of possible impairment and immediately upon an indicator of possible impairment.  The Company is permitted the option to first assess qualitative factors to determine whether the existence of events and circumstances indicates that it is more likely than not that the fair value of any reporting unit is less than its corresponding carrying value.  If, after assessing the totality of events and circumstances, the Company concludes that it is not more likely than not that the fair value of any reporting unit is less than its corresponding carrying value then the Company is not required to take further action.  However, if the Company concludes otherwise, then it is required to perform a quantitative impairment test, including computing the fair value of the reporting unit and comparing that value to its carrying value.  If the fair value is less than its carrying value, a second step of the test is required to determine if recorded goodwill is impaired.  The Company also has the option to bypass the qualitative assessment for goodwill in any period and proceed directly to performing the quantitative impairment test.  The Company will be able to resume performing the qualitative assessment in any subsequent period.  The Company performed its annual goodwill impairment test as of February 1, 2014 and determined that no impairment existed as of that date.  The Company will perform its annual goodwill impairment test as of February 1, 2015, to determine if an impairment exists as of the date of the impairment test.
	Impairment of Long-Lived Assets - The Company reviews long-lived assets, including amortizable intangible assets for impairment.  Property, machinery and equipment and finite life intangible assets are reviewed whenever events or changes in circumstances occur that indicate possible impairment.  If events or changes in circumstances occur that indicate possible impairment, the Company’s impairment review is based on an undiscounted cash flow analysis at the lowest level at which cash flows of the long-lived assets are largely independent of other groups of its assets and liabilities.  This analysis requires management judgment with respect to changes in technology, the continued success of product lines, and future volume, revenue and expense growth rates.  The Company conducts annual reviews for idle and underutilized equipment, and reviews business plans for possible impairment.  Impairment occurs when the carrying value of the assets exceeds the future undiscounted cash flows expected to be earned by the use of the asset group.  When impairment is indicated, the estimated future cash flows are then discounted to determine the estimated fair value of the asset or asset group and an impairment charge is recorded for the difference between the carrying value and the estimated fair value.
	Income Tax - Deferred income tax assets and liabilities are determined based on differences between financial reporting and tax bases 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.  Valuation allowances are established when necessary to reduce deferred income tax assets to an amount more likely than not to be realized.
	A tax benefit from an uncertain tax position may only be recognized when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits.
	Note G - Critical Accounting Policies - Continued
	During the second quarter of fiscal year 2015, the Company received distributions from two of its Mexican subsidiaries, Acuna in the amount of $2,041,432 and Tijuana in the amount of $965,394.   The U.S. income tax on these distributions of $333,128 was reflected in the Company’s tax provision for the fiscal year ended April 30, 2014.  The distribution from the foreign subsidiaries based in Mexico does not change the Company’s intentions to indefinitely reinvest the income from the Company’s foreign subsidiaries.
	During the second quarter of fiscal year 2015, the Company recorded tax expense of $529,257 related to the inability to realize the tax benefit of a foreign tax credit that was generated in the period.  The Company’s estimate of cumulative taxable income during the foreign tax credit carryforward period are insufficient to support that the tax benefit from the foreign tax credit is more likely than not to be realized.
	The Company adjusts its tax liabilities when its judgment changes as a result of the evaluation of new information not previously available.  Due to the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from its current estimate of the tax liabilities.  These differences will be reflected as increase or decrease to income tax expense in the period in which they are determined.
	New Accounting Standards:
	In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360)."  ASU 2014-08 amends the requirements for reporting discontinued operations and requires additional disclosures about discontinued operations.  Under the new guidance, only disposals representing a strategic shift in operations or that have a major effect on the Company's operations and financial results should be presented as discontinued operations.  This new accounting guidance is effective for annual periods beginning after December 15, 2014.  The Company is currently evaluating the impact of adopting ASU 2014-18 on the Company’s results of operations or financial condition.
	In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers."  This ASU is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. This ASU is effective for annual reporting periods beginning after December 15, 2016 and early adoption is not permitted.  Accordingly, we will adopt this ASU on May 1, 2017.  Companies may use either a full retrospective or modified retrospective approach to adopt this ASU and we are currently evaluating which transition approach to use and the full impact this ASU will have on our future consolidated financial statements.
	Note G - Critical Accounting Policies - Continued
	New Accounting Standards - Continued
	In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40).  The amendments in this ASU provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures.  An entity’s management should evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or are available to be issued, when applicable).  ASU 2014-15 is effective for the Company beginning with the annual reporting for Fiscal 2016, and reports for interim and annual periods thereafter.  Early adoption is permitted. The Company is evaluating the impact of adoption of this ASU, but does not expect the adoption to have a material impact on its consolidated financial statements.

Critical_Accounting_Policies_P

Critical Accounting Policies (Policy)	9 Months Ended
	Jan. 31, 2015
Summary Of 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 (“U.S. 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 and valuation of long-lived assets.  Actual results could materially differ from these estimates.
Revenue Recognition	Revenue Recognition - Revenues from sales of the Company's electronic manufacturing services business are recognized when the finished good product is shipped to the customer.  In general, and except for consignment inventory, it is the Company's policy to recognize revenue and related costs when the finished goods have been shipped from its facilities, which is also the same point that title passes under the terms of the purchase order.  Finished goods inventory for certain customers is shipped from the Company to an independent warehouse for storage or shipped directly to the customer and stored in a segregated part of the customer’s own facility.  Upon the customer’s request for finished goods inventory, the inventory is shipped to the customer if the inventory was stored off-site, or transferred from the segregated part of the customer’s facility for consumption or use by the customer.  The Company recognizes revenue upon such shipment or transfer.  The Company does not earn a fee for such arrangements.  The Company from time to time may ship finished goods from its facilities, which is also the same point that title passes under the terms of the purchase order, and invoice the customer at the end of the calendar month.  This is done only in special circumstances to accommodate a specific customer.  Further, from time to time customers request the Company hold finished goods after they have been invoiced to consolidate finished goods for shipping purposes.  The Company generally provides a 90 day warranty for workmanship only, except for products with proprietary design, and does not have any installation, acceptance or sales incentives (although the Company has negotiated longer warranty terms in certain instances).  The warranty period for proprietary design varies based on specific design specifications.  The Company assembles and tests assemblies based on customers’ specifications.  Historically, the amount of returns for workmanship issues has been de minimis under the Company’s standard or extended warranties.
Inventories	Inventories - Inventories are valued at the lower of cost or market.  Cost is calculated as average cost.  In the event of an inventory write-down, the Company records expense to state the inventory at lower of cost or market.  The Company establishes inventory reserves for valuation, shrinkage, and excess and obsolete inventory.  The Company records provisions for inventory shrinkage based on historical experience to account for unmeasured usage or loss.  Actual results differing from these estimates could significantly affect the Company’s inventories and cost of products sold.  The Company records provisions for excess and obsolete inventories for the difference between the cost of inventory and its estimated realizable value based on assumptions about future product demand and market conditions.  Actual product demand or market conditions could be different than that projected by management.
Goodwill	Goodwill - Goodwill represents the purchase price in excess of the fair value of assets acquired in business combinations.  The Company assesses goodwill for impairment at least annually in the absence of an indicator of possible impairment and immediately upon an indicator of possible impairment.  The Company is permitted the option to first assess qualitative factors to determine whether the existence of events and circumstances indicates that it is more likely than not that the fair value of any reporting unit is less than its corresponding carrying value.  If, after assessing the totality of events and circumstances, the Company concludes that it is not more likely than not that the fair value of any reporting unit is less than its corresponding carrying value then the Company is not required to take further action.  However, if the Company concludes otherwise, then it is required to perform a quantitative impairment test, including computing the fair value of the reporting unit and comparing that value to its carrying value.  If the fair value is less than its carrying value, a second step of the test is required to determine if recorded goodwill is impaired.  The Company also has the option to bypass the qualitative assessment for goodwill in any period and proceed directly to performing the quantitative impairment test.  The Company will be able to resume performing the qualitative assessment in any subsequent period.  The Company performed its annual goodwill impairment test as of February 1, 2014 and determined that no impairment existed as of that date.  The Company will perform its annual goodwill impairment test as of February 1, 2015, to determine if an impairment exists as of the date of the impairment test.
Impairment Of Long-Lived Assets	Impairment of Long-Lived Assets - The Company reviews long-lived assets, including amortizable intangible assets for impairment.  Property, machinery and equipment and finite life intangible assets are reviewed whenever events or changes in circumstances occur that indicate possible impairment.  If events or changes in circumstances occur that indicate possible impairment, the Company’s impairment review is based on an undiscounted cash flow analysis at the lowest level at which cash flows of the long-lived assets are largely independent of other groups of its assets and liabilities.  This analysis requires management judgment with respect to changes in technology, the continued success of product lines, and future volume, revenue and expense growth rates.  The Company conducts annual reviews for idle and underutilized equipment, and reviews business plans for possible impairment.  Impairment occurs when the carrying value of the assets exceeds the future undiscounted cash flows expected to be earned by the use of the asset group.  When impairment is indicated, the estimated future cash flows are then discounted to determine the estimated fair value of the asset or asset group and an impairment charge is recorded for the difference between the carrying value and the estimated fair value.
Income Tax	Income Tax - Deferred income tax assets and liabilities are determined based on differences between financial reporting and tax bases 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.  Valuation allowances are established when necessary to reduce deferred income tax assets to an amount more likely than not to be realized.
	A tax benefit from an uncertain tax position may only be recognized when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits.
	Note G - Critical Accounting Policies - Continued
	During the second quarter of fiscal year 2015, the Company received distributions from two of its Mexican subsidiaries, Acuna in the amount of $2,041,432 and Tijuana in the amount of $965,394.   The U.S. income tax on these distributions of $333,128 was reflected in the Company’s tax provision for the fiscal year ended April 30, 2014.  The distribution from the foreign subsidiaries based in Mexico does not change the Company’s intentions to indefinitely reinvest the income from the Company’s foreign subsidiaries.
	During the second quarter of fiscal year 2015, the Company recorded tax expense of $529,257 related to the inability to realize the tax benefit of a foreign tax credit that was generated in the period.  The Company’s estimate of cumulative taxable income during the foreign tax credit carryforward period are insufficient to support that the tax benefit from the foreign tax credit is more likely than not to be realized.
	The Company adjusts its tax liabilities when its judgment changes as a result of the evaluation of new information not previously available.  Due to the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from its current estimate of the tax liabilities.  These differences will be reflected as increase or decrease to income tax expense in the period in which they are determined.
New Accounting Standards	New Accounting Standards:
	In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360)."  ASU 2014-08 amends the requirements for reporting discontinued operations and requires additional disclosures about discontinued operations.  Under the new guidance, only disposals representing a strategic shift in operations or that have a major effect on the Company's operations and financial results should be presented as discontinued operations.  This new accounting guidance is effective for annual periods beginning after December 15, 2014.  The Company is currently evaluating the impact of adopting ASU 2014-18 on the Company’s results of operations or financial condition.
	In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers."  This ASU is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. This ASU is effective for annual reporting periods beginning after December 15, 2016 and early adoption is not permitted.  Accordingly, we will adopt this ASU on May 1, 2017.  Companies may use either a full retrospective or modified retrospective approach to adopt this ASU and we are currently evaluating which transition approach to use and the full impact this ASU will have on our future consolidated financial statements.
	Note G - Critical Accounting Policies - Continued
	New Accounting Standards - Continued
	In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40).  The amendments in this ASU provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures.  An entity’s management should evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or are available to be issued, when applicable).  ASU 2014-15 is effective for the Company beginning with the annual reporting for Fiscal 2016, and reports for interim and annual periods thereafter.  Early adoption is permitted. The Company is evaluating the impact of adoption of this ASU, but does not expect the adoption to have a material impact on its consolidated financial statements.

Inventories_Net_Tables

Inventories, Net (Tables)	9 Months Ended
	Jan. 31, 2015
Inventories, Net [Abstract]
Components Of Inventory
		January 31,		April 30,
		2015		2014
	Finished products	$	26,009,524	$	18,553,112
	Work-in-process		2,946,616		3,126,596
	Raw materials		41,453,734		33,853,653
			70,409,874		55,533,361
	Less obsolescence reserve		1,763,670		1,804,984
		$	68,646,204	$	53,728,377

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Jan. 31, 2015
Earnings Per Share [Abstract]
Computation Of Basic And Diluted Earnings Per Share
		Three Months Ended				Nine Months Ended
		January 31,				January 31,
		2015		2014		2015		2014
	Net income	$	564,080	$	743,794	$	727,319	$	2,495,912
	Weighted-average shares
	Basic		4,054,146		3,966,814		4,042,307		3,963,093
	Effect of dilutive stock options		61,869		121,881		79,350		92,805
	Diluted		4,116,015		4,088,695		4,121,657		4,055,898
	Basic earnings per share	$	0.14	$	0.19	$	0.18	$	0.63
	Diluted earnings per share	$	0.14	$	0.18	$	0.18	$	0.62

Goodwill_And_Other_Intangible_1

Goodwill And Other Intangible Assets (Tables)	9 Months Ended
	Jan. 31, 2015
Goodwill And Other Intangible Assets [Abstract]
Change In Carrying Amount Of Goodwill
			Total
		Balance at April 30, 2014	$	3,222,899
		Changes in carrying amount		-
		Balance at January 31, 2015	$	3,222,899
Summary Of Intangible Assets Subject To Amortization	Intangible assets subject to amortization are summarized as of January 31, 2015 as follows:
		Weighted Average
		Remaining		Gross
		Amortization		Carrying		Accumulated
		Period (Years)		Amount		Amortization
	Other intangible assets – Able	-		$	375,000	$	375,000
	Customer relationships – Able	-			2,395,000		2,395,000
	Spitfire:
	Non-contractual customer relationships	12.3			4,690,000		473,784
	Backlog	-			22,000		22,000
	Trade names	17.3			980,000		130,656
	Non-compete agreements	4.3			50,000		19,040
	Patents	2.3			400,000		213,344
	Total			$	8,912,000	$	3,628,824
	Note E - Goodwill and Other Intangible Assets - Continued
	Intangible assets subject to amortization are summarized as of April  30, 2014, as follows:
		Weighted Average
		Remaining		Gross
		Amortization		Carrying		Accumulated
		Period (Years)		Amount		Amortization
	Other intangible assets – Able	-		$	375,000	$	375,000
	Customer relationships – Able	-			2,395,000		2,395,000
	Spitfire:
	Non-contractual customer relationships	13.1			4,690,000		256,311
	Backlog	-			22,000		22,000
	Trade names	18.1			980,000		93,909
	Non-compete agreements	5.1			50,000		13,685
	Patents	3.1			400,000		153,341
	Total			$	8,912,000	$	3,309,246
Estimated Aggregate Amortization Expense
	For the remaining 3 months of the fiscal year ending April 30:	2015		$	109,032
	For the fiscal year ending April 30:	2016			470,899
		2017			490,010
		2018			435,043
		2019			423,721
		Thereafter			3,354,471
				$	5,283,176

Inventories_Net_Components_Of_

Inventories, Net (Components Of Inventory) (Details) (USD $)	Jan. 31, 2015	Apr. 30, 2014
Inventories, Net [Abstract]
Finished products	$26,009,524	$18,553,112
Work-in-process	2,946,616	3,126,596
Raw materials	41,453,734	33,853,653
Total inventory, gross	70,409,874	55,533,361
Less obsolescence reserve	1,763,670	1,804,984
Total inventory, net	$68,646,204	$53,728,377

Earnings_Per_Share_Narrative_D

Earnings Per Share (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		0 Months Ended	1 Months Ended
	Oct. 31, 2013	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014	Jun. 01, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Oct. 31, 2013	Oct. 31, 2014	Oct. 01, 2013
Earnings Per Share [Line Items]
Common stock were outstanding		90,354	127,042	90,354	127,042
Options granted		0	0	0	20,000
Stock option expense		$4,559	$18,878	$27,491	$52,976
Stock-based compensation expense				53,835	73,115
Balance of unrecognized compensation expense related to stock options plans		26,118	76,743	26,118	76,743
Restricted stock expense				42,431	32,016
Number of eligible option to be repurchased												395,190
Authorized tender offer amount				301,500
Shares repurchased through tender offer				394,200
Shares repurchased through tender offer, value	300,410
2013 Non-Employee Director Restricted Stock Plan
Earnings Per Share [Line Items]
Restricted stock, vesting period				6 months
Employee Stock Purchase Plan [Member]
Earnings Per Share [Line Items]
Stock option expense		6,469		26,344
Stock-based compensation expense		22,712		107,165
Shares of common stock for issuance		500,000		500,000
Additional shares of common stock for issuance each fiscal year				25,000
Shares issued		4,591		14,220
Restricted Stock [Member]
Earnings Per Share [Line Items]
Shares of restricted stock granted						25,000
Shares of restricted stock vested							8,340	8,330	8,330
Restricted stock expense		0	3,362	1,746	11,960
Issuance of restricted common stock		0	0	0	0
Balance of unrecognized compensation expense related to restricted stock award		0	5,107	0	5,107
Restricted Stock [Member] | 2013 Non-Employee Director Restricted Stock Plan
Earnings Per Share [Line Items]
Balance of unrecognized compensation expense related to stock options plans	7,500									7,500
Restricted stock expense		0	20,055	0	26,813
Balance of unrecognized compensation expense related to restricted stock award		0		0
Restricted Stock [Member] | 2013 Non-Employee Director Restricted Stock Plan | Director [Member]
Earnings Per Share [Line Items]
Shares of restricted stock granted										1,500
Restricted Stock [Member] | 2014 Non-Employee Directors Restricted Stock Plan [Member]
Earnings Per Share [Line Items]
Shares of restricted stock granted											1,750
Shares of restricted stock vested				8,750
Restricted stock expense		30,431		40,685
Restricted stock, vesting period				6 months
Balance of unrecognized compensation expense related to restricted stock award		$19,515		$19,515
Minimum [Member]
Earnings Per Share [Line Items]
Authorized tender offer amount, per share				$0.18
Maximum [Member]
Earnings Per Share [Line Items]
Authorized tender offer amount, per share				$1.35

Earnings_Per_Share_Computation

Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Earnings Per Share [Abstract]
Net income	$564,080	$743,794	$727,319	$2,495,912
Weighted-average shares Basic	4,054,146	3,966,814	4,042,307	3,963,093
Effect of dilutive stock options	61,869	121,881	79,350	92,805
Diluted	4,116,015	4,088,695	4,121,657	4,055,898
Basic earnings per share	$0.14	$0.19	$0.18	$0.63
Diluted earnings per share	$0.14	$0.18	$0.18	$0.62

LongTerm_Debt_Details

Long-Term Debt (Details) (USD $)	9 Months Ended	3 Months Ended	0 Months Ended					3 Months Ended
	Jan. 31, 2015	Jan. 31, 2015	Nov. 24, 2014	Jan. 08, 2010	Oct. 24, 2013	Jan. 31, 2015	Oct. 31, 2014	Jan. 31, 2014
Amended Senior Secured Credit Facility Over Advance [Member]
Debt Instrument [Line Items]
Temporary borrowing base	60.00%
Borrowing base after temporary adjustment	50.00%
Wells Fargo Bank [Member]
Debt Instrument [Line Items]
Fixed interest rate	2.50%	2.50%				2.50%
Effective interest rate	3.25%	3.25%				3.25%
Variable interest rate		1.00%
Wells Fargo Bank [Member] | Mortgage 1 [Member]
Debt Instrument [Line Items]
Mortgage agreement, amount			$2,289,500	$2,500,000
Mortgage agreement, interest rate				6.42%
Mortgage agreement, amount due				2,000,000
Mortgage agreement, maturity date			8-Nov-19	8-Jan-15
Outstanding amount	2,831,000	2,831,000				2,831,000
Debt, amortization period	60 months
Wells Fargo Bank [Member] | Mortgage 2 [Member]
Debt Instrument [Line Items]
Mortgage agreement, amount					1,275,000
Mortgage agreement, amount repaid			9,500		4,250
Mortgage agreement, interest rate					4.50%
Mortgage agreement, amount due					1,030,000
Mortgage agreement, maturity date					1-Oct-18
Outstanding amount	1,211,250	1,211,250				1,211,250
Debt, amortization period	60 months
Wells Fargo Bank [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Effective interest rate	2.50%	2.50%				2.50%
Variable interest rate		2.25%
Wells Fargo Bank [Member] | LIBOR [Member] | Mortgage 1 [Member]
Debt Instrument [Line Items]
Mortgage agreement, interest rate			2.25%
Mortgage agreement, effective interest rate						2.50%
Wells Fargo Bank [Member] | Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility credit limit	30,000,000	30,000,000				30,000,000
Initial expiration date	30-Sep-13
Expiration date								31-Oct-15
Extended Term Of Senior Secured Credit Facility							31-Oct-17
Equity ownership in foreign entities pledged as collateral, percentage	65.00%	65.00%				65.00%
Receivable borrowing base, percentage	85.00%
Outstanding balance under the credit facility	26,510,849	26,510,849				26,510,849
Unused availability under the credit facility	3,489,151	3,489,151				3,489,151
Wells Fargo Bank [Member] | Senior Secured Credit Facility Over Advance [Member]
Debt Instrument [Line Items]
Credit facility credit limit	5,000,000	5,000,000				5,000,000
Fixed interest rate	2.50%	2.50%				2.50%
Effective interest rate	3.25%	3.25%				3.25%
Variable interest rate	1.00%
Line of credit facility amendment fee	5,000
Wells Fargo Bank [Member] | Senior Secured Credit Facility Over Advance [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Effective interest rate	3.25%	3.25%				3.25%
Variable interest rate	2.75%
Wells Fargo Bank [Member] | Amended Senior Secured Credit Facility Over Advance [Member]
Debt Instrument [Line Items]
Fixed interest rate	2.50%	2.50%				2.50%
Effective interest rate	3.25%	3.25%				3.25%
Variable interest rate	1.00%
Wells Fargo Bank [Member] | Amended Senior Secured Credit Facility Over Advance [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Effective interest rate	4.00%	4.00%				4.00%
Variable interest rate	3.50%

Goodwill_And_Other_Intangible_2

Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Goodwill And Other Intangible Assets [Abstract]
Amortization expense	$109,032	$86,478	$319,578	$260,202

Goodwill_And_Other_Intangible_3

Goodwill And Other Intangible Assets (Change In Carrying Amount Of Goodwill) (Details) (USD $)	9 Months Ended
	Jan. 31, 2015
Goodwill And Other Intangible Assets [Abstract]
Beginning balance	$3,222,899
Changes in carrying amount
Ending balance	$3,222,899

Goodwill_And_Other_Intangible_4

Goodwill And Other Intangible Assets (Summary Of Intangible Assets Subject To Amortization) (Details) (USD $)	9 Months Ended	12 Months Ended
	Jan. 31, 2015	Apr. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$8,912,000	$8,912,000
Accumulated Amortization	3,628,824	3,309,246
Able [Member] | Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	375,000	375,000
Accumulated Amortization	375,000	375,000
Able [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,395,000	2,395,000
Accumulated Amortization	2,395,000	2,395,000
Spitfire [Member] | Non-Contractual Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	12 years 3 months 18 days	13 years 1 month 6 days
Gross Carrying Amount	4,690,000	4,690,000
Accumulated Amortization	473,784	256,311
Spitfire [Member] | Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,000	22,000
Accumulated Amortization	22,000	22,000
Spitfire [Member] | Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	17 years 3 months 18 days	18 years 1 month 6 days
Gross Carrying Amount	980,000	980,000
Accumulated Amortization	130,656	93,909
Spitfire [Member] | Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	4 years 3 months 18 days	5 years 1 month 6 days
Gross Carrying Amount	50,000	50,000
Accumulated Amortization	19,040	13,685
Spitfire [Member] | Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	2 years 3 months 18 days	3 years 1 month 6 days
Gross Carrying Amount	400,000	400,000
Accumulated Amortization	$213,344	$153,341

Goodwill_And_Other_Intangible_5

Goodwill And Other Intangible Assets (Estimated Aggregate Amortization Expense) (Details) (USD $)	Jan. 31, 2015	Apr. 30, 2014
Goodwill And Other Intangible Assets [Abstract]
For the remaining 6 months of the fiscal year ending April 30, 2015	$109,032
For the fiscal year ending April 30, 2016	470,899
For the fiscal year ending April 30, 2017	490,010
For the fiscal year ending April 30, 2018	435,043
For the fiscal year ending April 30, 2019	423,721
Thereafter	3,354,471
Total	$5,283,176	$5,602,754

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	1 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
	item
Commitments and Contingencies [Abstract]
Counts awarded upon	1
Damages awarded	$307

Critical_Accounting_Policies_D

Critical Accounting Policies (Details) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Feb. 01, 2014	Oct. 31, 2014	Jan. 31, 2015	Apr. 30, 2014
Product warranty period			90 days
Goodwill impairment	$0
Tax on distributions from foreign earnings				333,128
Discrete tax expense		529,257
Acuna MX [Member]
Distributions from foreign subsidiaries		2,041,432
Tijuana, MX [Member]
Distributions from foreign subsidiaries		$965,394