Gresham Worldwide (GIGAQ) S-1/A 19 Oct 18 2019 Q1 IPO registration (amended) Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Jun. 30, 2018	Oct. 17, 2018
Document Information [Line Items]
Entity Registrant Name	GIGA TRONICS INC
Entity Central Index Key	719,274
Trading Symbol	giga
Current Fiscal Year End Date	--03-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		11,624,452
Document Type	S-1/A
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,019
Document Fiscal Period Focus	Q1
Amendment Flag	true
Amendment Description	Giga-tronics Incorporated is filing this Amendment No. 1 (the “Amendment”) to its Registration Statement on Form S-1, File No. 333-227874 (the “Registration Statement”), for the sole purpose of filing as exhibits the XBRL documents that inadvertently were omitted from the Registration Statement that was filed on October 17, 2018. Accordingly, the preliminary prospectus included in this Amendment has not changed from that filed with the Registration Statement.

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2018	Apr. 01, 2018	Mar. 31, 2018		Jun. 24, 2017	Mar. 25, 2017	Mar. 26, 2016
Assets
Cash and cash-equivalents	$ 748,000		$ 1,485,000		$ 1,137,000	$ 1,421,000	$ 1,331,000
Trade accounts receivable, net of allowance of $8 and $8, respectively	458,000		364,000	[1]		954,000
Inventories, net	3,438,000	$ 3,906,000	5,487,000	[1]		4,811,000
Prepaid expenses and other current assets	792,000	275,000	87,000	[1]		452,000
Total current assets	5,436,000		7,423,000	[1]		7,638,000
Property and equipment, net	760,000		833,000	[1]		528,000
Other long term assets	175,000		175,000	[1]		175,000
Total assets	6,371,000		8,431,000	[1]	$ 9,060,000	9,074,000
Liabilities and shareholders' equity
Line of credit	552,000		552,000	[1]		582,000
Accounts payable	756,000		996,000	[1]		1,107,000
Loan payable, net of discounts and issuance costs	1,523,000		1,447,000	[1]
Accrued payroll and benefits	413,000		343,000	[1]		583,000
Deferred revenue	257,000	806,000	3,374,000	[1]
Deferred rent, net of long term portion	62,000		58,000	[1]
Capital lease obligations	40,000		52,000	[1]		50,000
Deferred liability related to asset sale	51,000		52,000	[1]		375,000
Other current liabilities	959,000		947,000	[1]		707,000
Total current liabilities	4,613,000		7,809,000	[1]		7,018,000
Long term deferred rent	411,000		429,000	[1]
Long term obligations - capital lease	50,000		62,000	[1]		114,000
Total liabilities	5,074,000		8,300,000	[1]		7,354,000
Commitments and contingencies				[1]
Shareholders' equity:
Common stock no par value; Authorized - 40,000,000 shares; 10,418,953 shares at June 30, 2018 and 10,312,653 shares at March 31, 2018 issued and outstanding	25,272,000		25,200,000	[1]		24,390,000
Accumulated deficit	(27,793,000)	$ (27,506,000)	(28,682,000)			(25,581,000)
Total shareholders' equity	1,297,000		131,000	[1]		1,720,000
Total liabilities and shareholders' equity	6,371,000		8,431,000	[1]		9,074,000
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock				[1]
Series B, C, and D Preferred Stock [Member]
Shareholders' equity:
Preferred stock	2,911,000		2,911,000	[1]		2,911,000
Series E Preferred Stock [Member]
Shareholders' equity:
Preferred stock	$ 907,000		$ 702,000	[1]		$ 0
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017	Mar. 26, 2016
Trade accounts receivable, allowance	$ 8	$ 8	[1]	$ 45	$ 45
Preferred stock, authorized (in shares)	1,000,000	1,000,000	[1]	1,000,000
Preferred stock, par value (in dollars per share)		$ 0		$ 0
Common stock, par value (in dollars per share)	$ 0	$ 0	[1]	$ 0
Common stock, shares authorized (in shares)	40,000,000	40,000,000	[1]	40,000,000
Common stock, issued (in shares)	10,418,953	10,312,653	[1]	9,594,203
Common stock, outstanding (in shares)	10,418,953	10,312,653	[1]	9,594,203
Series A Preferred Stock [Member]
Preferred stock, authorized (in shares)	250,000	250,000	[1]	250,000
Preferred stock, issued (in shares)	0	0	[1]	0
Preferred stock, outstanding (in shares)	0	0	[1]	0
Preferred stock, par value (in dollars per share)	$ 0	$ 0	[1]
Series B, C, and D Preferred Stock [Member]
Preferred stock, authorized (in shares)	19,500	19,500	[1]	19,500
Preferred stock, issued (in shares)	18,533.51	18,533.51	[1]	18,533.51
Preferred stock, outstanding (in shares)	18,533.51	18,533.51	[1]	18,533.51
Preferred stock, liquidation preference	$ 3,540	$ 3,540	[1]	$ 3,540
Series E Preferred Stock [Member]
Preferred stock, authorized (in shares)	60,000	60,000	[1]
Preferred stock, issued (in shares)	53,400	43,800	[1]
Preferred stock, outstanding (in shares)	53,400	43,800	[1]
Preferred stock, liquidation preference	$ 2,003	$ 1,643	[1]
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 24, 2017
Revenue	$ 2,843,000	$ 1,991,000
Cost of goods and services	774,000	1,525,000
Gross margin	1,306,000	466,000
Operating expenses:
Engineering	375,000	452,000
Selling, general and administrative	1,001,000	1,171,000
Total operating expenses	1,376,000	1,623,000
Operating loss	(70,000)	(1,157,000)
Interest expense:
Interest expense, net	(127,000)	(79,000)
Interest expense from accretion of loan discount	(50,000)	(22,000)
Total interest expense, net	(177,000)	(101,000)
Loss before income taxes	(247,000)	(1,258,000)
Provision for income taxes	62,000	0
Net loss	$ (287,000)	$ (1,258,000)
Loss per common share - basic (in dollars per share)	$ (0.03)	$ (0.13)
Loss per common share - diluted (in dollars per share)	$ (0.03)	$ (0.13)
Weighted average common shares used in per share calculation:
Basic (in shares)	10,419	9,715
Diluted (in shares)	10,419	9,715
Product [Member]
Revenue	$ 207,000	$ 316,000
Service [Member]
Revenue	$ 2,843,000	$ 1,675,000

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 24, 2017
Cash flows from operating activities:
Net loss	$ (287,000)	$ (1,258,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	73,000	247,000
Stock based compensation	57,000	46,000
Change in fair value of equity forward		46,000
Accretion of discounts and issuance costs on debt	50,000	22,000
Accrued interest and fees on loan payable	25,000
Change in deferred rent	(14,000)	451,000
Changes in operating assets and liabilities:
Trade accounts receivable	(94,000)	206,000
Inventories	468,000	(178,000)
Prepaid expenses and other assets	(516,000)	75,000
Accounts payable	(240,000)	(441,000)
Accrued payroll and benefits	70,000	(156,000)
Deferred revenue	(550,000)	(167,000)
Other current liabilities	12,000
Net cash used in operating activities	(945,000)	(1,107,000)
Cash flows from investing activities:
Purchases of property and equipment		(620,000)
Net cash (used in) provided by investing activities		(620,000)
Cash flows from financing activities:
Payments on capital leases	(12,000)	(13,000)
Proceeds from loan payable, net of issuance costs		1,456,000
Proceeds from issuance of Series E preferred stock, net of issuance costs of $102	205,000
Exercise of warrants	15,000
Net cash (used in) provided by financing activities	208,000	1,443,000
Increase in cash and cash-equivalents	(737,000)	(284,000)
Beginning cash and cash-equivalents	1,485,000	1,421,000
Ending cash and cash-equivalents	748,000	1,137,000
Supplementary disclosure of cash flow information:
Cash paid for income taxes
Cash paid for interest	61,000	39,000
Supplementary disclosure of noncash investing and financing activities:
Cumulative effect of adoption of ASC 606 on inventory	(1,581,000)
Cumulative effect of adoption of ASC 606 on prepaid expenses and other current assets	189,000
Cumulative effect of adoption of ASC 606 on deferred revenue	2,567,000
Common stock issued in connection with debt issuance		156,000
Fully depreciated equipment disposal		$ 377,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Mar. 31, 2018		Mar. 25, 2017
Current assets:
Cash and cash-equivalents	$ 1,485,000		$ 1,421,000
Trade accounts receivable, net of allowance of $8 and $8, respectively	364,000	[1]	954,000
Inventories, net	5,487,000	[1]	4,811,000
Prepaid expenses and other current assets	87,000	[1]	452,000
Total current assets	7,423,000	[1]	7,638,000
Property and equipment, net	833,000	[1]	528,000
Other long term assets	175,000	[1]	175,000
Capitalized software development costs, net			733,000
Total assets	8,431,000	[1]	9,074,000
Liabilities and shareholders' equity
Line of credit	552,000	[1]	582,000
Loan payable, net of discounts and issuance costs	1,447,000	[1]
Accounts payable	996,000	[1]	1,107,000
Accrued payroll and benefits	343,000	[1]	583,000
Deferred revenue	3,374,000		3,614,000
Deferred rent, net of long term portion	58,000	[1]
Capital lease obligations	52,000	[1]	50,000
Deferred liability related to asset sale	52,000	[1]	375,000
Other current liabilities	947,000	[1]	707,000
Total current liabilities	7,809,000	[1]	7,018,000
Warrant liability, at estimated fair value			222,000
Long term deferred rent	429,000	[1]
Long term obligations - capital lease	62,000	[1]	114,000
Total liabilities	8,300,000	[1]	7,354,000
Commitments and contingencies		[1]
Shareholders' equity:
Common stock no par value; Authorized - 40,000,000 shares; 10,418,953 shares at June 30, 2018 and 10,312,653 shares at March 31, 2018 issued and outstanding	25,200,000	[1]	24,390,000
Accumulated deficit	(28,682,000)		(25,581,000)
Total shareholders' equity	131,000	[1]	1,720,000
Total liabilities and shareholders' equity	8,431,000	[1]	9,074,000
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock		[1]
Series B, C, and D Preferred Stock [Member]
Shareholders' equity:
Preferred stock	2,911,000	[1]	2,911,000
Series E Preferred Stock [Member]
Shareholders' equity:
Preferred stock	$ 702,000	[1]	$ 0
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017	Mar. 26, 2016
Trade accounts receivable, allowance	$ 8	$ 8	[1]	$ 45	$ 45
Preferred stock, authorized (in shares)	1,000,000	1,000,000	[1]	1,000,000
Preferred stock, par value (in dollars per share)		$ 0		$ 0
Common stock, par value (in dollars per share)	$ 0	$ 0	[1]	$ 0
Common stock, shares authorized (in shares)	40,000,000	40,000,000	[1]	40,000,000
Common stock, issued (in shares)	10,418,953	10,312,653	[1]	9,594,203
Common stock, outstanding (in shares)	10,418,953	10,312,653	[1]	9,594,203
Series A Preferred Stock [Member]
Preferred stock, authorized (in shares)	250,000	250,000	[1]	250,000
Preferred stock, issued (in shares)	0	0	[1]	0
Preferred stock, outstanding (in shares)	0	0	[1]	0
Preferred stock, par value (in dollars per share)	$ 0	$ 0	[1]
Series B, C, and D Preferred Stock [Member]
Preferred stock, authorized (in shares)	19,500	19,500	[1]	19,500
Preferred stock, issued (in shares)	18,533.51	18,533.51	[1]	18,533.51
Preferred stock, outstanding (in shares)	18,533.51	18,533.51	[1]	18,533.51
Preferred stock, liquidation preference	$ 3,540	$ 3,540	[1]	$ 3,540
Series E Preferred Stock [Member]
Preferred stock, authorized (in shares)	60,000	60,000	[1]
Preferred stock, issued (in shares)	53,400	43,800	[1]
Preferred stock, outstanding (in shares)	53,400	43,800	[1]
Preferred stock, liquidation preference	$ 2,003	$ 1,643	[1]
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Net sales	$ 9,800,000	$ 16,267,000
Cost of sales	7,064,000	11,716,000
Gross margin	2,736,000	4,551,000
Operating expenses:
Engineering	1,794,000	2,254,000
Selling, general and administrative	4,076,000	4,641,000
Total operating expenses	5,870,000	6,895,000
Operating loss	(3,134,000)	(2,344,000)
Gain on adjustment of warrant liability to fair value	172,000	131,000
Gain on sale of product line	324,000	802,000
Interest expense:
Interest expense, net	(461,000)	(111,000)
Interest expense from accretion of loan discount		(22,000)
Total interest expense, net	(461,000)	(133,000)
Loss before income taxes	(3,099,000)	(1,544,000)
Provision for income taxes	2,000	2,000
Net loss	(3,101,000)	(1,546,000)
Deemed dividend on Series E shares	(557,000)
Net loss attributable to common shareholders	$ (3,658,000)	$ (1,546,000)
Loss per common share - basic (in dollars per share)	$ (0.38)	$ (0.16)
Loss per common share - diluted (in dollars per share)	$ (0.38)	$ (0.16)
Weighted average common shares used in per share calculation:
Basic (in shares)	9,738,000	9,550,000
Diluted (in shares)	9,738,000	9,550,000

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 26, 2016	18,534	9,549,703
Balance at Mar. 26, 2016	$ 2,911	$ 24,104	$ (24,035)	$ 2,980
Net loss			(1,546)	(1,546)
Restricted stock granted (in shares)		44,500
Share based compensation		$ 286		286
Balance (in shares) at Mar. 25, 2017	18,534	9,594,203
Balance at Mar. 25, 2017	$ 2,911	$ 24,390	(25,581)	1,720
Net loss			(3,101)	(3,101)
Restricted stock granted (in shares)		586,950
Share based compensation		$ 251		251
Restricted stock forfeited (in shares)		(236,000)
Shares issued related to loan agreement (in shares)		367,500
Shares issued related to loan agreement		$ 224		224
Proceeds from issuance of Series E preferred stock, net of issuance costs of $102 (in shares)	43,800
Proceeds from issuance of Series E preferred stock, net of issuance costs of $102	$ 993			993
Repriced 2016 investor warrants	(203)	203
Fair value of the warrants issued to EGE as issuance cost of Series E	(54)	54
Repricing of warrants issued to EGE related to 2016 private placement	(34)	34
Fair value of modified PFG warrants		44		44
Beneficial Conversion Feature (BCF) upon issuance of Series E preferred shares	(557)	557
Deemed dividend of discount to Series E preferred shares resulting from recognition of BCF	$ 557	$ (557)
Balance (in shares) at Mar. 31, 2018	62,334	10,312,653
Balance at Mar. 31, 2018	$ 3,613	$ 25,200	$ (28,682)	$ 131

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parentheticals) $ in Thousands	12 Months Ended
	Mar. 31, 2018USD ($)
Shares issued, issuance cost	$ 102

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Cash flows from operating activities:
Net loss	$ (3,101,000)	$ (1,546,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,116,000	827,000
Share based compensation	251,000	286,000
Accretion of discounts and issuance costs on debt	127,000	30,000
Adjustment of warrant liability to fair value	(172,000)	(131,000)
Change in fair value of equity forward	(16,000)
Capitalized software development costs		(334,000)
Change in other long term assets		(167,000)
Gain on sale of product line	(324,000)	(802,000)
Accrued interest and fees on loan payable	98,000
Change in deferred rent	487,000	(110,000)
Changes in operating assets and liabilities:
Trade accounts receivable	590,000	1,175,000
Inventories	(676,000)	883,000
Prepaid expenses and other current assets	365,000	(134,000)
Accounts payable	(111,000)	(817,000)
Accrued payroll and benefits	(240,000)	(64,000)
Deferred revenue	(240,000)	810,000
Other current liabilities	229,000	38,000
Net cash used in operating activities	(1,617,000)	(56,000)
Cash flows from investing activities:
Purchases of property and equipment	(688,000)	(41,000)
Cash received from sale of product line		1,225,000
Cash returned related to sale of product line		(375,000)
Net cash (used in) provided by investing activities	(688,000)	809,000
Cash flows from financing activities:
Payments on capital leases	(50,000)	(45,000)
Repayments of line of credit	(30,000)	(218,000)
Proceeds from loan payable, net of issuance costs	1,456,000
Repayments of loan payable		(400,000)
Proceeds from issuance of Series E preferred stock, net of issuance costs of $102	993,000
Net cash (used in) provided by financing activities	2,369,000	(663,000)
Increase in cash and cash-equivalents	64,000	90,000
Beginning cash and cash-equivalents	1,421,000	1,331,000
Ending cash and cash-equivalents	1,485,000	1,421,000
Supplementary disclosure of cash flow information:
Cash paid for income taxes	2,000	2,000
Cash paid for interest	282,000	77,000
Supplementary disclosure of noncash investing and financing activities:
Fair value of warrants issued to EGE as issuance costs for Series E	54,000
Fair value of modified warrants	281,000
Common stock issued in connection with debt issuance	224,000
Fully depreciated equipment disposal	$ 380,000	$ 174,000

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Issuance of Series E preferred stock, issuance costs	$ 102

Note 1 - Organization and Signi

Note 1 - Organization and Significant Accounting Policies	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Significant Accounting Policies [Text Block]	( 1 The condensed consolidated financial statements included herein have been prepared by Giga-tronics Incorporated (“Giga-tronics” or the “Company”), pursuant to the rules and regulations of the Securities and Exchange Commission. The consolidated results of operations for the interim periods shown in this report are not 10 March 31, 2018. Principles of Consolidation Derivatives Revenue Recognition and Deferred Revenue April 1, 2018, 2014 09 2015 2017 606, Revenue from Contracts with Customers (“ASC 606” not In determining the appropriate amount of revenue to be recognized as it fulfills its obligations under its agreements, the Company performs the following steps: (i) identifies the promised goods or services in the contract; (ii) determines whether the promised goods or services are performance obligations including whether they are distinct in the context of the contract; (iii) measures the transaction price, including the constraint on variable consideration; (iv) allocates the transaction price to the performance obligations based on estimated selling prices; and (v) recognizes revenue when (or as) the Company satisfies each performance obligation. The Company generates revenue through the design, manufacture, and sale of products used in defense industry to major prime defense contractors, the armed services (primarily in the U.S.) and research institutes. There is generally one not For the sale of standard or minimally customized products, the performance obligation is the series of finished products which are recognized at the points in time the units are transferred to the control of the customer, typically upon shipment. This type of revenue arrangement is typical for our commercial contracts within the Giga-tronics segment for its Advanced Signal Generation and Analysis system products used for testing RADAR and Electronic Warfare (“EW”) equipment. Performance Obligations A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC Topic 606. ● Design and manufacturing services ● Product supply – Distinct goods or services that are substantially the same ● Engineering services The majority of the Company’s contracts have a single performance obligation as the promise to transfer the individual goods or services is not not 2019 606 no $56,000. Transaction Price The Company has both fixed and variable consideration. Under the Company’s highly engineered design and manufacturing arrangements, advance payments and unit prices are considered fixed, as product is not may not Allocation of Consideration As part of the accounting for arrangements that contain multiple performance obligations, the Company must develop assumptions that require judgment to determine the stand-alone selling price of each performance obligation identified in the contract. When a contract contains more than one Timing of Recognition Significant management judgment is required to determine the level of effort required under an arrangement and the period over which the Company expects to complete its performance obligations under the arrangement. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the products or services to be provided. The Company generally uses the cost-to-cost measure of progress as this measure best depicts the transfer of control to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenue is recognized for design and manufacturing services and for engineering services over time proportionate to the costs that the Company has incurred to perform the services using the cost-to-cost input method and for products at a point in time. Approximately 99% 1% Changes in Estimates The effect of a contract modification on the transaction price and the measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue (either as an increase in or a reduction of revenue) on a cumulative catch-up basis. For contracts using the cost-to-cost method, management reviews the progress and execution of the performance obligations. This process requires management judgment relative to estimating contract revenue and cost, and making assumptions for delivery schedule. This process requires management’s judgment to make reasonably dependable cost estimates. Since certain contracts extend over a longer period of time, the impact of revisions in cost and revenue estimates during the progress of work may 99% first 2019. The aggregate effects of these changes on contracts in the first 2019 Balance Sheet Presentation The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and deferred revenue (contract liabilities) on the Condensed Consolidated Balance Sheet. Under the typical payment terms of over time contracts, the customer pays either performance-based payments or progress payments. Amounts billed and due from customers are classified as receivables on the Condensed Consolidated Balance Sheet. Interim payments may may not Remaining performance obligations represent the transaction price of firm orders for which work has not Recognition Prior to April 1, 2018 Prior to April 1, 2018 April 1, 2018 not 606 New Accounting Standards In February 2016, 2016 02 2016 02” 2016 02 one December 15, 2018. 2016 02 In May 2014, 2014 09 606” August 2015 March, April, May December 2016, 606, 606 606 606 may 606 December 15, 2017, first 2017. The Company adopted ASC 606 April 1, 2018 ( no 2017 2018 April 1, 2018. The most significant change relates to the timing of revenue and cost recognition on the Company’s customer contracts. Under ASC 606, April 1, 2018. Adopting ASC 606, may The cumulative effect of the changes made to the Company’s consolidated April 1, 2018 606 Balance at March 31, 2018 Topic ASC 606 Adjustments Balance at April 1, 2018 Assets Prepaid and other current assets $ 87 $ 188 $ 275 Inventories, net 5,487 (1,581 ) 3,906 Liabilities Deferred revenue $ 3,374 $ (2,568 ) $ 806 Stockholders' Equity Accumulated deficit $ (28,682 ) $ 1,176 $ (27,506 ) In accordance with the requirements of Topic 606, first June 30, 2018 For the first quarter ended June 30, 2018 Without ASC 606 Adoption Topic ASC 606 Adjustments As Reported Assets Prepaid and other current assets $ 149 $ 643 $ 792 Inventories, net 5,406 (1,968 ) 3,438 Liabilities Deferred revenue $ 2,966 $ (2,709 ) 257 Stockholders' Equity Accumulated deficit $ (29,177 ) $ 1,384 (27,793 ) Revenue Revenue $ 2,247 $ 596 $ 2,843 Costs of services Costs of services $ 416 $ 358 774 Net loss $ (525 ) $ (238 ) (287 ) Net loss per share, basic and fully diluted $ (0.05 ) $ 0.02 $ (0.03 )	1 Summary of Significant Accounting Policies The accompanying consolidated financial statements include the accounts of Giga-tronics Incorporated (“Giga-tronics”) and its wholly-owned subsidiary, Microsource Incorporated (“Microsource”), collectively the “Company”. The Company’s corporate office and manufacturing facilities are located in Dublin, California. Microsource develops and manufactures a broad line of YIG (Yttrium, Iron, Garnet) tuned oscillators, filters and microwave synthesizers, which are used by its customers in operational applications and in manufacturing a wide variety of microwave instruments and devices. Microsource’s two The Giga-tronics Division designs, manufactures and markets a family of modular test products for use primarily in the electronic warfare (EW) segment of the defense electronics market. These modular test products are used for the construction of test and emulation systems used to validate the performance of EW equipment. Giga-tronics Division customers include major prime defense contractors, the armed services (primarily in the U.S) and research institutes. This product platform for EW test & simulation applications (formerly referred to as “Hydra”) has been the Company’s principal new product development initiative since 2011 35 2013 2016 2013; December 2015, June 2016, 10, Principles of Consolidation Use of Estimates Fiscal Year 52 53 March. 2018 March 31, 2018 53 2017 March 25, 2017, 52 Revenue Recognition and Deferred Revenue a. It is commensurate with either of the following: 1. The Company’s performance to achieve the milestone. 2. The enhancement of the value of the delivered item or items as a result of a specific outcome resulting from the Company's performance to achieve the milestone. b. It relates solely to past performance. c. It is reasonable relative to all of the deliverables and payment terms (including other potential milestone consideration) within the arrangement. Milestones for revenue recognition are agreed upon with the customer prior to the start of the contract and some milestones are based on product shipping while others are based on design review. In fiscal 2015 $6.5 March 31, 2018 March 25, 2017, zero $478,000, On certain contracts with several of the Company’s significant customers the Company receives payments in advance of manufacturing. Advanced payments are recorded as deferred revenue until the revenue recognition criteria described above has been met. Accounts receivable are stated at their net realizable value. The Company has estimated an allowance for uncollectable accounts based on analysis of specifically identified accounts, outstanding receivables, consideration of the age of those receivables, the Company’s historical collection experience, and adjustments for other factors management believes are necessary based on perceived credit risk. The activity in the allowance account for doubtful accounts is as follows for the years ended: (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Beginning balance $ 45 $ 45 Provisions for doubtful accounts (37 ) — Write-off of doubtful accounts — — Ending balance $ 8 $ 45 Accrued Warranty one three Inventories first first not Research and Development $1.8 $2.3 March 25, 2018 March 26, 2017, Property and Equipment three ten The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not March 31, 2018, March 25, 2017, no Warrants to Purchase Common Stock 815 Derivatives and Hedging On March 26, 2018, $217,000 150,000 $50,000 Embedded Derivatives Deferred Rent Income Taxes not The Company considers all tax positions recognized in its financial statements for the likelihood of realization. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the positions taken or the amounts of the positions that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not not 50 Product Development Costs March 31, 2018 March 25, 2017. Software Development Costs Discontinued Operations 10, not 205 20.The 10, not Share-based Compensation 2018, 400,000 $0.33 4 2 fourth first 1/48 36 The cash flows resulting from the tax benefits resulting from tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) are classified as cash flows from financing in the statements of cash flows. These excess tax benefits were not March 31, 2018 March 25, 2017. In calculating compensation related to stock option grants, the fair value of each stock option is estimated on the date of grant using the Black-Scholes-Merton option-pricing model. The computation of expected volatility used in the Black-Scholes- Merton option-pricing model is based on the historical volatility of Giga-tronics’ share price. The expected term is estimated based on a review of historical employee exercise behavior with respect to option grants. The risk free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected dividend yield was not not no The fair value of restricted stock awards is based on the fair value of the underlying shares at the date of the grant. Management makes estimates regarding pre-vesting forfeitures that will impact timing of compensation expense recognized for stock option and restricted stock awards. Earnings or Loss Per Common Share not two Comprehensive Income or Loss no Financial Instruments and Concentration of Credit Risk not March 31, 2018, one 79% March 25, 2017, three 67% Fair Value of Financial Instruments and Fair Value Measurements 1 1 not 2 3 Recently Issued Accounting Standards In April 2015, 2015 03, 835 30 Simplifying the Presentation of Debt Issuance Costs 2015 03. 2015 03 not December 15, 2015, In November 2015, 2015 17 Income Taxes (Topic 740 740 December 15, 2016, December 15, 2017, December 15, 2018. may 2015 17 may In February 2016, 2016 02 2016 02” 2016 02 one December 15, 2018. 2016 02 In May 2014, 2014 09 2014 09” 2014 09 2014 09 2014 09 may 2014 09 December 15, 2017, first 2017. The Company adopted ASU 2014 09 April 1, 2018 ( no 2017 2018 April 1, 2018. While the Company is still in the process of finalizing the impact of adoption of the new standard on its financial statements, the Company has identified that the most significant change relates to the timing of its revenue recognition on its customer contracts. Under the legacy GAAP, the Company recorded revenue when there was persuasive evidence of an arrangement, delivery had occurred, the price was fixed and determinable, and collectability was reasonably assured. This occurred when products were shipped or the customer accepted title transfer. If the arrangement involved acceptance terms, the Company deferred revenue until product acceptance was received. On certain large development contracts, revenue was recognized upon achievement of substantive milestones. Advanced payments were recorded as deferred revenue until the revenue recognition criteria described above had been met. Under ASU 2014 09, April 1, 2018. Adopting ASU No. 2014 09, may

Note 2 - Going Concern and Mana

Note 2 - Going Concern and Management's Plan	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	( 2 The Company incurred net losses of $287,000 first 2019 $3.1 2018. $27.8 June 30, 2018. $945,000 $1.1 first 2019 2018, Our EW test system products have shipped to several customers, but potential delays in the refinement of features, longer than anticipated sales cycles, or the ability to efficiently manufacture our EW test system products, could significantly contribute to additional future losses and decreases in working capital. To help fund operations, the Company relies on advances under the line of credit with Bridge Bank which expires on May 6, 2019. June 30, 2018, $582,000, $143,000. In April 2017, $1.5 2018, June 2017 March 2018. March 26, 2018, $1.0 6, In order to raise additional working capital and to restructure the PFG loan, on March 26, 2018, 43,800 6.0% 15 $25.00. $1.095 $1.0 $0.25 100 13, To assist with the upfront purchases of inventory required for future product deliveries, the Company entered into advance payment arrangements with certain customers, whereby the customers reimburse the Company for raw material purchases prior to the shipment of the finished products. The Company will continue to seek similar terms in future agreements with these customers and other customers. Management will continue to review all aspects of its business including, but not Management will also continue to seek additional working capital and liquidity through debt (including debt refinancing), equity financing or possible product line sales or cessation of unprofitable business product lines, however there are no Our historical operating results and forecasting uncertainties indicate that substantial doubt exists related to our ability to continue as a going concern. Management believes that through the actions to date and possible future actions described above, we should have the necessary liquidity to continue operations at least twelve The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern and do not	2 Going Concern and Management’s Plan The Company incurred net losses of $3.1 $1.5 March 31, 2018 March 25, 2017, $28.7 March 31, 2018. $620,000 March 25, 2017, $386,000 March 31, 2018. The new EW test system products have now shipped to several customers, but potential delays in the refinement of features, longer than anticipated sales cycles, or the ability to efficiently manufacture our EW test system products, could significantly contribute to additional future losses and decreases in working capital. To help fund operations, the Company relies on advances under the line of credit with Bridge Bank. The line of credit which expired on May 7, 2017, May 6, 2019. March 31, 2018, $552,000, $77,000, During April 2017, $1.5 2018, June 2017 March 2018. March 26, 2018, $1.0 8, In order to raise additional working capital and to restructure the PFG loan, on March 26, 2018, 43,800 6.0% 15 $25.00. $1.095 $1.0 $0.25 100 19, To assist with the upfront purchases of inventory required for future product deliveries, the Company entered into advance payment arrangements with certain customers, whereby the customers reimburse the Company for raw material purchases prior to the shipment of the finished products. The Company will continue to seek similar terms in future agreements with these customers and other customers. Management will continue to review all aspects of its business including, but not Management will also continue to seek additional working capital and liquidity through debt (including debt refinancing), equity financing or possible product line sales or cessation of unprofitable business product lines, however there are no Our historical operating results and forecasting uncertainties indicate that substantial doubt exists related to our ability to continue as a going concern. Management believes that through the actions to date and possible future actions described above, we should have the necessary liquidity to continue operations at least twelve The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern and do not

Note 3 - Revenue Recognition

Note 3 - Revenue Recognition	3 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	( 3 The following table presents changes in the Company’s contract assets and liabilities for the three June 30, 2018. Balance at Beginning of the Period Additions Deductions Balance at the end of the Period (in thousands) Contract Assets $ 189 $ 466 $ 12 $ 643 Contract Liabilities: Deferred Revenue $ (806 ) $ (248 ) $ 787 $ 257 During the three June 30, 2018, Revenue recognized in the period from: Amounts included in contract liabilities at the beginning of the period: Performance obligations satisfied $ 559 New activities in the period: Changes in estimates (29 ) Performance obligations satisfied 2,313 Total services revenue $ 2,843 As of June 30, 2018, $257,000, twelve

Note 4 - Inventories

Note 4 - Inventories	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Inventory Disclosure [Text Block]	( 4 ) Inventories Inventories consisted of the following: (In thousands) June 30 , 201 8 March 31 , 201 8 Raw materials $ 1,147 $ 2,290 Work-in-progress 1,749 2,100 Finished goods 81 561 Demonstration inventory 461 536 Total $ 3,438 $ 5,487	4 Inventories Inventories consisted of the following: (Dollars in thousands) March 31 , 201 8 March 25 , 201 7 Raw materials $ 2,290 $ 1,775 Work-in-progress 2,100 2,155 Finished goods 561 473 Demonstration inventory 536 408 Total $ 5,487 $ 4,811

Note 5 - Accounts Receivable Li

Note 5 - Accounts Receivable Line of Credit	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Debt Disclosure [Text Block]	( 5 ) Accounts Receivable Line of Credit On June 1, 2015 $2.5 $2.5 $2.0 $500,000 May 23, 2017, May 7, 2017) May 6, 2019. The loan agreement is secured by all assets of the Company including intellectual property and general intangibles and provides for a borrowing capacity equal to 80% May 6, 2019 1.5% $12,500 May 2017. 150% 90 As of June 30, 2018, June 30, 2018, $552,000	7 Accounts Receivable Line of Credit On June 1, 2015, $2.5 $2.5 $2.0 $500,000 May 23, 2017, May 7, 2017) May 6, 2019. The loan agreement is secured by all assets of the Company including intellectual property and general intangibles and provides for a borrowing capacity equal to 80% May 6, 2019 1.5% 4.50% March 31, 2018 6.0% $12,500 May 2017. 150% 90 8 The line of credit requires a lockbox arrangement, which provides for receipts to be swept daily to reduce borrowings outstanding at the discretion of Bridge Bank. This arrangement, combined with the existence of the subjective acceleration clause in the line of credit agreement, necessitates the line of credit be classified as a current liability on the balance sheet. The acceleration clause allows for amounts due under the facility to become immediately due in the event of a material adverse change in the Company’s business condition (financial or otherwise), operations, properties or prospects, or ability to repay the credit based on the lender's judgment. As of March 31, 2018, $552,000, $77,000,

Note 6 - Term Loans, Revolving

Note 6 - Term Loans, Revolving Line of Credit and Warrants	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Long-term Debt [Text Block]	( 6 ) Term Loan s , Revolving Line of Credit and Warrants On April 27, 2017, $1,500,000 April 28, 2017 ( “2017 2017 April 27, 2019, 2017 16% 9.5% 6.5% $100,000 $76,000 April 27, 2017, $24,000 $1,000 first Additionally, the 2017 250,000 190,000 April 27, 2017) 60,000 2,500 first 2017 2017 2017 5, The requirement to issue 60,000 815 15 25. not The proceeds received upon issuing the loan were allocated to: i) common stock, for the fair value of the 190,000 $1,576,000 $1,500,000 $76,000. $326,000, Fees paid to the lender and third parties $ 44,000 Back-end fee 76,000 Estimated fair value of embedded equity forward 49,000 Fair value of 190,000 shares of common stock issued to lender 157,000 Aggregate discount amount $ 326,000 The bifurcated embedded derivative and the debt discount are presented net with the related loan balance in the consolidated balance sheets. The debt discount is being amortized to interest expense over the loan’s term using the effective interest method. During the fiscal year ended March 31, 2018, $127,000 June 30, 2018, 375,000 PFG’s ability to call the debt on default (contingent put) and its ability to assess interest rate at a default rate (contingent interest) are embedded derivatives, which the Company evaluated. The fair value of these embedded features was determined to be immaterial and was not Between June 24, 2017 March 25, 2018, not 22% On March 26, 2018, 13 $1.7 2017 $1.0 16%, 2014 260,000 $1.42 $0.25 one March 13, 2020. The amendments to the 2017 $43,700, 2017 2017 The Company anticipates it will need to seek additional funds through the issuance of new debt, equity securities or product line sales in order to repay the 2017 no	8 Term Loans, Revolving Line of Credit and Warrants 2017 On April 27, 2017, $1,500,000 April 28, 2017 ( “2017 2017 April 27, 2019, 2017 16% 9.5% 6.5% $100,000 $76,000 April 27, 2017, $24,000 $1,000 first 2018, 25 Additionally, the 2017 250,000 190,000 April 27, 2017) 60,000 2,500 first 2017 2017 2017 7, The requirement to issue 60,000 815 15 25. not The proceeds received upon issuing the loan was allocated to: i) common stock, for the fair value of the 190,000 $1,576,000 $1,500,000 $76,000. $326,000, Fees paid to the lender and third parties $ 44,000 Back-end fee 76,000 Estimated fair value of embedded equity forward 49,000 Fair value of 190,000 shares of common stock issued to lender 157,000 Aggregate discount amount $ 326,000 The bifurcated embedded derivative and the debt discount are presented net with the related loan balance in the consolidated balance sheets. The debt discount is amortized to interest expense over the loan’s term using the effective interest method. During the fiscal year ended March 31, 2018, $127,000 March 31, 2018, 367,500 PFG’s ability to call the debt on default (contingent put) and its ability to assess interest rate at a default rate (contingent interest) are embedded derivatives, which the Company evaluated. The fair value of these embedded features was determined to be immaterial and was not Between June 24, 2017 March 25, 2018, not 22% On March 26, 2018, 19 $1.7 2017 $1.0 16%, 2014 260,000 2014 $1.42 $0.25 one March 13, 2020. The amendments to the 2017 $43,700, 2017 2017 The Company anticipates it will need to seek additional funds through the issuance of new debt, equity securities or product line sales in order to repay the 2017 no 2014 On March 13, 2014, three $2.0 $1.0 March 14, 2014. On June 16, 2014, $500,000, June 17, 2014. thirty-three $1.0 $500,000. $1.0 9.75% first six thirty 12.50% March 13, 2017 On June 3, 2015, $500,000 June 2014 $150,000 $500,000 July 2015. $10,000 March 26, 2016, $500,000 June 2014 $500,000 $1.0 March 25, 2017. The Company paid a loan fee of $30,000 $15,000 June 2014 300,000 180,000 $1.0 80,000 40,000 five $1.42 If the warrants are not March 13, 2019, $150,000 $67,000 As of March 25, 2017, $133,000 $89,000, $222,000. March 26, 2018, 150,000 $50,000 The initial $1.0 $822,000 $178,000, $178,000 March 25, 2017 $1.0 The proceeds from the $500,000 $365,000 $135,000, $135,000 March 26, 2016 $500,000 For the fiscal year ended March 25, 2017, $22,000.

Note 7 - Fair Value

Note 7 - Fair Value	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Fair Value Disclosures [Text Block]	( 7 ) Fair Value Pursuant to the accounting guidance for fair value measurement and its subsequent updates, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a hierarchy for inputs used in measuring fair value that minimizes the use of unobservable inputs by requiring the use of observable market data when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on active market data. Unobservable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances. The fair value hierarchy is broken down into the three • Level 1 1 • Level 2 2 • Level 3 no The carrying amounts of the Company’s cash and cash-equivalents and line of credit approximate their fair values at each balance sheet date due to the short-term maturity of these financial instruments, and generally result in inputs categorized as Level 1 2 On March 26, 2018, 150,000 0.96 85%, 2.12%, no There were no no June 30, 2018 March 31, 2018.	9 Fair Value Pursuant to the accounting guidance for fair value measurement and its subsequent updates, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a hierarchy for inputs used in measuring fair value that minimizes the use of unobservable inputs by requiring the use of observable market data when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on active market data. Unobservable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances. The fair value hierarchy is broken down into the three • Level 1 1 • Level 2 2 • Level 3 no The carrying amounts of the Company’s cash and cash-equivalents and line of credit approximate their fair values at each balance sheet date due to the short-term maturity of these financial instruments, and generally result in inputs categorized as Level 1 2 The Company’s derivative warrant liability is measured at fair value on a recurring basis and is categorized as Level 3 March 25, 2017, March 25, 2017: ( 2.0 101.1%, 1.26%, 24%. March 31, 2019. 1 2 3 On March 26, 2018, 150,000 0.96 85%, 2.12%, no The aforementioned warrant liability and equity forward are the Company’s only asset and liability recognized and measured at fair value on a recurring or non-recurring basis and are as follows: Fair Value Measurements as of March 31, 2018 (In Thousands): Level 1 Level Level 3 Warrant Liability $ — — $ — Total $ — — $ — Fair Value Measurements as of March 25, 2017 (In Thousands): Level 1 Level Level 3 Warrant Liability $ — — $ 222 Total $ — $ — $ 222 There were no 1, 2 3 March 31, 2018 March 25, 2017. The following table provides a reconciliation of the warrant liability measured at fair value using significant unobservable inputs (Level 3 March 25, 2017 March 31, 2018: Years Ended (In thousands) Mar. 31 , 201 8 Mar. 2 5 , 201 7 Warrant liability at beginning of year $ 222 $ 353 Change in fair value of warrant liability (222 ) (131 ) Warrant liability at end of period $ — $ 222

Note 8 - Loss Per Share

Note 8 - Loss Per Share	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	( 8 ) Loss Per Share Basic loss per share (EPS) is calculated by dividing net income or loss by the weighted average common shares outstanding during the period. Diluted EPS reflects the net incremental shares that would be issued if unvested restricted shares became vested and dilutive outstanding stock options were exercised, using the treasury stock method. In the case of a net loss, it is assumed that no Three Months Ended (In thousands ) June 30, 2018 June 24, 2017 (in thousands): Common shares issuable upon exercise of stock options 1,498 1,104 Restricted stock awards 262 350 Issuable shares for interest on loan 25 60 Common shares issuable upon conversion of convertible preferred stock 7,113 1,853 Common shares issuable upon exercise of warrants 3,960 3,737 The stock options, restricted stock, convertible preferred stocks and warrants not three June 30, 2018 June 24, 2017	13 Loss per Common Share The stock options, restricted stock, convertible preferred stocks and warrants not March 31, 2018 March 25, 2017 Stock options not included in computation that could potentially dilute EPS in the future 1,479 1,105 Restricted stock awards not included in computation that could potentially dilute EPS in the future 300 — Convertible preferred stock not included in computation that could potentially dilute EPS in the future 1,858 1,853 Warrants not included in computation that could potentially dilute EPS in the future 3,960 3,737 7,597 6,695 The stock options, restricted stock, convertible preferred stocks and warrants not March 31, 2018 March 25, 2017

Note 9 - Share Based Compensati

Note 9 - Share Based Compensation	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	( 9 ) S tock Based Compensation The Company has established the 2005 2,850,000 100% 2005 2025. 2000 no one four five not 10 may June 30, 2018, no June 30, 2018, 437,677. ten Stock Options In calculating compensation related to stock option grants, the fair value of each stock option was estimated on the date of grant using the Black-Scholes-Merton option-pricing model and the following weighted average assumptions: Three Months Ended June 30, 2018 June 2 4 , 2017 Dividend yield — — Expected volatility 92.55 % — Risk-free interest rate 2.82 % — Expected term (years) 8.36 — The computation of expected volatility used in the Black-Scholes-Merton option-pricing model is based on the historical volatility of the Company’s share price. The expected term is estimated based on a review of historical employee exercise behavior with respect to option grants. The risk-free interest rate is based on the U.S. Treasury rates with maturity similar to the expected term of the option on the date of grant. A summary of the changes in stock options outstanding for the three June 30, 2018 March 31, 2018 Weighted Average Weighted Average Remaining Aggregate Shares Exercise Price per share Contractual Terms (Years) Intrinsic Value Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Granted 50,000 0.27 10.0 Forfeited / Expired (31,000 ) 1.41 Outstanding at June 30, 2018 1,497,700 $ 0.53 7.8 $ — Exercisable at June 30, 2018 500,650 $ 0.79 4.4 $ — At June 30, 2018 expected to vest in the future 702,491 $ 0.40 9.6 $ — As of June 30, 2018, $205,000 3.71 7,200 June 30, 2018, 26,500 June 24, 2017. June 30, 2018 June 24, 2017 $9,052 $33,000 no three June 30, 2018 June 24, 2017. three June 30, 2018 June 24, 2017 $20,000 $37,000, Restricted Stock The Company granted no first 2019. No first 2018. June 30, 2018, $61,000 0.87 three June 30, 2018 June 24, 2017 $37,000 $9,000, A summary of the changes in non-vested RSAs outstanding for the three June 30, 2018 March 31, 2018 Shares Weighted Average Fair Value Non-Vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-Vested at March 31, 2018 299,950 $ 0.65 Vested (37,500 ) (0.39 ) Non-Vested at June 30, 2018 262,450 $ 0.68	15 Share-based Compensation and Employee Benefit Plans Share-based Compensation 2005 2,850,000 100% 2014, 2005 2025. one four five not 10 may March 31, 2018, no March 31, 2018, 456,677. ten Stock Options The weighted average grant date fair value of stock options granted during the fiscal years ended March 31, 2018 March 25, 2017 $0.93 $0.83, Fiscal years ended March 31, 2018 March 25, 2017 Dividend yield — — Expected volatility 91 % 99 % Risk-free interest rate 2.40 % 1.45 % Expected term (years) 8.35 8.36 A summary of the changes in stock options outstanding for the fiscal years ended March 31, 2018 March 25, 2017 Weighted Weighted Average Remaining (Dollars in thousands except share prices) Shares Average Exercise Price per share Contractual Term (Years) Aggregate Intrinsic Value Outstanding at March 26, 2016 1,592,200 $ 1.52 6.8 $ 69 Granted 148,000 0.97 Exercised — — Forfeited / Expired (635,700 ) 1.57 Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Exercised — — Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Exercisable at March 31, 2018 524,450 $ 0.81 4.8 $ — At March 31, 2018, expected to vest in the future 671,805 $ 0.42 9.8 $ — As of March 31, 2018, $215,000 2005 2005 3.9 143,900 272,500 March 31, 2018 March 25, 2017, March 31, 2018 March 25, 2017 $163,000 $315,000, no 2018 2017. March 31, 2018 March 25, 2017 $251,000 $257,000, Restricted Stock The Company granted 586,950 March 31, 2018. 44,500 2017. March 31, 2018, $97,000 0.89 2018 2017 $107,000 $29,000, A summary of the changes in non-vested restricted stock awards outstanding for the fiscal years ended March 31, 2018 March 25, 2017 Shares Weighted Average Grant Date Fair Value Non-vested at March 26, 2016 — $ — Granted 44,500 0.66 Vested (44,500 ) 0.66 Forfeited or cancelled — — Non-vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-vested at March 31, 2018 299,950 $ 0.65 401 401 may 100% four 2018 2017 $27,000 $33,000,

Note 10 - Significant Customer

Note 10 - Significant Customer and Industry Segment Information	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	( 1 0 ) Significant Customer and Industry Segment Information The Company has two ● The Giga-tronics Division historically produced a broad line of test and measurement equipment used primarily for the design, production, repair and maintenance of products in aerospace, telecommunications, RADAR, and electronic warfare. The Company completed the divestiture of its switch and legacy product lines, and is now solely focused on producing the ASG and the ASA. ● Microsource primarily develops and manufactures YIG RADAR filters used in fighter jet aircraft for two The tables below present information for the two Three Month Periods Ended Three Month Periods Ended (In thousands) At June 30 , 201 8 June 30 , 201 8 At June 2 4 , 201 7 June 2 4 , 201 7 Assets Net Sales Net Income (Loss) Assets Net Sales Net Income (Loss) Giga-tronics Division $ 4,418 $ 38 $ (1559 ) $ 6,153 $ 297 $ (1,849 ) Microsource 1,953 1,061 1,272 2,907 1,694 591 Total $ 6,371 $ 1,099 $ (287 ) $ 9,060 $ 1,991 $ (1,258 ) During the first 2019, one 64% second 31% first 2018, one 43% second 37%	12 Significant Customers and Industry Segment Information The Company has two two The Giga-tronics Division designs, manufactures and markets a family of modular test products for use primarily in the electronic warfare (EW) segment of the defense electronics market. These modular test products are used for the construction of test and emulation systems used to validate the performance of EW equipment. Giga-tronics Division customers include major prime defense contractors, the armed services (primarily in the U.S) and research institutes. This product platform for EW test & simulation applications (formerly referred to as “Hydra”) has been the Company’s principal new product development initiative since 2011 35 2013 2016 The accounting policies for the segments are the same as those described in the "Summary of Significant Accounting Policies". The Company evaluates the performance of its segments and allocates resources to them based on earnings before income taxes. Segment net sales include sales to external customers. Inter-segment activities are eliminated in consolidation. Assets include accounts receivable, inventories, equipment, cash, deferred income taxes, prepaid expenses and other long- term assets. The Company accounts for inter-segment sales and transfers at terms that allow a reasonable profit to the seller. During the periods reported there were no The Company's reportable operating segments are strategic business units that offer different products and services. They are managed separately because each business utilizes different technology and requires different accounting systems. The Company’s chief operating decision maker is considered to be the Company’s Chief Executive Officer (“CEO”). The CEO reviews financial information presented on a consolidated basis accompanied by disaggregated information about revenues and pre-tax income or loss by operating segment. The tables below present information for the fiscal years ended in 2018 2017. March 31 , 201 8 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 2,737 $ 7,063 $ 9,800 Interest expense, net (461 ) — (461 ) Depreciation and amortization 1,116 1 1,117 Capital expenditures (688 ) — (688 ) Income/(Loss) before income taxes (5,847 ) 2,748 (3,099 ) Assets 5,253 3,178 8,431 March 2 5 , 201 7 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 8,021 $ 8,246 $ 16,267 Interest expense, net 133 — 133 Depreciation and amortization 820 7 827 Capital expenditures 41 — 41 Income/(Loss) before income taxes (2,702 ) 1,158 (1,544 ) Assets 6,433 2,641 9,074 The Company’s Giga-tronics Division and Microsource segments sell to agencies of the U.S. government and U.S. defense- related customers. In fiscal 2018 2017, 88% 78% 2018, 29% second 20% 2018 third 41% During fiscal 2017, 33% second 20% 2017 third 14% Export sales accounted for 8% 2% 2018 2017, (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Americas $ — $ — Europe 40 249 Asia — 15 Rest of world 702 64 Total $ 742 $ 328

Note 11 - Income Taxes

Note 11 - Income Taxes	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	( 1 1 ) Income Taxes The Company accounts for income taxes using the asset and liability method as codified in Topic 740. The Company recorded $62,000 three June 30, 2018 no three June 24, 2017. April 2018, $62,000, $45,000 $107,000. three June 30, 2018 June 24, 2017 0% As of June 30, 2018, $122,000 not 12 On December 22, 2017, 35% 21% January 1, 2018, December 31, 2017. not 0%,	14 Income Taxes Following are the components of the provision for income taxes for fiscal years ended: March 31, March 25, (in thousands) 2018 2017 Current Federal $ — $ — State 2 2 2 2 Deferred Federal 5,547 (496 ) State (393 ) (6 ) 5,154 (502 ) Change in liability for uncertain tax positions 2 14 Change in valuation allowance (5,156 ) 488 Provision for income taxes $ 2 $ 2 The tax effects of temporary differences that give rise to significant portions of the deferred tax assets are as follows: Fiscal years ended (In thousands) March 31 , 201 8 March 2 5 , 201 7 Net operating loss carryforwards $ 11,472 $ 15,984 Income tax credits 347 323 Inventory reserves and additional costs capitalized 787 1,450 Accrued vacation 40 109 Deferred rent 136 — Non-qualified stock options and restricted stock 2 5 Other 77 146 Total deferred tax assets 12,861 18,017 Valuation allowance (12,861 ) (18,017 ) Net deferred tax assets $ — $ — On December 22, 2017, 1986, 35% 21% December 31, 2017. March 26, 2017 March 31, 2018, 31.55% 2017 As a result of the enactment of the TCJ Act, the Company’s deferred tax assets and liabilities were remeasured using the new corporate tax rate, resulting in a $5.2 The following summarizes the difference between the income tax expense and the amount computed by applying the statutory federal income tax rates of 31.55% 34%, March 31, 2018 March 25, 2017, March 31, 2018 March 25, 2017: Fiscal years ended (In thousands except percentages) March 31 , 20 1 8 March 2 5 , 201 7 Statutory federal income tax (benefit) $ (955 ) 31.6 % $ (525 ) 34.0 % Valuation allowance (5,156 ) 170.1 488 (31.6 ) Effect of reduced corporate tax rates 6,207 (205.3 ) — — State income tax, net of federal benefit (177 ) 5.9 (90 ) 5.8 Net operating loss expiration — — 86 (5.6 ) Non-tax deductible expenses 46 (1.5 ) 77 (5.0 ) Tax credits (4 ) 0.1 (40 ) 2.6 Liability for uncertain tax positions — — 14 (0.9 ) Other 41 (0.9 ) (8 ) 0.5 Effective income tax $ 2 — $ 2 (0.2 )% The decrease in valuation allowance from March 25, 2017 March 31, 2018 $5,156,000. As of March 31, 2018, $46,539,000 $24,322,000 2023 2038 2028 2038, may 382. December 31, 2017. 2032 2038 The Company has recorded a valuation allowance to reflect the estimated amount of deferred tax assets, which may not As of March 31, 2018, $122,000 not The Company files U.S federal and California state tax returns. The Company is generally no 2013 2012 not no A reconciliation of the beginning and ending amount of the liability for uncertain tax positions, excluding potential interest and penalties, is as follows: Fiscal Year s (In thousands) 2018 2017 Balance as of beginning of year $ 120 $ 106 Additions based on current year tax positions 2 14 (Reductions) additions for prior year tax positions — — Balance as of end of year $ 122 $ 120 The total amount of interest and penalties related to unrecognized tax benefits at March 31, 2018 not not not twelve 12

Note 12 - Warranty Obligations

Note 12 - Warranty Obligations	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	( 1 2 ) Warranty Obligations The Company records a liability in cost of sales for estimated warranty obligations at the date products are sold. Adjustments are made as new information becomes available. The following provides a reconciliation of changes in the Company’s warranty reserve. The Company provides no (In thousands) Three Months Ended June 30 , 201 8 Three Months Ended June 2 4 , 201 7 Balance at beginning of period $ 164 $ 123 Provision, net 6 1 Warranty costs incurred (29 ) (33 ) Balance at end of period $ 141 $ 91	17 Warranty Obligations The Company records a liability in cost of sales for estimated warranty obligations at the date products are sold. Adjustments are made as new information becomes available. The following provides a reconciliation of changes in the Company’s warranty reserve. The Company provides no (In thousands) March 31 , 201 8 March 2 5 , 201 7 Balance as of beginning of year $ 123 $ 60 Provision, net 291 234 Warranty costs incurred (250 ) (171 ) Balance as of end of year $ 164 $ 123

Note 13 - Preferred Stock and W

Note 13 - Preferred Stock and Warrants	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Preferred Stock [Text Block]	( 1 3 ) Preferred Stock and Warrants Series E Senior Convertible Voting Perpetual Preferred Stock On March 26, 2018, 43,800 6.0% 15 March 28, 2018. The purchase price for each Series E Share was $25.00. $1.095 $1.0 5% $57,000 5% 223,000 $0.25 Each Series E Share is initially convertible (at the option of the holder) at a conversion price of $0.25 100 March 31, 2018, 43,800 4,380,000 31% 27% 22% 300% $75.00 Each Series E Share has a liquidation preference of 150% $37.50, Holders of Series E Shares are entitled to receive, when, as and if declared by the Company’s Board of Directors, cumulative preferential dividends, payable semiannual in cash at a rate per annum equal to 6.0% $25.00 10 Holders of Series E Shares generally vote together with the common stock on an as-converted basis on each matter submitted to the vote or approval of the holders of common stock, and vote as a separate class with respect to certain actions that adversely affect the rights of the holders of Series E Shares and on other matters as required by law. In addition, the approval of the Holders of the Series E shares is generally required prior to the Company’s issuance of any securities having rights senior to or in parity with the Series E Shares with respect to dividends or liquidation preferences. The Series E Shares’ right to approve parity securities will terminate at such time that ( 1 22,300 50% first 2 20 30 $0.75 30 100,000 144 1933, The Company and each Series E investor entered into an Investor Rights Agreement. Under this agreement, the Company agreed to, among other things, use best efforts to file certain registration statements for the resale of common stock of the Company that the investor may may two not 66.6% $1.7 8 In connection with the sale of Series E Shares, the Company agreed to reduce the exercise price of certain warrants issued in connection with the Company’s private placement in January 2016 ( 18 2,787,872 “2016 2016 0.75 $1.15 2016 2016 $1.15 $0.25 2016 $200,000 50% 2016 2016 $0.25, 2016 $200,000 50% January 2016 2016 $0.25. 1,759,268 2016 $0.25. The fair value attributable to re-pricing the 2016 2016 $203,000, $557,000, In addition, warrants to purchase 292,727 $1.15 $0.25 $53,000 For the three June 30, 2018, 8,800 $25.00 $220,000. The table below presents information as of June 30, 2018 March 31, 2018: Preferred Stock Shares Shares Shares Liquidation Preference Designated Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183 Series E 9,600.00 9,600.00 360 Total at June 30, 2018 79,500.00 71,933.51 71,933.51 $ 5,413	19 Preferred Stock and Warrants Series E Senior Convertible Voting Perpetual Preferred Stock On March 26, 2018, 43,800 6.0% 15 March 28, 2018. The purchase price for each Series E Share was $25.00. $1.095 $1.0 5% $57,000 5% 223,000 $0.25 Each Series E Share is initially convertible (at the option of the holder) at a conversion price of $0.25 100 March 31, 2018, 43,800 4,380,000 31% 27% 22% 300% $75.00 Each Series E Share has a liquidation preference of 150% $37.50, Holders of Series E Shares are entitled to receive, when, as and if declared by the Company’s Board of Directors, cumulative preferential dividends, payable semiannual in cash at a rate per annum equal to 6.0% $25.00 10 Holders of Series E Shares generally vote together with the common stock on an as-converted basis on each matter submitted to the vote or approval of the holders of common stock, and vote as a separate class with respect to certain actions that adversely affect the rights of the holders of Series E Shares and on other matters as required by law. In addition, the approval of the Holders of the Series E shares is generally required prior to the Company’s issuance of any securities having rights senior to or in parity with the Series E Shares with respect to dividends or liquidation preferences. The Series E Shares’ right to approve parity securities will terminate at such time that ( 1 22,300 50% first 2 20 30 $0.75 30 100,000 144 1933, The Company and each Series E investor entered into an Investor Rights Agreement. Under this agreement, the Company agreed to, among other things, use best efforts to file certain registration statements for the resale of common stock of the Company that the investor may may two not 66.6% $1.7 8 In connection with the sale of Series E Shares, the Company agreed to reduce the exercise price of certain warrants issued in connection with the Company’s private placement in January 2016 ( 18 2,787,872 “2016 2016 0.75 $1.15 2016 2016 $1.15 $0.25 2016 $200,000 50% 2016 2016 $0.25, 2016 $200,000 50% January 2016 2016 $0.25. 1,759,268 2016 $0.25. The fair value attributable to re-pricing the 2016 2016 $203,000, $557,000, In addition, warrants to purchase 292,727 $1.15 $0.25 $53,000 Series B, C, D Convertible Voting Perpetual Preferred Stock and Warrants On November 10, 2011, $2,199,000 October 31, 2011. 9,997 $220 $2.0 $202,000 no On February 19, 2013, 3,424.65 $500,000, $146.00 $457,000 $43,000. no On July 8, 2013 $817,000 5,111.86 511,186 $1.43 $858,000 $498,000 $41,000 $360,000 $498,000 $0.97 $238,000 Each share of Series B, Series C and Series D Preferred Stock is convertible into one hundred 1,017,405 $1.43 February 2015, May 2015. February 16, 2015 February 23, 2015. 1,002,818 $1.43 $1,434,000, $42,000 two 898,634 194,437 $1.78 $1.76 $137,000 $0.125 five may 14,587 February May 14, 2015, 14,587 7,216 The table below presents information for the fiscal years ended March 31, 2018 March 25, 2017: Preferred Stock As of March 31 , 201 8 and March 2 5 , 201 7 Designated Shares Shares Liquidation Preference Shares Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Total at March 25, 2017 19,500.00 18,533.51 18,533.51 3,540 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183

Note 14 - Subsequent Events

Note 14 - Subsequent Events	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	( 1 4 ) Subsequent Events During August 2018, 1,400 $25.00 $35,000.	20 Subsequent Events During April 2018, 6,000 $25.00 $150,000. During May 2018, 2,400 $25.00 $60,000.

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Significant Accounting Policies [Text Block]	( 1 The condensed consolidated financial statements included herein have been prepared by Giga-tronics Incorporated (“Giga-tronics” or the “Company”), pursuant to the rules and regulations of the Securities and Exchange Commission. The consolidated results of operations for the interim periods shown in this report are not 10 March 31, 2018. Principles of Consolidation Derivatives Revenue Recognition and Deferred Revenue April 1, 2018, 2014 09 2015 2017 606, Revenue from Contracts with Customers (“ASC 606” not In determining the appropriate amount of revenue to be recognized as it fulfills its obligations under its agreements, the Company performs the following steps: (i) identifies the promised goods or services in the contract; (ii) determines whether the promised goods or services are performance obligations including whether they are distinct in the context of the contract; (iii) measures the transaction price, including the constraint on variable consideration; (iv) allocates the transaction price to the performance obligations based on estimated selling prices; and (v) recognizes revenue when (or as) the Company satisfies each performance obligation. The Company generates revenue through the design, manufacture, and sale of products used in defense industry to major prime defense contractors, the armed services (primarily in the U.S.) and research institutes. There is generally one not For the sale of standard or minimally customized products, the performance obligation is the series of finished products which are recognized at the points in time the units are transferred to the control of the customer, typically upon shipment. This type of revenue arrangement is typical for our commercial contracts within the Giga-tronics segment for its Advanced Signal Generation and Analysis system products used for testing RADAR and Electronic Warfare (“EW”) equipment. Performance Obligations A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC Topic 606. ● Design and manufacturing services ● Product supply – Distinct goods or services that are substantially the same ● Engineering services The majority of the Company’s contracts have a single performance obligation as the promise to transfer the individual goods or services is not not 2019 606 no $56,000. Transaction Price The Company has both fixed and variable consideration. Under the Company’s highly engineered design and manufacturing arrangements, advance payments and unit prices are considered fixed, as product is not may not Allocation of Consideration As part of the accounting for arrangements that contain multiple performance obligations, the Company must develop assumptions that require judgment to determine the stand-alone selling price of each performance obligation identified in the contract. When a contract contains more than one Timing of Recognition Significant management judgment is required to determine the level of effort required under an arrangement and the period over which the Company expects to complete its performance obligations under the arrangement. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the products or services to be provided. The Company generally uses the cost-to-cost measure of progress as this measure best depicts the transfer of control to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenue is recognized for design and manufacturing services and for engineering services over time proportionate to the costs that the Company has incurred to perform the services using the cost-to-cost input method and for products at a point in time. Approximately 99% 1% Changes in Estimates The effect of a contract modification on the transaction price and the measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue (either as an increase in or a reduction of revenue) on a cumulative catch-up basis. For contracts using the cost-to-cost method, management reviews the progress and execution of the performance obligations. This process requires management judgment relative to estimating contract revenue and cost, and making assumptions for delivery schedule. This process requires management’s judgment to make reasonably dependable cost estimates. Since certain contracts extend over a longer period of time, the impact of revisions in cost and revenue estimates during the progress of work may 99% first 2019. The aggregate effects of these changes on contracts in the first 2019 Balance Sheet Presentation The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and deferred revenue (contract liabilities) on the Condensed Consolidated Balance Sheet. Under the typical payment terms of over time contracts, the customer pays either performance-based payments or progress payments. Amounts billed and due from customers are classified as receivables on the Condensed Consolidated Balance Sheet. Interim payments may may not Remaining performance obligations represent the transaction price of firm orders for which work has not Recognition Prior to April 1, 2018 Prior to April 1, 2018 April 1, 2018 not 606 New Accounting Standards In February 2016, 2016 02 2016 02” 2016 02 one December 15, 2018. 2016 02 In May 2014, 2014 09 606” August 2015 March, April, May December 2016, 606, 606 606 606 may 606 December 15, 2017, first 2017. The Company adopted ASC 606 April 1, 2018 ( no 2017 2018 April 1, 2018. The most significant change relates to the timing of revenue and cost recognition on the Company’s customer contracts. Under ASC 606, April 1, 2018. Adopting ASC 606, may The cumulative effect of the changes made to the Company’s consolidated April 1, 2018 606 Balance at March 31, 2018 Topic ASC 606 Adjustments Balance at April 1, 2018 Assets Prepaid and other current assets $ 87 $ 188 $ 275 Inventories, net 5,487 (1,581 ) 3,906 Liabilities Deferred revenue $ 3,374 $ (2,568 ) $ 806 Stockholders' Equity Accumulated deficit $ (28,682 ) $ 1,176 $ (27,506 ) In accordance with the requirements of Topic 606, first June 30, 2018 For the first quarter ended June 30, 2018 Without ASC 606 Adoption Topic ASC 606 Adjustments As Reported Assets Prepaid and other current assets $ 149 $ 643 $ 792 Inventories, net 5,406 (1,968 ) 3,438 Liabilities Deferred revenue $ 2,966 $ (2,709 ) 257 Stockholders' Equity Accumulated deficit $ (29,177 ) $ 1,384 (27,793 ) Revenue Revenue $ 2,247 $ 596 $ 2,843 Costs of services Costs of services $ 416 $ 358 774 Net loss $ (525 ) $ (238 ) (287 ) Net loss per share, basic and fully diluted $ (0.05 ) $ 0.02 $ (0.03 )	1 Summary of Significant Accounting Policies The accompanying consolidated financial statements include the accounts of Giga-tronics Incorporated (“Giga-tronics”) and its wholly-owned subsidiary, Microsource Incorporated (“Microsource”), collectively the “Company”. The Company’s corporate office and manufacturing facilities are located in Dublin, California. Microsource develops and manufactures a broad line of YIG (Yttrium, Iron, Garnet) tuned oscillators, filters and microwave synthesizers, which are used by its customers in operational applications and in manufacturing a wide variety of microwave instruments and devices. Microsource’s two The Giga-tronics Division designs, manufactures and markets a family of modular test products for use primarily in the electronic warfare (EW) segment of the defense electronics market. These modular test products are used for the construction of test and emulation systems used to validate the performance of EW equipment. Giga-tronics Division customers include major prime defense contractors, the armed services (primarily in the U.S) and research institutes. This product platform for EW test & simulation applications (formerly referred to as “Hydra”) has been the Company’s principal new product development initiative since 2011 35 2013 2016 2013; December 2015, June 2016, 10, Principles of Consolidation Use of Estimates Fiscal Year 52 53 March. 2018 March 31, 2018 53 2017 March 25, 2017, 52 Revenue Recognition and Deferred Revenue a. It is commensurate with either of the following: 1. The Company’s performance to achieve the milestone. 2. The enhancement of the value of the delivered item or items as a result of a specific outcome resulting from the Company's performance to achieve the milestone. b. It relates solely to past performance. c. It is reasonable relative to all of the deliverables and payment terms (including other potential milestone consideration) within the arrangement. Milestones for revenue recognition are agreed upon with the customer prior to the start of the contract and some milestones are based on product shipping while others are based on design review. In fiscal 2015 $6.5 March 31, 2018 March 25, 2017, zero $478,000, On certain contracts with several of the Company’s significant customers the Company receives payments in advance of manufacturing. Advanced payments are recorded as deferred revenue until the revenue recognition criteria described above has been met. Accounts receivable are stated at their net realizable value. The Company has estimated an allowance for uncollectable accounts based on analysis of specifically identified accounts, outstanding receivables, consideration of the age of those receivables, the Company’s historical collection experience, and adjustments for other factors management believes are necessary based on perceived credit risk. The activity in the allowance account for doubtful accounts is as follows for the years ended: (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Beginning balance $ 45 $ 45 Provisions for doubtful accounts (37 ) — Write-off of doubtful accounts — — Ending balance $ 8 $ 45 Accrued Warranty one three Inventories first first not Research and Development $1.8 $2.3 March 25, 2018 March 26, 2017, Property and Equipment three ten The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not March 31, 2018, March 25, 2017, no Warrants to Purchase Common Stock 815 Derivatives and Hedging On March 26, 2018, $217,000 150,000 $50,000 Embedded Derivatives Deferred Rent Income Taxes not The Company considers all tax positions recognized in its financial statements for the likelihood of realization. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the positions taken or the amounts of the positions that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not not 50 Product Development Costs March 31, 2018 March 25, 2017. Software Development Costs Discontinued Operations 10, not 205 20.The 10, not Share-based Compensation 2018, 400,000 $0.33 4 2 fourth first 1/48 36 The cash flows resulting from the tax benefits resulting from tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) are classified as cash flows from financing in the statements of cash flows. These excess tax benefits were not March 31, 2018 March 25, 2017. In calculating compensation related to stock option grants, the fair value of each stock option is estimated on the date of grant using the Black-Scholes-Merton option-pricing model. The computation of expected volatility used in the Black-Scholes- Merton option-pricing model is based on the historical volatility of Giga-tronics’ share price. The expected term is estimated based on a review of historical employee exercise behavior with respect to option grants. The risk free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected dividend yield was not not no The fair value of restricted stock awards is based on the fair value of the underlying shares at the date of the grant. Management makes estimates regarding pre-vesting forfeitures that will impact timing of compensation expense recognized for stock option and restricted stock awards. Earnings or Loss Per Common Share not two Comprehensive Income or Loss no Financial Instruments and Concentration of Credit Risk not March 31, 2018, one 79% March 25, 2017, three 67% Fair Value of Financial Instruments and Fair Value Measurements 1 1 not 2 3 Recently Issued Accounting Standards In April 2015, 2015 03, 835 30 Simplifying the Presentation of Debt Issuance Costs 2015 03. 2015 03 not December 15, 2015, In November 2015, 2015 17 Income Taxes (Topic 740 740 December 15, 2016, December 15, 2017, December 15, 2018. may 2015 17 may In February 2016, 2016 02 2016 02” 2016 02 one December 15, 2018. 2016 02 In May 2014, 2014 09 2014 09” 2014 09 2014 09 2014 09 may 2014 09 December 15, 2017, first 2017. The Company adopted ASU 2014 09 April 1, 2018 ( no 2017 2018 April 1, 2018. While the Company is still in the process of finalizing the impact of adoption of the new standard on its financial statements, the Company has identified that the most significant change relates to the timing of its revenue recognition on its customer contracts. Under the legacy GAAP, the Company recorded revenue when there was persuasive evidence of an arrangement, delivery had occurred, the price was fixed and determinable, and collectability was reasonably assured. This occurred when products were shipped or the customer accepted title transfer. If the arrangement involved acceptance terms, the Company deferred revenue until product acceptance was received. On certain large development contracts, revenue was recognized upon achievement of substantive milestones. Advanced payments were recorded as deferred revenue until the revenue recognition criteria described above had been met. Under ASU 2014 09, April 1, 2018. Adopting ASU No. 2014 09, may

Note 2 - Going Concern and Ma_2

Note 2 - Going Concern and Management's Plan	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	( 2 The Company incurred net losses of $287,000 first 2019 $3.1 2018. $27.8 June 30, 2018. $945,000 $1.1 first 2019 2018, Our EW test system products have shipped to several customers, but potential delays in the refinement of features, longer than anticipated sales cycles, or the ability to efficiently manufacture our EW test system products, could significantly contribute to additional future losses and decreases in working capital. To help fund operations, the Company relies on advances under the line of credit with Bridge Bank which expires on May 6, 2019. June 30, 2018, $582,000, $143,000. In April 2017, $1.5 2018, June 2017 March 2018. March 26, 2018, $1.0 6, In order to raise additional working capital and to restructure the PFG loan, on March 26, 2018, 43,800 6.0% 15 $25.00. $1.095 $1.0 $0.25 100 13, To assist with the upfront purchases of inventory required for future product deliveries, the Company entered into advance payment arrangements with certain customers, whereby the customers reimburse the Company for raw material purchases prior to the shipment of the finished products. The Company will continue to seek similar terms in future agreements with these customers and other customers. Management will continue to review all aspects of its business including, but not Management will also continue to seek additional working capital and liquidity through debt (including debt refinancing), equity financing or possible product line sales or cessation of unprofitable business product lines, however there are no Our historical operating results and forecasting uncertainties indicate that substantial doubt exists related to our ability to continue as a going concern. Management believes that through the actions to date and possible future actions described above, we should have the necessary liquidity to continue operations at least twelve The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern and do not	2 Going Concern and Management’s Plan The Company incurred net losses of $3.1 $1.5 March 31, 2018 March 25, 2017, $28.7 March 31, 2018. $620,000 March 25, 2017, $386,000 March 31, 2018. The new EW test system products have now shipped to several customers, but potential delays in the refinement of features, longer than anticipated sales cycles, or the ability to efficiently manufacture our EW test system products, could significantly contribute to additional future losses and decreases in working capital. To help fund operations, the Company relies on advances under the line of credit with Bridge Bank. The line of credit which expired on May 7, 2017, May 6, 2019. March 31, 2018, $552,000, $77,000, During April 2017, $1.5 2018, June 2017 March 2018. March 26, 2018, $1.0 8, In order to raise additional working capital and to restructure the PFG loan, on March 26, 2018, 43,800 6.0% 15 $25.00. $1.095 $1.0 $0.25 100 19, To assist with the upfront purchases of inventory required for future product deliveries, the Company entered into advance payment arrangements with certain customers, whereby the customers reimburse the Company for raw material purchases prior to the shipment of the finished products. The Company will continue to seek similar terms in future agreements with these customers and other customers. Management will continue to review all aspects of its business including, but not Management will also continue to seek additional working capital and liquidity through debt (including debt refinancing), equity financing or possible product line sales or cessation of unprofitable business product lines, however there are no Our historical operating results and forecasting uncertainties indicate that substantial doubt exists related to our ability to continue as a going concern. Management believes that through the actions to date and possible future actions described above, we should have the necessary liquidity to continue operations at least twelve The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern and do not

Note 3 - Cash and Cash-equivale

Note 3 - Cash and Cash-equivalents	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Cash and Cash Equivalents Disclosure [Text Block]	3 Cash and Cash-Equivalents Cash and cash-equivalents of $1.5 $1.4 March 31, 2018 March 25, 2017, March 31, 2018, $1.2

Note 4 - Inventories 2

Note 4 - Inventories 2	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Inventory Disclosure [Text Block]	( 4 ) Inventories Inventories consisted of the following: (In thousands) June 30 , 201 8 March 31 , 201 8 Raw materials $ 1,147 $ 2,290 Work-in-progress 1,749 2,100 Finished goods 81 561 Demonstration inventory 461 536 Total $ 3,438 $ 5,487	4 Inventories Inventories consisted of the following: (Dollars in thousands) March 31 , 201 8 March 25 , 201 7 Raw materials $ 2,290 $ 1,775 Work-in-progress 2,100 2,155 Finished goods 561 473 Demonstration inventory 536 408 Total $ 5,487 $ 4,811

Note 5 - Property, Plant and Eq

Note 5 - Property, Plant and Equipment, Net	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	5 Property, Plant and Equipment, net Property, plant and equipment, net is comprised of the following: (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Leasehold improvements $ 633 327 Machinery and equipment 4,333 4,330 Computer and software 681 678 Furniture and office equipment 227 231 Subtotal 5,874 5,566 Less: accumulated depreciation and amortization (5,041 ) (5,038 ) Total $ 833 $ 528

Note 6 - Software Development C

Note 6 - Software Development Costs	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Research, Development, and Computer Software Disclosure [Text Block]	6 Software Development Costs On September 3, 2015, The Company paid the aerospace company software development costs and fees for OLS of $1.2 third 2017. may seven As of March 31, 2018, March 25, 2017, zero $733,000, 2017 fourth 2017, three $733,000 2018.

Note 7 - Accounts Receivable Li

Note 7 - Accounts Receivable Line of Credit	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Debt Disclosure [Text Block]	( 5 ) Accounts Receivable Line of Credit On June 1, 2015 $2.5 $2.5 $2.0 $500,000 May 23, 2017, May 7, 2017) May 6, 2019. The loan agreement is secured by all assets of the Company including intellectual property and general intangibles and provides for a borrowing capacity equal to 80% May 6, 2019 1.5% $12,500 May 2017. 150% 90 As of June 30, 2018, June 30, 2018, $552,000	7 Accounts Receivable Line of Credit On June 1, 2015, $2.5 $2.5 $2.0 $500,000 May 23, 2017, May 7, 2017) May 6, 2019. The loan agreement is secured by all assets of the Company including intellectual property and general intangibles and provides for a borrowing capacity equal to 80% May 6, 2019 1.5% 4.50% March 31, 2018 6.0% $12,500 May 2017. 150% 90 8 The line of credit requires a lockbox arrangement, which provides for receipts to be swept daily to reduce borrowings outstanding at the discretion of Bridge Bank. This arrangement, combined with the existence of the subjective acceleration clause in the line of credit agreement, necessitates the line of credit be classified as a current liability on the balance sheet. The acceleration clause allows for amounts due under the facility to become immediately due in the event of a material adverse change in the Company’s business condition (financial or otherwise), operations, properties or prospects, or ability to repay the credit based on the lender's judgment. As of March 31, 2018, $552,000, $77,000,

Note 8 - Term Loans, Revolving

Note 8 - Term Loans, Revolving Line of Credit and Warrants	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Long-term Debt [Text Block]	( 6 ) Term Loan s , Revolving Line of Credit and Warrants On April 27, 2017, $1,500,000 April 28, 2017 ( “2017 2017 April 27, 2019, 2017 16% 9.5% 6.5% $100,000 $76,000 April 27, 2017, $24,000 $1,000 first Additionally, the 2017 250,000 190,000 April 27, 2017) 60,000 2,500 first 2017 2017 2017 5, The requirement to issue 60,000 815 15 25. not The proceeds received upon issuing the loan were allocated to: i) common stock, for the fair value of the 190,000 $1,576,000 $1,500,000 $76,000. $326,000, Fees paid to the lender and third parties $ 44,000 Back-end fee 76,000 Estimated fair value of embedded equity forward 49,000 Fair value of 190,000 shares of common stock issued to lender 157,000 Aggregate discount amount $ 326,000 The bifurcated embedded derivative and the debt discount are presented net with the related loan balance in the consolidated balance sheets. The debt discount is being amortized to interest expense over the loan’s term using the effective interest method. During the fiscal year ended March 31, 2018, $127,000 June 30, 2018, 375,000 PFG’s ability to call the debt on default (contingent put) and its ability to assess interest rate at a default rate (contingent interest) are embedded derivatives, which the Company evaluated. The fair value of these embedded features was determined to be immaterial and was not Between June 24, 2017 March 25, 2018, not 22% On March 26, 2018, 13 $1.7 2017 $1.0 16%, 2014 260,000 $1.42 $0.25 one March 13, 2020. The amendments to the 2017 $43,700, 2017 2017 The Company anticipates it will need to seek additional funds through the issuance of new debt, equity securities or product line sales in order to repay the 2017 no	8 Term Loans, Revolving Line of Credit and Warrants 2017 On April 27, 2017, $1,500,000 April 28, 2017 ( “2017 2017 April 27, 2019, 2017 16% 9.5% 6.5% $100,000 $76,000 April 27, 2017, $24,000 $1,000 first 2018, 25 Additionally, the 2017 250,000 190,000 April 27, 2017) 60,000 2,500 first 2017 2017 2017 7, The requirement to issue 60,000 815 15 25. not The proceeds received upon issuing the loan was allocated to: i) common stock, for the fair value of the 190,000 $1,576,000 $1,500,000 $76,000. $326,000, Fees paid to the lender and third parties $ 44,000 Back-end fee 76,000 Estimated fair value of embedded equity forward 49,000 Fair value of 190,000 shares of common stock issued to lender 157,000 Aggregate discount amount $ 326,000 The bifurcated embedded derivative and the debt discount are presented net with the related loan balance in the consolidated balance sheets. The debt discount is amortized to interest expense over the loan’s term using the effective interest method. During the fiscal year ended March 31, 2018, $127,000 March 31, 2018, 367,500 PFG’s ability to call the debt on default (contingent put) and its ability to assess interest rate at a default rate (contingent interest) are embedded derivatives, which the Company evaluated. The fair value of these embedded features was determined to be immaterial and was not Between June 24, 2017 March 25, 2018, not 22% On March 26, 2018, 19 $1.7 2017 $1.0 16%, 2014 260,000 2014 $1.42 $0.25 one March 13, 2020. The amendments to the 2017 $43,700, 2017 2017 The Company anticipates it will need to seek additional funds through the issuance of new debt, equity securities or product line sales in order to repay the 2017 no 2014 On March 13, 2014, three $2.0 $1.0 March 14, 2014. On June 16, 2014, $500,000, June 17, 2014. thirty-three $1.0 $500,000. $1.0 9.75% first six thirty 12.50% March 13, 2017 On June 3, 2015, $500,000 June 2014 $150,000 $500,000 July 2015. $10,000 March 26, 2016, $500,000 June 2014 $500,000 $1.0 March 25, 2017. The Company paid a loan fee of $30,000 $15,000 June 2014 300,000 180,000 $1.0 80,000 40,000 five $1.42 If the warrants are not March 13, 2019, $150,000 $67,000 As of March 25, 2017, $133,000 $89,000, $222,000. March 26, 2018, 150,000 $50,000 The initial $1.0 $822,000 $178,000, $178,000 March 25, 2017 $1.0 The proceeds from the $500,000 $365,000 $135,000, $135,000 March 26, 2016 $500,000 For the fiscal year ended March 25, 2017, $22,000.

Note 9 - Fair Value

Note 9 - Fair Value	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Fair Value Disclosures [Text Block]	( 7 ) Fair Value Pursuant to the accounting guidance for fair value measurement and its subsequent updates, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a hierarchy for inputs used in measuring fair value that minimizes the use of unobservable inputs by requiring the use of observable market data when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on active market data. Unobservable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances. The fair value hierarchy is broken down into the three • Level 1 1 • Level 2 2 • Level 3 no The carrying amounts of the Company’s cash and cash-equivalents and line of credit approximate their fair values at each balance sheet date due to the short-term maturity of these financial instruments, and generally result in inputs categorized as Level 1 2 On March 26, 2018, 150,000 0.96 85%, 2.12%, no There were no no June 30, 2018 March 31, 2018.	9 Fair Value Pursuant to the accounting guidance for fair value measurement and its subsequent updates, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a hierarchy for inputs used in measuring fair value that minimizes the use of unobservable inputs by requiring the use of observable market data when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on active market data. Unobservable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances. The fair value hierarchy is broken down into the three • Level 1 1 • Level 2 2 • Level 3 no The carrying amounts of the Company’s cash and cash-equivalents and line of credit approximate their fair values at each balance sheet date due to the short-term maturity of these financial instruments, and generally result in inputs categorized as Level 1 2 The Company’s derivative warrant liability is measured at fair value on a recurring basis and is categorized as Level 3 March 25, 2017, March 25, 2017: ( 2.0 101.1%, 1.26%, 24%. March 31, 2019. 1 2 3 On March 26, 2018, 150,000 0.96 85%, 2.12%, no The aforementioned warrant liability and equity forward are the Company’s only asset and liability recognized and measured at fair value on a recurring or non-recurring basis and are as follows: Fair Value Measurements as of March 31, 2018 (In Thousands): Level 1 Level Level 3 Warrant Liability $ — — $ — Total $ — — $ — Fair Value Measurements as of March 25, 2017 (In Thousands): Level 1 Level Level 3 Warrant Liability $ — — $ 222 Total $ — $ — $ 222 There were no 1, 2 3 March 31, 2018 March 25, 2017. The following table provides a reconciliation of the warrant liability measured at fair value using significant unobservable inputs (Level 3 March 25, 2017 March 31, 2018: Years Ended (In thousands) Mar. 31 , 201 8 Mar. 2 5 , 201 7 Warrant liability at beginning of year $ 222 $ 353 Change in fair value of warrant liability (222 ) (131 ) Warrant liability at end of period $ — $ 222

Note 10 - Sale of Product Lines

Note 10 - Sale of Product Lines	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Mergers, Acquisitions and Dispositions Disclosures [Text Block]	10 Sale of Product Lines On June 20, 2016, $850,000 $802,000 first June 25, 2016 (In thousands) Cash received from Astronics $ 850 Cash paid to buy out future commission obligation (170 ) Employee severance (97 ) Legal fees (13 ) Commissions (46 ) Warranty liability released 278 Net gain recognized $ 802 In calculating the gain included in the accompanying consolidated financial statements, the Company released $278,000 three 4 January 2020. June 2016 June $170,000. $500,000 July August 2016. The Company had no 2018. 2017, $2.1 $437,000 On December 15, 2015, $1.5 $1.5 six one 6 second September 24, 2016, one five $375,000 first 2017 The complaint sought specific performance of the agreement and damages. Spanawave’s affiliate Liberty Test also filed an arbitration claim for $440,000 not October 16, 2017, one five 6 6 During the fourth 2016, $375,000 first 2017, $375,000 $750,000. $375,000 July 28, 2016 one $375,000 third 2018, $324,000, $51,000 March 31, 2018 March 25, 2017, zero $437,000 June 2016, $275,000 no

Note 11 - Selling and Advertisi

Note 11 - Selling and Advertising Expenses	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Other Operating Income and Expense [Text Block]	11 Selling and Advertising Expenses Selling expenses consist primarily of salaries to employees and commissions paid to various sales representatives and marketing agencies. Commission expense totaled $43,000 $121,000 2018 2017, $23,000 $58,000 2018 2017,

Note 12 - Significant Customers

Note 12 - Significant Customers and Industry Segment Information	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	( 1 0 ) Significant Customer and Industry Segment Information The Company has two ● The Giga-tronics Division historically produced a broad line of test and measurement equipment used primarily for the design, production, repair and maintenance of products in aerospace, telecommunications, RADAR, and electronic warfare. The Company completed the divestiture of its switch and legacy product lines, and is now solely focused on producing the ASG and the ASA. ● Microsource primarily develops and manufactures YIG RADAR filters used in fighter jet aircraft for two The tables below present information for the two Three Month Periods Ended Three Month Periods Ended (In thousands) At June 30 , 201 8 June 30 , 201 8 At June 2 4 , 201 7 June 2 4 , 201 7 Assets Net Sales Net Income (Loss) Assets Net Sales Net Income (Loss) Giga-tronics Division $ 4,418 $ 38 $ (1559 ) $ 6,153 $ 297 $ (1,849 ) Microsource 1,953 1,061 1,272 2,907 1,694 591 Total $ 6,371 $ 1,099 $ (287 ) $ 9,060 $ 1,991 $ (1,258 ) During the first 2019, one 64% second 31% first 2018, one 43% second 37%	12 Significant Customers and Industry Segment Information The Company has two two The Giga-tronics Division designs, manufactures and markets a family of modular test products for use primarily in the electronic warfare (EW) segment of the defense electronics market. These modular test products are used for the construction of test and emulation systems used to validate the performance of EW equipment. Giga-tronics Division customers include major prime defense contractors, the armed services (primarily in the U.S) and research institutes. This product platform for EW test & simulation applications (formerly referred to as “Hydra”) has been the Company’s principal new product development initiative since 2011 35 2013 2016 The accounting policies for the segments are the same as those described in the "Summary of Significant Accounting Policies". The Company evaluates the performance of its segments and allocates resources to them based on earnings before income taxes. Segment net sales include sales to external customers. Inter-segment activities are eliminated in consolidation. Assets include accounts receivable, inventories, equipment, cash, deferred income taxes, prepaid expenses and other long- term assets. The Company accounts for inter-segment sales and transfers at terms that allow a reasonable profit to the seller. During the periods reported there were no The Company's reportable operating segments are strategic business units that offer different products and services. They are managed separately because each business utilizes different technology and requires different accounting systems. The Company’s chief operating decision maker is considered to be the Company’s Chief Executive Officer (“CEO”). The CEO reviews financial information presented on a consolidated basis accompanied by disaggregated information about revenues and pre-tax income or loss by operating segment. The tables below present information for the fiscal years ended in 2018 2017. March 31 , 201 8 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 2,737 $ 7,063 $ 9,800 Interest expense, net (461 ) — (461 ) Depreciation and amortization 1,116 1 1,117 Capital expenditures (688 ) — (688 ) Income/(Loss) before income taxes (5,847 ) 2,748 (3,099 ) Assets 5,253 3,178 8,431 March 2 5 , 201 7 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 8,021 $ 8,246 $ 16,267 Interest expense, net 133 — 133 Depreciation and amortization 820 7 827 Capital expenditures 41 — 41 Income/(Loss) before income taxes (2,702 ) 1,158 (1,544 ) Assets 6,433 2,641 9,074 The Company’s Giga-tronics Division and Microsource segments sell to agencies of the U.S. government and U.S. defense- related customers. In fiscal 2018 2017, 88% 78% 2018, 29% second 20% 2018 third 41% During fiscal 2017, 33% second 20% 2017 third 14% Export sales accounted for 8% 2% 2018 2017, (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Americas $ — $ — Europe 40 249 Asia — 15 Rest of world 702 64 Total $ 742 $ 328

Note 13 - Loss Per Common Share

Note 13 - Loss Per Common Share	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	( 8 ) Loss Per Share Basic loss per share (EPS) is calculated by dividing net income or loss by the weighted average common shares outstanding during the period. Diluted EPS reflects the net incremental shares that would be issued if unvested restricted shares became vested and dilutive outstanding stock options were exercised, using the treasury stock method. In the case of a net loss, it is assumed that no Three Months Ended (In thousands ) June 30, 2018 June 24, 2017 (in thousands): Common shares issuable upon exercise of stock options 1,498 1,104 Restricted stock awards 262 350 Issuable shares for interest on loan 25 60 Common shares issuable upon conversion of convertible preferred stock 7,113 1,853 Common shares issuable upon exercise of warrants 3,960 3,737 The stock options, restricted stock, convertible preferred stocks and warrants not three June 30, 2018 June 24, 2017	13 Loss per Common Share The stock options, restricted stock, convertible preferred stocks and warrants not March 31, 2018 March 25, 2017 Stock options not included in computation that could potentially dilute EPS in the future 1,479 1,105 Restricted stock awards not included in computation that could potentially dilute EPS in the future 300 — Convertible preferred stock not included in computation that could potentially dilute EPS in the future 1,858 1,853 Warrants not included in computation that could potentially dilute EPS in the future 3,960 3,737 7,597 6,695 The stock options, restricted stock, convertible preferred stocks and warrants not March 31, 2018 March 25, 2017

Note 14 - Income Taxes

Note 14 - Income Taxes	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	( 1 1 ) Income Taxes The Company accounts for income taxes using the asset and liability method as codified in Topic 740. The Company recorded $62,000 three June 30, 2018 no three June 24, 2017. April 2018, $62,000, $45,000 $107,000. three June 30, 2018 June 24, 2017 0% As of June 30, 2018, $122,000 not 12 On December 22, 2017, 35% 21% January 1, 2018, December 31, 2017. not 0%,	14 Income Taxes Following are the components of the provision for income taxes for fiscal years ended: March 31, March 25, (in thousands) 2018 2017 Current Federal $ — $ — State 2 2 2 2 Deferred Federal 5,547 (496 ) State (393 ) (6 ) 5,154 (502 ) Change in liability for uncertain tax positions 2 14 Change in valuation allowance (5,156 ) 488 Provision for income taxes $ 2 $ 2 The tax effects of temporary differences that give rise to significant portions of the deferred tax assets are as follows: Fiscal years ended (In thousands) March 31 , 201 8 March 2 5 , 201 7 Net operating loss carryforwards $ 11,472 $ 15,984 Income tax credits 347 323 Inventory reserves and additional costs capitalized 787 1,450 Accrued vacation 40 109 Deferred rent 136 — Non-qualified stock options and restricted stock 2 5 Other 77 146 Total deferred tax assets 12,861 18,017 Valuation allowance (12,861 ) (18,017 ) Net deferred tax assets $ — $ — On December 22, 2017, 1986, 35% 21% December 31, 2017. March 26, 2017 March 31, 2018, 31.55% 2017 As a result of the enactment of the TCJ Act, the Company’s deferred tax assets and liabilities were remeasured using the new corporate tax rate, resulting in a $5.2 The following summarizes the difference between the income tax expense and the amount computed by applying the statutory federal income tax rates of 31.55% 34%, March 31, 2018 March 25, 2017, March 31, 2018 March 25, 2017: Fiscal years ended (In thousands except percentages) March 31 , 20 1 8 March 2 5 , 201 7 Statutory federal income tax (benefit) $ (955 ) 31.6 % $ (525 ) 34.0 % Valuation allowance (5,156 ) 170.1 488 (31.6 ) Effect of reduced corporate tax rates 6,207 (205.3 ) — — State income tax, net of federal benefit (177 ) 5.9 (90 ) 5.8 Net operating loss expiration — — 86 (5.6 ) Non-tax deductible expenses 46 (1.5 ) 77 (5.0 ) Tax credits (4 ) 0.1 (40 ) 2.6 Liability for uncertain tax positions — — 14 (0.9 ) Other 41 (0.9 ) (8 ) 0.5 Effective income tax $ 2 — $ 2 (0.2 )% The decrease in valuation allowance from March 25, 2017 March 31, 2018 $5,156,000. As of March 31, 2018, $46,539,000 $24,322,000 2023 2038 2028 2038, may 382. December 31, 2017. 2032 2038 The Company has recorded a valuation allowance to reflect the estimated amount of deferred tax assets, which may not As of March 31, 2018, $122,000 not The Company files U.S federal and California state tax returns. The Company is generally no 2013 2012 not no A reconciliation of the beginning and ending amount of the liability for uncertain tax positions, excluding potential interest and penalties, is as follows: Fiscal Year s (In thousands) 2018 2017 Balance as of beginning of year $ 120 $ 106 Additions based on current year tax positions 2 14 (Reductions) additions for prior year tax positions — — Balance as of end of year $ 122 $ 120 The total amount of interest and penalties related to unrecognized tax benefits at March 31, 2018 not not not twelve 12

Note 15 - Share-based Compensat

Note 15 - Share-based Compensation and Employee Benefit Plans	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	( 9 ) S tock Based Compensation The Company has established the 2005 2,850,000 100% 2005 2025. 2000 no one four five not 10 may June 30, 2018, no June 30, 2018, 437,677. ten Stock Options In calculating compensation related to stock option grants, the fair value of each stock option was estimated on the date of grant using the Black-Scholes-Merton option-pricing model and the following weighted average assumptions: Three Months Ended June 30, 2018 June 2 4 , 2017 Dividend yield — — Expected volatility 92.55 % — Risk-free interest rate 2.82 % — Expected term (years) 8.36 — The computation of expected volatility used in the Black-Scholes-Merton option-pricing model is based on the historical volatility of the Company’s share price. The expected term is estimated based on a review of historical employee exercise behavior with respect to option grants. The risk-free interest rate is based on the U.S. Treasury rates with maturity similar to the expected term of the option on the date of grant. A summary of the changes in stock options outstanding for the three June 30, 2018 March 31, 2018 Weighted Average Weighted Average Remaining Aggregate Shares Exercise Price per share Contractual Terms (Years) Intrinsic Value Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Granted 50,000 0.27 10.0 Forfeited / Expired (31,000 ) 1.41 Outstanding at June 30, 2018 1,497,700 $ 0.53 7.8 $ — Exercisable at June 30, 2018 500,650 $ 0.79 4.4 $ — At June 30, 2018 expected to vest in the future 702,491 $ 0.40 9.6 $ — As of June 30, 2018, $205,000 3.71 7,200 June 30, 2018, 26,500 June 24, 2017. June 30, 2018 June 24, 2017 $9,052 $33,000 no three June 30, 2018 June 24, 2017. three June 30, 2018 June 24, 2017 $20,000 $37,000, Restricted Stock The Company granted no first 2019. No first 2018. June 30, 2018, $61,000 0.87 three June 30, 2018 June 24, 2017 $37,000 $9,000, A summary of the changes in non-vested RSAs outstanding for the three June 30, 2018 March 31, 2018 Shares Weighted Average Fair Value Non-Vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-Vested at March 31, 2018 299,950 $ 0.65 Vested (37,500 ) (0.39 ) Non-Vested at June 30, 2018 262,450 $ 0.68	15 Share-based Compensation and Employee Benefit Plans Share-based Compensation 2005 2,850,000 100% 2014, 2005 2025. one four five not 10 may March 31, 2018, no March 31, 2018, 456,677. ten Stock Options The weighted average grant date fair value of stock options granted during the fiscal years ended March 31, 2018 March 25, 2017 $0.93 $0.83, Fiscal years ended March 31, 2018 March 25, 2017 Dividend yield — — Expected volatility 91 % 99 % Risk-free interest rate 2.40 % 1.45 % Expected term (years) 8.35 8.36 A summary of the changes in stock options outstanding for the fiscal years ended March 31, 2018 March 25, 2017 Weighted Weighted Average Remaining (Dollars in thousands except share prices) Shares Average Exercise Price per share Contractual Term (Years) Aggregate Intrinsic Value Outstanding at March 26, 2016 1,592,200 $ 1.52 6.8 $ 69 Granted 148,000 0.97 Exercised — — Forfeited / Expired (635,700 ) 1.57 Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Exercised — — Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Exercisable at March 31, 2018 524,450 $ 0.81 4.8 $ — At March 31, 2018, expected to vest in the future 671,805 $ 0.42 9.8 $ — As of March 31, 2018, $215,000 2005 2005 3.9 143,900 272,500 March 31, 2018 March 25, 2017, March 31, 2018 March 25, 2017 $163,000 $315,000, no 2018 2017. March 31, 2018 March 25, 2017 $251,000 $257,000, Restricted Stock The Company granted 586,950 March 31, 2018. 44,500 2017. March 31, 2018, $97,000 0.89 2018 2017 $107,000 $29,000, A summary of the changes in non-vested restricted stock awards outstanding for the fiscal years ended March 31, 2018 March 25, 2017 Shares Weighted Average Grant Date Fair Value Non-vested at March 26, 2016 — $ — Granted 44,500 0.66 Vested (44,500 ) 0.66 Forfeited or cancelled — — Non-vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-vested at March 31, 2018 299,950 $ 0.65 401 401 may 100% four 2018 2017 $27,000 $33,000,

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	16 Commitments and Contingencies The Company leased a 47,300 April 2017. January 5, 2017, seventy-seven 23,873 April 1, 2017. March 31, 2018. The Company also leases certain other equipment under operating leases. Total future minimum lease payments under the new building lease and certain equipment are as follows. Fiscal year (Dollars in thousands) 2019 $ 436 2020 450 2021 464 2022 472 Thereafter 696 Total $ 2,518 The aggregate rental expense was $460,000 $523,000 2018 2017, The Company leases certain equipment under capital leases that expire through May 2021. $249,000 $249,000 $174,000 $113,000 March 31, 2018 March 25, 2017, Total future minimum lease payments under these capital leases are as follows. Fiscal year (Dollars in thousands) Principal Interest Total 2019 $ 52 $ 12 $ 64 2020 40 5 45 2021 22 1 23 Total $ 114 $ 18 $ 132 The Company is committed to purchase certain inventory under non-cancelable purchase orders. As of March 31, 2018, $1,260,000 March 2019.

Note 17 - Warranty Obligations

Note 17 - Warranty Obligations	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Product Warranty Disclosure [Text Block]	( 1 2 ) Warranty Obligations The Company records a liability in cost of sales for estimated warranty obligations at the date products are sold. Adjustments are made as new information becomes available. The following provides a reconciliation of changes in the Company’s warranty reserve. The Company provides no (In thousands) Three Months Ended June 30 , 201 8 Three Months Ended June 2 4 , 201 7 Balance at beginning of period $ 164 $ 123 Provision, net 6 1 Warranty costs incurred (29 ) (33 ) Balance at end of period $ 141 $ 91	17 Warranty Obligations The Company records a liability in cost of sales for estimated warranty obligations at the date products are sold. Adjustments are made as new information becomes available. The following provides a reconciliation of changes in the Company’s warranty reserve. The Company provides no (In thousands) March 31 , 201 8 March 2 5 , 201 7 Balance as of beginning of year $ 123 $ 60 Provision, net 291 234 Warranty costs incurred (250 ) (171 ) Balance as of end of year $ 164 $ 123

Note 18 - Private Placement Off

Note 18 - Private Placement Offering	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Private Placement Offering [Text Block]	18 Private Placement Offering On January 19, 2016, 2,787,872 one 0.75 20 $1.24375. $3.5 $3.1 $1.15, January 15, 2016. $.09375 $0.125 $1.15 five 292,727 $1.15

Note 19 - Preferred Stock and W

Note 19 - Preferred Stock and Warrants	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Preferred Stock [Text Block]	( 1 3 ) Preferred Stock and Warrants Series E Senior Convertible Voting Perpetual Preferred Stock On March 26, 2018, 43,800 6.0% 15 March 28, 2018. The purchase price for each Series E Share was $25.00. $1.095 $1.0 5% $57,000 5% 223,000 $0.25 Each Series E Share is initially convertible (at the option of the holder) at a conversion price of $0.25 100 March 31, 2018, 43,800 4,380,000 31% 27% 22% 300% $75.00 Each Series E Share has a liquidation preference of 150% $37.50, Holders of Series E Shares are entitled to receive, when, as and if declared by the Company’s Board of Directors, cumulative preferential dividends, payable semiannual in cash at a rate per annum equal to 6.0% $25.00 10 Holders of Series E Shares generally vote together with the common stock on an as-converted basis on each matter submitted to the vote or approval of the holders of common stock, and vote as a separate class with respect to certain actions that adversely affect the rights of the holders of Series E Shares and on other matters as required by law. In addition, the approval of the Holders of the Series E shares is generally required prior to the Company’s issuance of any securities having rights senior to or in parity with the Series E Shares with respect to dividends or liquidation preferences. The Series E Shares’ right to approve parity securities will terminate at such time that ( 1 22,300 50% first 2 20 30 $0.75 30 100,000 144 1933, The Company and each Series E investor entered into an Investor Rights Agreement. Under this agreement, the Company agreed to, among other things, use best efforts to file certain registration statements for the resale of common stock of the Company that the investor may may two not 66.6% $1.7 8 In connection with the sale of Series E Shares, the Company agreed to reduce the exercise price of certain warrants issued in connection with the Company’s private placement in January 2016 ( 18 2,787,872 “2016 2016 0.75 $1.15 2016 2016 $1.15 $0.25 2016 $200,000 50% 2016 2016 $0.25, 2016 $200,000 50% January 2016 2016 $0.25. 1,759,268 2016 $0.25. The fair value attributable to re-pricing the 2016 2016 $203,000, $557,000, In addition, warrants to purchase 292,727 $1.15 $0.25 $53,000 For the three June 30, 2018, 8,800 $25.00 $220,000. The table below presents information as of June 30, 2018 March 31, 2018: Preferred Stock Shares Shares Shares Liquidation Preference Designated Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183 Series E 9,600.00 9,600.00 360 Total at June 30, 2018 79,500.00 71,933.51 71,933.51 $ 5,413	19 Preferred Stock and Warrants Series E Senior Convertible Voting Perpetual Preferred Stock On March 26, 2018, 43,800 6.0% 15 March 28, 2018. The purchase price for each Series E Share was $25.00. $1.095 $1.0 5% $57,000 5% 223,000 $0.25 Each Series E Share is initially convertible (at the option of the holder) at a conversion price of $0.25 100 March 31, 2018, 43,800 4,380,000 31% 27% 22% 300% $75.00 Each Series E Share has a liquidation preference of 150% $37.50, Holders of Series E Shares are entitled to receive, when, as and if declared by the Company’s Board of Directors, cumulative preferential dividends, payable semiannual in cash at a rate per annum equal to 6.0% $25.00 10 Holders of Series E Shares generally vote together with the common stock on an as-converted basis on each matter submitted to the vote or approval of the holders of common stock, and vote as a separate class with respect to certain actions that adversely affect the rights of the holders of Series E Shares and on other matters as required by law. In addition, the approval of the Holders of the Series E shares is generally required prior to the Company’s issuance of any securities having rights senior to or in parity with the Series E Shares with respect to dividends or liquidation preferences. The Series E Shares’ right to approve parity securities will terminate at such time that ( 1 22,300 50% first 2 20 30 $0.75 30 100,000 144 1933, The Company and each Series E investor entered into an Investor Rights Agreement. Under this agreement, the Company agreed to, among other things, use best efforts to file certain registration statements for the resale of common stock of the Company that the investor may may two not 66.6% $1.7 8 In connection with the sale of Series E Shares, the Company agreed to reduce the exercise price of certain warrants issued in connection with the Company’s private placement in January 2016 ( 18 2,787,872 “2016 2016 0.75 $1.15 2016 2016 $1.15 $0.25 2016 $200,000 50% 2016 2016 $0.25, 2016 $200,000 50% January 2016 2016 $0.25. 1,759,268 2016 $0.25. The fair value attributable to re-pricing the 2016 2016 $203,000, $557,000, In addition, warrants to purchase 292,727 $1.15 $0.25 $53,000 Series B, C, D Convertible Voting Perpetual Preferred Stock and Warrants On November 10, 2011, $2,199,000 October 31, 2011. 9,997 $220 $2.0 $202,000 no On February 19, 2013, 3,424.65 $500,000, $146.00 $457,000 $43,000. no On July 8, 2013 $817,000 5,111.86 511,186 $1.43 $858,000 $498,000 $41,000 $360,000 $498,000 $0.97 $238,000 Each share of Series B, Series C and Series D Preferred Stock is convertible into one hundred 1,017,405 $1.43 February 2015, May 2015. February 16, 2015 February 23, 2015. 1,002,818 $1.43 $1,434,000, $42,000 two 898,634 194,437 $1.78 $1.76 $137,000 $0.125 five may 14,587 February May 14, 2015, 14,587 7,216 The table below presents information for the fiscal years ended March 31, 2018 March 25, 2017: Preferred Stock As of March 31 , 201 8 and March 2 5 , 201 7 Designated Shares Shares Liquidation Preference Shares Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Total at March 25, 2017 19,500.00 18,533.51 18,533.51 3,540 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183

Note 20 - Subsequent Events

Note 20 - Subsequent Events	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	( 1 4 ) Subsequent Events During August 2018, 1,400 $25.00 $35,000.	20 Subsequent Events During April 2018, 6,000 $25.00 $150,000. During May 2018, 2,400 $25.00 $60,000.

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of Consolidation	Principles of Consolidation
Derivatives, Policy [Policy Text Block]	Derivatives	Embedded Derivatives
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition and Deferred Revenue April 1, 2018, 2014 09 2015 2017 606, Revenue from Contracts with Customers (“ASC 606” not In determining the appropriate amount of revenue to be recognized as it fulfills its obligations under its agreements, the Company performs the following steps: (i) identifies the promised goods or services in the contract; (ii) determines whether the promised goods or services are performance obligations including whether they are distinct in the context of the contract; (iii) measures the transaction price, including the constraint on variable consideration; (iv) allocates the transaction price to the performance obligations based on estimated selling prices; and (v) recognizes revenue when (or as) the Company satisfies each performance obligation. The Company generates revenue through the design, manufacture, and sale of products used in defense industry to major prime defense contractors, the armed services (primarily in the U.S.) and research institutes. There is generally one not For the sale of standard or minimally customized products, the performance obligation is the series of finished products which are recognized at the points in time the units are transferred to the control of the customer, typically upon shipment. This type of revenue arrangement is typical for our commercial contracts within the Giga-tronics segment for its Advanced Signal Generation and Analysis system products used for testing RADAR and Electronic Warfare (“EW”) equipment. Performance Obligations A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in ASC Topic 606. ● Design and manufacturing services ● Product supply – Distinct goods or services that are substantially the same ● Engineering services The majority of the Company’s contracts have a single performance obligation as the promise to transfer the individual goods or services is not not 2019 606 no $56,000. Transaction Price The Company has both fixed and variable consideration. Under the Company’s highly engineered design and manufacturing arrangements, advance payments and unit prices are considered fixed, as product is not may not Allocation of Consideration As part of the accounting for arrangements that contain multiple performance obligations, the Company must develop assumptions that require judgment to determine the stand-alone selling price of each performance obligation identified in the contract. When a contract contains more than one Timing of Recognition Significant management judgment is required to determine the level of effort required under an arrangement and the period over which the Company expects to complete its performance obligations under the arrangement. The selection of the method to measure progress towards completion requires judgment and is based on the nature of the products or services to be provided. The Company generally uses the cost-to-cost measure of progress as this measure best depicts the transfer of control to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost method, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenue is recognized for design and manufacturing services and for engineering services over time proportionate to the costs that the Company has incurred to perform the services using the cost-to-cost input method and for products at a point in time. Approximately 99% 1% Changes in Estimates The effect of a contract modification on the transaction price and the measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue (either as an increase in or a reduction of revenue) on a cumulative catch-up basis. For contracts using the cost-to-cost method, management reviews the progress and execution of the performance obligations. This process requires management judgment relative to estimating contract revenue and cost, and making assumptions for delivery schedule. This process requires management’s judgment to make reasonably dependable cost estimates. Since certain contracts extend over a longer period of time, the impact of revisions in cost and revenue estimates during the progress of work may 99% first 2019. The aggregate effects of these changes on contracts in the first 2019 Balance Sheet Presentation The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and deferred revenue (contract liabilities) on the Condensed Consolidated Balance Sheet. Under the typical payment terms of over time contracts, the customer pays either performance-based payments or progress payments. Amounts billed and due from customers are classified as receivables on the Condensed Consolidated Balance Sheet. Interim payments may may not Remaining performance obligations represent the transaction price of firm orders for which work has not Recognition Prior to April 1, 2018 Prior to April 1, 2018 April 1, 2018 not 606	Revenue Recognition and Deferred Revenue a. It is commensurate with either of the following: 1. The Company’s performance to achieve the milestone. 2. The enhancement of the value of the delivered item or items as a result of a specific outcome resulting from the Company's performance to achieve the milestone. b. It relates solely to past performance. c. It is reasonable relative to all of the deliverables and payment terms (including other potential milestone consideration) within the arrangement. Milestones for revenue recognition are agreed upon with the customer prior to the start of the contract and some milestones are based on product shipping while others are based on design review. In fiscal 2015 $6.5 March 31, 2018 March 25, 2017, zero $478,000, On certain contracts with several of the Company’s significant customers the Company receives payments in advance of manufacturing. Advanced payments are recorded as deferred revenue until the revenue recognition criteria described above has been met. Accounts receivable are stated at their net realizable value. The Company has estimated an allowance for uncollectable accounts based on analysis of specifically identified accounts, outstanding receivables, consideration of the age of those receivables, the Company’s historical collection experience, and adjustments for other factors management believes are necessary based on perceived credit risk. The activity in the allowance account for doubtful accounts is as follows for the years ended: (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Beginning balance $ 45 $ 45 Provisions for doubtful accounts (37 ) — Write-off of doubtful accounts — — Ending balance $ 8 $ 45
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Standards In February 2016, 2016 02 2016 02” 2016 02 one December 15, 2018. 2016 02 In May 2014, 2014 09 606” August 2015 March, April, May December 2016, 606, 606 606 606 may 606 December 15, 2017, first 2017. The Company adopted ASC 606 April 1, 2018 ( no 2017 2018 April 1, 2018. The most significant change relates to the timing of revenue and cost recognition on the Company’s customer contracts. Under ASC 606, April 1, 2018. Adopting ASC 606, may The cumulative effect of the changes made to the Company’s consolidated April 1, 2018 606 Balance at March 31, 2018 Topic ASC 606 Adjustments Balance at April 1, 2018 Assets Prepaid and other current assets $ 87 $ 188 $ 275 Inventories, net 5,487 (1,581 ) 3,906 Liabilities Deferred revenue $ 3,374 $ (2,568 ) $ 806 Stockholders' Equity Accumulated deficit $ (28,682 ) $ 1,176 $ (27,506 ) In accordance with the requirements of Topic 606, first June 30, 2018 For the first quarter ended June 30, 2018 Without ASC 606 Adoption Topic ASC 606 Adjustments As Reported Assets Prepaid and other current assets $ 149 $ 643 $ 792 Inventories, net 5,406 (1,968 ) 3,438 Liabilities Deferred revenue $ 2,966 $ (2,709 ) 257 Stockholders' Equity Accumulated deficit $ (29,177 ) $ 1,384 (27,793 ) Revenue Revenue $ 2,247 $ 596 $ 2,843 Costs of services Costs of services $ 416 $ 358 774 Net loss $ (525 ) $ (238 ) (287 ) Net loss per share, basic and fully diluted $ (0.05 ) $ 0.02 $ (0.03 )	Recently Issued Accounting Standards In April 2015, 2015 03, 835 30 Simplifying the Presentation of Debt Issuance Costs 2015 03. 2015 03 not December 15, 2015, In November 2015, 2015 17 Income Taxes (Topic 740 740 December 15, 2016, December 15, 2017, December 15, 2018. may 2015 17 may In February 2016, 2016 02 2016 02” 2016 02 one December 15, 2018. 2016 02 In May 2014, 2014 09 2014 09” 2014 09 2014 09 2014 09 may 2014 09 December 15, 2017, first 2017. The Company adopted ASU 2014 09 April 1, 2018 ( no 2017 2018 April 1, 2018. While the Company is still in the process of finalizing the impact of adoption of the new standard on its financial statements, the Company has identified that the most significant change relates to the timing of its revenue recognition on its customer contracts. Under the legacy GAAP, the Company recorded revenue when there was persuasive evidence of an arrangement, delivery had occurred, the price was fixed and determinable, and collectability was reasonably assured. This occurred when products were shipped or the customer accepted title transfer. If the arrangement involved acceptance terms, the Company deferred revenue until product acceptance was received. On certain large development contracts, revenue was recognized upon achievement of substantive milestones. Advanced payments were recorded as deferred revenue until the revenue recognition criteria described above had been met. Under ASU 2014 09, April 1, 2018. Adopting ASU No. 2014 09, may
Use of Estimates, Policy [Policy Text Block]		Use of Estimates
Fiscal Period, Policy [Policy Text Block]		Fiscal Year 52 53 March. 2018 March 31, 2018 53 2017 March 25, 2017, 52
Standard Product Warranty, Policy [Policy Text Block]		Accrued Warranty one three
Inventory, Policy [Policy Text Block]		Inventories first first not
Research and Development Expense, Policy [Policy Text Block]		Research and Development $1.8 $2.3 March 25, 2018 March 26, 2017,
Property, Plant and Equipment, Policy [Policy Text Block]		Property and Equipment three ten The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not March 31, 2018, March 25, 2017, no
Warrants to Purchase Common Stock, Policy [Policy Text Block]		Warrants to Purchase Common Stock 815 Derivatives and Hedging On March 26, 2018, $217,000 150,000 $50,000
Lessee, Leases [Policy Text Block]		Deferred Rent
Income Tax, Policy [Policy Text Block]		Income Taxes not The Company considers all tax positions recognized in its financial statements for the likelihood of realization. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the positions taken or the amounts of the positions that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not not 50
Product Development Costs, Policy [Policy Text Block]		Product Development Costs March 31, 2018 March 25, 2017.
Software Development Costs, Policy [Policy Text Block]		Software Development Costs
Discontinued Operations, Policy [Policy Text Block]		Discontinued Operations 10, not 205 20.The 10, not
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]		Share-based Compensation 2018, 400,000 $0.33 4 2 fourth first 1/48 36 The cash flows resulting from the tax benefits resulting from tax deductions in excess of the compensation cost recognized for those options (excess tax benefits) are classified as cash flows from financing in the statements of cash flows. These excess tax benefits were not March 31, 2018 March 25, 2017. In calculating compensation related to stock option grants, the fair value of each stock option is estimated on the date of grant using the Black-Scholes-Merton option-pricing model. The computation of expected volatility used in the Black-Scholes- Merton option-pricing model is based on the historical volatility of Giga-tronics’ share price. The expected term is estimated based on a review of historical employee exercise behavior with respect to option grants. The risk free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected dividend yield was not not no The fair value of restricted stock awards is based on the fair value of the underlying shares at the date of the grant. Management makes estimates regarding pre-vesting forfeitures that will impact timing of compensation expense recognized for stock option and restricted stock awards.
Earnings Per Share, Policy [Policy Text Block]		Earnings or Loss Per Common Share not two
Comprehensive Income, Policy [Policy Text Block]		Comprehensive Income or Loss no
Concentration Risk, Credit Risk, Policy [Policy Text Block]		Financial Instruments and Concentration of Credit Risk not March 31, 2018, one 79% March 25, 2017, three 67%
Fair Value of Financial Instruments, Policy [Policy Text Block]		Fair Value of Financial Instruments and Fair Value Measurements 1 1 not 2 3

Note 1 - Organization and Sig_2

Note 1 - Organization and Significant Accounting Policies (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	Balance at March 31, 2018 Topic ASC 606 Adjustments Balance at April 1, 2018 Assets Prepaid and other current assets $ 87 $ 188 $ 275 Inventories, net 5,487 (1,581 ) 3,906 Liabilities Deferred revenue $ 3,374 $ (2,568 ) $ 806 Stockholders' Equity Accumulated deficit $ (28,682 ) $ 1,176 $ (27,506 ) For the first quarter ended June 30, 2018 Without ASC 606 Adoption Topic ASC 606 Adjustments As Reported Assets Prepaid and other current assets $ 149 $ 643 $ 792 Inventories, net 5,406 (1,968 ) 3,438 Liabilities Deferred revenue $ 2,966 $ (2,709 ) 257 Stockholders' Equity Accumulated deficit $ (29,177 ) $ 1,384 (27,793 ) Revenue Revenue $ 2,247 $ 596 $ 2,843 Costs of services Costs of services $ 416 $ 358 774 Net loss $ (525 ) $ (238 ) (287 ) Net loss per share, basic and fully diluted $ (0.05 ) $ 0.02 $ (0.03 )

Note 3 - Revenue Recognition (T

Note 3 - Revenue Recognition (Tables)	3 Months Ended
	Jun. 30, 2018
Notes Tables
Contract with Customer, Asset and Liability [Table Text Block]	Balance at Beginning of the Period Additions Deductions Balance at the end of the Period (in thousands) Contract Assets $ 189 $ 466 $ 12 $ 643 Contract Liabilities: Deferred Revenue $ (806 ) $ (248 ) $ 787 $ 257
Disaggregation of Revenue [Table Text Block]	Revenue recognized in the period from: Amounts included in contract liabilities at the beginning of the period: Performance obligations satisfied $ 559 New activities in the period: Changes in estimates (29 ) Performance obligations satisfied 2,313 Total services revenue $ 2,843

Note 4 - Inventories (Tables)

Note 4 - Inventories (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Inventory, Current [Table Text Block]	(In thousands) June 30 , 201 8 March 31 , 201 8 Raw materials $ 1,147 $ 2,290 Work-in-progress 1,749 2,100 Finished goods 81 561 Demonstration inventory 461 536 Total $ 3,438 $ 5,487	Inventories consisted of the following: (Dollars in thousands) March 31 , 201 8 March 25 , 201 7 Raw materials $ 2,290 $ 1,775 Work-in-progress 2,100 2,155 Finished goods 561 473 Demonstration inventory 536 408 Total $ 5,487 $ 4,811

Note 6 - Term Loans, Revolvin_2

Note 6 - Term Loans, Revolving Line of Credit and Warrants (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
PFG Loan [Member]
Notes Tables
Schedule of Debt Discount [Table Text Block]	<table style="margin-right: 20%; margin-left: 72pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 81%; padding-left: 0pt;">Fees paid to the lender and third parties</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Back-end fee</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td>Estimated fair value of embedded equity forward</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Fair value of 190,000 shares of common stock issued to lender</td> <td style="width: 1%;"> </td> <td style="width: 1%; border-bottom: thin solid rgb(0, 0, 0);"> </td> <td style="width: 16%; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000</div></td> <td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0); margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="padding-left: 9pt;">Aggregate discount amount</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>" id="sjs-B5">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table style="margin-right: 20%; margin-left: 72pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="width: 81%; padding-left: 0pt;">Fees paid to the lender and third parties&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Back-end fee&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td>Estimated fair value of embedded equity forward&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Fair value of 190,000 shares of common stock issued to lender&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%; border-bottom: thin solid rgb(0, 0, 0);">&nbsp;&lt;/td> &lt;td style="width: 16%; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000&lt;/div>&lt;/td> &lt;td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0); margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="padding-left: 9pt;">Aggregate discount amount&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>	<table style="margin-right: 10%; margin-left: 10%; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 81%;">Fees paid to the lender and third parties</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Back-end fee</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td>Estimated fair value of embedded equity forward</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Fair value of 190,000 shares of common stock issued to lender</td> <td style="width: 1%;"> </td> <td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 16%; text-align: right; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000</div></td> <td style="width: 1%; padding-bottom: 1px; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="padding-left: 9pt;">Aggregate discount amount</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>" id="sjs-C5">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table style="margin-right: 10%; margin-left: 10%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="width: 81%;">Fees paid to the lender and third parties&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Back-end fee&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td>Estimated fair value of embedded equity forward&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Fair value of 190,000 shares of common stock issued to lender&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0);">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right; border-bottom: 1px solid rgb(0, 0, 0);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000&lt;/div>&lt;/td> &lt;td style="width: 1%; padding-bottom: 1px; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="padding-left: 9pt;">Aggregate discount amount&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>

Note 8 - Loss Per Share (Tables

Note 8 - Loss Per Share (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended (In thousands ) June 30, 2018 June 24, 2017 (in thousands): Common shares issuable upon exercise of stock options 1,498 1,104 Restricted stock awards 262 350 Issuable shares for interest on loan 25 60 Common shares issuable upon conversion of convertible preferred stock 7,113 1,853 Common shares issuable upon exercise of warrants 3,960 3,737	Stock options not included in computation that could potentially dilute EPS in the future 1,479 1,105 Restricted stock awards not included in computation that could potentially dilute EPS in the future 300 — Convertible preferred stock not included in computation that could potentially dilute EPS in the future 1,858 1,853 Warrants not included in computation that could potentially dilute EPS in the future 3,960 3,737 7,597 6,695

Note 9 - Share Based Compensa_2

Note 9 - Share Based Compensation (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Three Months Ended June 30, 2018 June 2 4 , 2017 Dividend yield — — Expected volatility 92.55 % — Risk-free interest rate 2.82 % — Expected term (years) 8.36 —	Fiscal years ended March 31, 2018 March 25, 2017 Dividend yield — — Expected volatility 91 % 99 % Risk-free interest rate 2.40 % 1.45 % Expected term (years) 8.35 8.36
Share-based Compensation, Stock Options, Activity [Table Text Block]	Weighted Average Weighted Average Remaining Aggregate Shares Exercise Price per share Contractual Terms (Years) Intrinsic Value Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Granted 50,000 0.27 10.0 Forfeited / Expired (31,000 ) 1.41 Outstanding at June 30, 2018 1,497,700 $ 0.53 7.8 $ — Exercisable at June 30, 2018 500,650 $ 0.79 4.4 $ — At June 30, 2018 expected to vest in the future 702,491 $ 0.40 9.6 $ —	Weighted Weighted Average Remaining (Dollars in thousands except share prices) Shares Average Exercise Price per share Contractual Term (Years) Aggregate Intrinsic Value Outstanding at March 26, 2016 1,592,200 $ 1.52 6.8 $ 69 Granted 148,000 0.97 Exercised — — Forfeited / Expired (635,700 ) 1.57 Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Exercised — — Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Exercisable at March 31, 2018 524,450 $ 0.81 4.8 $ — At March 31, 2018, expected to vest in the future 671,805 $ 0.42 9.8 $ —
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	Shares Weighted Average Fair Value Non-Vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-Vested at March 31, 2018 299,950 $ 0.65 Vested (37,500 ) (0.39 ) Non-Vested at June 30, 2018 262,450 $ 0.68	Shares Weighted Average Grant Date Fair Value Non-vested at March 26, 2016 — $ — Granted 44,500 0.66 Vested (44,500 ) 0.66 Forfeited or cancelled — — Non-vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-vested at March 31, 2018 299,950 $ 0.65

Note 10 - Significant Custome_2

Note 10 - Significant Customer and Industry Segment Information (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Month Periods Ended Three Month Periods Ended (In thousands) At June 30 , 201 8 June 30 , 201 8 At June 2 4 , 201 7 June 2 4 , 201 7 Assets Net Sales Net Income (Loss) Assets Net Sales Net Income (Loss) Giga-tronics Division $ 4,418 $ 38 $ (1559 ) $ 6,153 $ 297 $ (1,849 ) Microsource 1,953 1,061 1,272 2,907 1,694 591 Total $ 6,371 $ 1,099 $ (287 ) $ 9,060 $ 1,991 $ (1,258 )	March 31 , 201 8 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 2,737 $ 7,063 $ 9,800 Interest expense, net (461 ) — (461 ) Depreciation and amortization 1,116 1 1,117 Capital expenditures (688 ) — (688 ) Income/(Loss) before income taxes (5,847 ) 2,748 (3,099 ) Assets 5,253 3,178 8,431 March 2 5 , 201 7 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 8,021 $ 8,246 $ 16,267 Interest expense, net 133 — 133 Depreciation and amortization 820 7 827 Capital expenditures 41 — 41 Income/(Loss) before income taxes (2,702 ) 1,158 (1,544 ) Assets 6,433 2,641 9,074

Note 12 - Warranty Obligations

Note 12 - Warranty Obligations (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	(In thousands) Three Months Ended June 30 , 201 8 Three Months Ended June 2 4 , 201 7 Balance at beginning of period $ 164 $ 123 Provision, net 6 1 Warranty costs incurred (29 ) (33 ) Balance at end of period $ 141 $ 91	(In thousands) March 31 , 201 8 March 2 5 , 201 7 Balance as of beginning of year $ 123 $ 60 Provision, net 291 234 Warranty costs incurred (250 ) (171 ) Balance as of end of year $ 164 $ 123

Note 13 - Preferred Stock and_2

Note 13 - Preferred Stock and Warrants (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Stock by Class [Table Text Block]	Preferred Stock Shares Shares Shares Liquidation Preference Designated Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183 Series E 9,600.00 9,600.00 360 Total at June 30, 2018 79,500.00 71,933.51 71,933.51 $ 5,413	Preferred Stock As of March 31 , 201 8 and March 2 5 , 201 7 Designated Shares Shares Liquidation Preference Shares Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Total at March 25, 2017 19,500.00 18,533.51 18,533.51 3,540 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Allowance for Credit Losses on Financing Receivables [Table Text Block]	(Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Beginning balance $ 45 $ 45 Provisions for doubtful accounts (37 ) — Write-off of doubtful accounts — — Ending balance $ 8 $ 45

Note 4 - Inventories 2 (Tables)

Note 4 - Inventories 2 (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Inventory, Current [Table Text Block]	(In thousands) June 30 , 201 8 March 31 , 201 8 Raw materials $ 1,147 $ 2,290 Work-in-progress 1,749 2,100 Finished goods 81 561 Demonstration inventory 461 536 Total $ 3,438 $ 5,487	Inventories consisted of the following: (Dollars in thousands) March 31 , 201 8 March 25 , 201 7 Raw materials $ 2,290 $ 1,775 Work-in-progress 2,100 2,155 Finished goods 561 473 Demonstration inventory 536 408 Total $ 5,487 $ 4,811

Note 5 - Property, Plant and _2

Note 5 - Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Property, Plant and Equipment [Table Text Block]	Property, plant and equipment, net is comprised of the following: (Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Leasehold improvements $ 633 327 Machinery and equipment 4,333 4,330 Computer and software 681 678 Furniture and office equipment 227 231 Subtotal 5,874 5,566 Less: accumulated depreciation and amortization (5,041 ) (5,038 ) Total $ 833 $ 528

Note 8 - Term Loans, Revolvin_2

Note 8 - Term Loans, Revolving Line of Credit and Warrants (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
PFG Loan [Member]
Notes Tables
Schedule of Debt Discount [Table Text Block]	<table style="margin-right: 20%; margin-left: 72pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 81%; padding-left: 0pt;">Fees paid to the lender and third parties</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Back-end fee</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td>Estimated fair value of embedded equity forward</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Fair value of 190,000 shares of common stock issued to lender</td> <td style="width: 1%;"> </td> <td style="width: 1%; border-bottom: thin solid rgb(0, 0, 0);"> </td> <td style="width: 16%; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000</div></td> <td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0); margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="padding-left: 9pt;">Aggregate discount amount</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>" id="sjs-B5">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table style="margin-right: 20%; margin-left: 72pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="width: 81%; padding-left: 0pt;">Fees paid to the lender and third parties&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Back-end fee&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td>Estimated fair value of embedded equity forward&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Fair value of 190,000 shares of common stock issued to lender&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%; border-bottom: thin solid rgb(0, 0, 0);">&nbsp;&lt;/td> &lt;td style="width: 16%; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000&lt;/div>&lt;/td> &lt;td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0); margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="padding-left: 9pt;">Aggregate discount amount&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>	<table style="margin-right: 10%; margin-left: 10%; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 81%;">Fees paid to the lender and third parties</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Back-end fee</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td>Estimated fair value of embedded equity forward</td> <td style="width: 1%;"> </td> <td style="width: 1%;"> </td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td>Fair value of 190,000 shares of common stock issued to lender</td> <td style="width: 1%;"> </td> <td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 16%; text-align: right; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000</div></td> <td style="width: 1%; padding-bottom: 1px; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="padding-left: 9pt;">Aggregate discount amount</td> <td style="width: 1%;"> </td> <td style="width: 1%;">$</td> <td style="width: 16%; text-align: right;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000</div></td> <td style="width: 1%; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>" id="sjs-C5">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table style="margin-right: 10%; margin-left: 10%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="width: 81%;">Fees paid to the lender and third parties&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">44,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Back-end fee&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">76,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td>Estimated fair value of embedded equity forward&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">49,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td>Fair value of 190,000 shares of common stock issued to lender&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%; border-bottom: 1px solid rgb(0, 0, 0);">&nbsp;&lt;/td> &lt;td style="width: 16%; text-align: right; border-bottom: 1px solid rgb(0, 0, 0);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">157,000&lt;/div>&lt;/td> &lt;td style="width: 1%; padding-bottom: 1px; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="padding-left: 9pt;">Aggregate discount amount&lt;/td> &lt;td style="width: 1%;">&nbsp;&lt;/td> &lt;td style="width: 1%;">$&lt;/td> &lt;td style="width: 16%; text-align: right;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">326,000&lt;/div>&lt;/td> &lt;td style="width: 1%; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>

Note 9 - Fair Value (Tables)

Note 9 - Fair Value (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]	Fair Value Measurements as of March 31, 2018 (In Thousands): Level 1 Level Level 3 Warrant Liability $ — — $ — Total $ — — $ — Fair Value Measurements as of March 25, 2017 (In Thousands): Level 1 Level Level 3 Warrant Liability $ — — $ 222 Total $ — $ — $ 222
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]	Years Ended (In thousands) Mar. 31 , 201 8 Mar. 2 5 , 201 7 Warrant liability at beginning of year $ 222 $ 353 Change in fair value of warrant liability (222 ) (131 ) Warrant liability at end of period $ — $ 222

Note 10 - Sale of Product Lin_2

Note 10 - Sale of Product Lines (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Asset Purchase Agreement [Table Text Block]	(In thousands) Cash received from Astronics $ 850 Cash paid to buy out future commission obligation (170 ) Employee severance (97 ) Legal fees (13 ) Commissions (46 ) Warranty liability released 278 Net gain recognized $ 802

Note 12 - Significant Custome_2

Note 12 - Significant Customers and Industry Segment Information (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Month Periods Ended Three Month Periods Ended (In thousands) At June 30 , 201 8 June 30 , 201 8 At June 2 4 , 201 7 June 2 4 , 201 7 Assets Net Sales Net Income (Loss) Assets Net Sales Net Income (Loss) Giga-tronics Division $ 4,418 $ 38 $ (1559 ) $ 6,153 $ 297 $ (1,849 ) Microsource 1,953 1,061 1,272 2,907 1,694 591 Total $ 6,371 $ 1,099 $ (287 ) $ 9,060 $ 1,991 $ (1,258 )	March 31 , 201 8 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 2,737 $ 7,063 $ 9,800 Interest expense, net (461 ) — (461 ) Depreciation and amortization 1,116 1 1,117 Capital expenditures (688 ) — (688 ) Income/(Loss) before income taxes (5,847 ) 2,748 (3,099 ) Assets 5,253 3,178 8,431 March 2 5 , 201 7 (Dollars in thousands) Giga-tronics Division Microsource Total Revenue $ 8,021 $ 8,246 $ 16,267 Interest expense, net 133 — 133 Depreciation and amortization 820 7 827 Capital expenditures 41 — 41 Income/(Loss) before income taxes (2,702 ) 1,158 (1,544 ) Assets 6,433 2,641 9,074
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]		(Dollars in thousands) March 31 , 201 8 March 2 5 , 201 7 Americas $ — $ — Europe 40 249 Asia — 15 Rest of world 702 64 Total $ 742 $ 328

Note 13 - Loss Per Common Sha_2

Note 13 - Loss Per Common Share (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended (In thousands ) June 30, 2018 June 24, 2017 (in thousands): Common shares issuable upon exercise of stock options 1,498 1,104 Restricted stock awards 262 350 Issuable shares for interest on loan 25 60 Common shares issuable upon conversion of convertible preferred stock 7,113 1,853 Common shares issuable upon exercise of warrants 3,960 3,737	Stock options not included in computation that could potentially dilute EPS in the future 1,479 1,105 Restricted stock awards not included in computation that could potentially dilute EPS in the future 300 — Convertible preferred stock not included in computation that could potentially dilute EPS in the future 1,858 1,853 Warrants not included in computation that could potentially dilute EPS in the future 3,960 3,737 7,597 6,695

Note 14 - Income Taxes (Tables)

Note 14 - Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	March 31, March 25, (in thousands) 2018 2017 Current Federal $ — $ — State 2 2 2 2 Deferred Federal 5,547 (496 ) State (393 ) (6 ) 5,154 (502 ) Change in liability for uncertain tax positions 2 14 Change in valuation allowance (5,156 ) 488 Provision for income taxes $ 2 $ 2
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	Fiscal years ended (In thousands) March 31 , 201 8 March 2 5 , 201 7 Net operating loss carryforwards $ 11,472 $ 15,984 Income tax credits 347 323 Inventory reserves and additional costs capitalized 787 1,450 Accrued vacation 40 109 Deferred rent 136 — Non-qualified stock options and restricted stock 2 5 Other 77 146 Total deferred tax assets 12,861 18,017 Valuation allowance (12,861 ) (18,017 ) Net deferred tax assets $ — $ —
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Fiscal years ended (In thousands except percentages) March 31 , 20 1 8 March 2 5 , 201 7 Statutory federal income tax (benefit) $ (955 ) 31.6 % $ (525 ) 34.0 % Valuation allowance (5,156 ) 170.1 488 (31.6 ) Effect of reduced corporate tax rates 6,207 (205.3 ) — — State income tax, net of federal benefit (177 ) 5.9 (90 ) 5.8 Net operating loss expiration — — 86 (5.6 ) Non-tax deductible expenses 46 (1.5 ) 77 (5.0 ) Tax credits (4 ) 0.1 (40 ) 2.6 Liability for uncertain tax positions — — 14 (0.9 ) Other 41 (0.9 ) (8 ) 0.5 Effective income tax $ 2 — $ 2 (0.2 )%
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	Fiscal Year s (In thousands) 2018 2017 Balance as of beginning of year $ 120 $ 106 Additions based on current year tax positions 2 14 (Reductions) additions for prior year tax positions — — Balance as of end of year $ 122 $ 120

Note 15 - Share-based Compens_2

Note 15 - Share-based Compensation and Employee Benefit Plans (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Three Months Ended June 30, 2018 June 2 4 , 2017 Dividend yield — — Expected volatility 92.55 % — Risk-free interest rate 2.82 % — Expected term (years) 8.36 —	Fiscal years ended March 31, 2018 March 25, 2017 Dividend yield — — Expected volatility 91 % 99 % Risk-free interest rate 2.40 % 1.45 % Expected term (years) 8.35 8.36
Share-based Compensation, Stock Options, Activity [Table Text Block]	Weighted Average Weighted Average Remaining Aggregate Shares Exercise Price per share Contractual Terms (Years) Intrinsic Value Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Granted 50,000 0.27 10.0 Forfeited / Expired (31,000 ) 1.41 Outstanding at June 30, 2018 1,497,700 $ 0.53 7.8 $ — Exercisable at June 30, 2018 500,650 $ 0.79 4.4 $ — At June 30, 2018 expected to vest in the future 702,491 $ 0.40 9.6 $ —	Weighted Weighted Average Remaining (Dollars in thousands except share prices) Shares Average Exercise Price per share Contractual Term (Years) Aggregate Intrinsic Value Outstanding at March 26, 2016 1,592,200 $ 1.52 6.8 $ 69 Granted 148,000 0.97 Exercised — — Forfeited / Expired (635,700 ) 1.57 Outstanding at March 25, 2017 1,104,500 $ 1.41 6.1 $ 3 Granted 856,000 0.34 10.0 Exercised — — Forfeited / Expired (481,800 ) 1.34 Outstanding at March 31, 2018 1,478,700 $ 0.56 8.0 $ — Exercisable at March 31, 2018 524,450 $ 0.81 4.8 $ — At March 31, 2018, expected to vest in the future 671,805 $ 0.42 9.8 $ —
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	Shares Weighted Average Fair Value Non-Vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-Vested at March 31, 2018 299,950 $ 0.65 Vested (37,500 ) (0.39 ) Non-Vested at June 30, 2018 262,450 $ 0.68	Shares Weighted Average Grant Date Fair Value Non-vested at March 26, 2016 — $ — Granted 44,500 0.66 Vested (44,500 ) 0.66 Forfeited or cancelled — — Non-vested at March 25, 2017 — $ — Granted 586,950 0.66 Vested (51,000 ) (0.60 ) Forfeited or cancelled (236,000 ) (0.68 ) Non-vested at March 31, 2018 299,950 $ 0.65

Note 16 - Commitments and Con_2

Note 16 - Commitments and Contingencies (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Fiscal year (Dollars in thousands) 2019 $ 436 2020 450 2021 464 2022 472 Thereafter 696 Total $ 2,518
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	Fiscal year (Dollars in thousands) Principal Interest Total 2019 $ 52 $ 12 $ 64 2020 40 5 45 2021 22 1 23 Total $ 114 $ 18 $ 132

Note 17 - Warranty Obligations

Note 17 - Warranty Obligations (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	(In thousands) Three Months Ended June 30 , 201 8 Three Months Ended June 2 4 , 201 7 Balance at beginning of period $ 164 $ 123 Provision, net 6 1 Warranty costs incurred (29 ) (33 ) Balance at end of period $ 141 $ 91	(In thousands) March 31 , 201 8 March 2 5 , 201 7 Balance as of beginning of year $ 123 $ 60 Provision, net 291 234 Warranty costs incurred (250 ) (171 ) Balance as of end of year $ 164 $ 123

Note 19 - Preferred Stock and_2

Note 19 - Preferred Stock and Warrants (Tables)	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Notes Tables
Schedule of Stock by Class [Table Text Block]	Preferred Stock Shares Shares Shares Liquidation Preference Designated Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183 Series E 9,600.00 9,600.00 360 Total at June 30, 2018 79,500.00 71,933.51 71,933.51 $ 5,413	Preferred Stock As of March 31 , 201 8 and March 2 5 , 201 7 Designated Shares Shares Liquidation Preference Shares Issued Outstanding (in thousands) Series B 10,000.00 9,997.00 9,997.00 $ 2,309 Series C 3,500.00 3,424.65 3,424.65 500 Series D 6,000.00 5,111.86 5,111.86 731 Total at March 25, 2017 19,500.00 18,533.51 18,533.51 3,540 Series E 60,000.00 43,800.00 43,800.00 1,643 Total at March 31, 2018 79,500.00 62,333.51 62,333.51 $ 5,183

Note 1 - Organization and Sig_3

Note 1 - Organization and Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 24, 2017
Revenue from Contract with Customer, Including Assessed Tax	$ 2,843,000	$ 1,991,000
Revenue, Performance Obligation, Recognized over Time	99.00%
Revenue, Performance Obligation, Recognized at Point in Time	1.00%
Technology Service [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 56,000

Note 1 - Organization and Sig_4

Note 1 - Organization and Significant Accounting Policies - Adoption of Topic 606 (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018		Mar. 25, 2017	Apr. 01, 2018
Prepaid expenses and other current assets	$ 792,000		$ 87,000	[1]	$ 452,000	$ 275,000
Inventories, net	3,438,000		5,487,000	[1]	4,811,000	3,906,000
Deferred revenue	257,000		3,374,000	[1]		806,000
Accumulated deficit	(27,793,000)		(28,682,000)		(25,581,000)	(27,506,000)
Revenue	2,843,000	$ 1,991,000
Costs of services	774,000	1,525,000
Net loss	$ (287,000)	$ (1,258,000)	$ (3,101,000)		$ (1,546,000)
Net loss per share, basic and fully diluted (in dollars per share)	$ (0.03)
Accounting Standards Update 2014-09 [Member]
Prepaid expenses and other current assets						188,000
Inventories, net						(1,581,000)
Deferred revenue						(2,568,000)
Accumulated deficit						$ 1,176,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Prepaid expenses and other current assets	$ 149,000
Inventories, net	5,406,000
Deferred revenue	2,966,000
Accumulated deficit	(29,177,000)
Revenue	2,247,000
Costs of services	416,000
Net loss	$ (525,000)
Net loss per share, basic and fully diluted (in dollars per share)	$ (0.05)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Prepaid expenses and other current assets	$ 643,000
Inventories, net	(1,968,000)
Deferred revenue	(2,709,000)
Accumulated deficit	1,384,000
Revenue	596,000
Costs of services	358,000
Net loss	$ (238,000)
Net loss per share, basic and fully diluted (in dollars per share)	$ 0.02
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 2 - Going Concern and Ma_3

Note 2 - Going Concern and Management's Plan (Details Textual)	Mar. 26, 2018USD ($)$ / sharesshares	Apr. 27, 2017USD ($)shares	Jun. 30, 2018USD ($)$ / sharesshares	Jun. 24, 2017USD ($)	Mar. 31, 2018USD ($)	Mar. 25, 2017USD ($)	Apr. 01, 2018USD ($)	Mar. 13, 2014USD ($)
Net Income (Loss) Attributable to Parent, Total			$ (287,000)	$ (1,258,000)	$ (3,101,000)	$ (1,546,000)
Retained Earnings (Accumulated Deficit), Ending Balance			(27,793,000)		(28,682,000)	(25,581,000)	$ (27,506,000)
Net Cash Provided by (Used in) Operating Activities, Total			(945,000)	(1,107,000)	(1,617,000)	(56,000)
Long-term Line of Credit, Total			582,000
Line of Credit Facility, Remaining Borrowing Capacity			143,000		77,000
Proceeds from Issuance of Convertible Preferred Stock, Net of Issuance Costs			$ 205,000		$ 993,000
Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues | shares	43,800		8,800
Preferred Stock, Dividend Rate, Percentage	6.00%
Issuance of Stock, Number of Investors	15
Shares Issued, Price Per Share | $ / shares	$ 25		$ 25
Proceeds from Issuance of Convertible Preferred Stock	$ 1,095,000		$ 220,000
Proceeds from Issuance of Convertible Preferred Stock, Net of Issuance Costs	$ 1,000,000
Convertible Preferred Stock, Conversion Price Per Share | $ / shares	$ 0.25
Convertible Preferred Stock, Shares Issued upon Conversion | shares	100
PFG Loan [Member]
Debt Instrument, Face Amount		$ 1,500,000						$ 2,000,000
Debt Instrument, Modification Agreement, Conditions, Gross Proceeds from Sale of Convertible Preferred Stock	$ 1,000,000
Stock Issued During Period, Shares, New Issues | shares		190,000

Note 3 - Revenue Recognition (D

Note 3 - Revenue Recognition (Details Textual)	Jun. 30, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Amount	$ 257,000

Note 3 - Revenue Recognition -

Note 3 - Revenue Recognition - Changes in Contract Assets and Liabilities (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2018USD ($)
Contract Assets, Balance	$ 189
Contract Assets, Additions	466
Contract Assets, Deductions	12
Contract Assets, Balance	643
Contract Liabilities: Deferred Revenue, Balance	806
Contract Liabilities: Deferred Revenue, Additions	(248)
Contract Liabilities: Deferred Revenue, Deductions	787
Contract Liabilities: Deferred Revenue, Balance	$ 257

Note 3 - Revenue Recognition _2

Note 3 - Revenue Recognition - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 24, 2017
Performance obligations satisfied	$ 559
Changes in estimates	(29)
Performance obligations satisfied	2,313
Revenue	2,843	$ 1,991
Service [Member]
Revenue	$ 2,843	$ 1,675

Note 4 - Inventories - Inventor

Note 4 - Inventories - Inventories, Net of Reserves (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Apr. 01, 2018	Mar. 31, 2018		Mar. 25, 2017
Raw materials	$ 1,147		$ 2,290		$ 1,775
Work-in-progress	1,749		2,100		2,155
Finished goods	81		561		473
Demonstration inventory	461		536		408
Total	$ 3,438	$ 3,906	$ 5,487	[1]	$ 4,811
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 5 - Accounts Receivable _2

Note 5 - Accounts Receivable Line of Credit (Details Textual) - USD ($)	Jun. 01, 2015	May 31, 2017	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017
Long-term Line of Credit, Total			$ 582,000
Line of Credit, Current			552,000	$ 552,000	[1]	$ 582,000
New Amended Credit Facility 2 [Member]
Long-term Line of Credit, Total	$ 2,500,000
Advance Rate	80.00%
Line of Credit Facility, Commitment Fee Amount		$ 12,500
Asset Coverage Ratio	150.00%
Accounts Receivable, Aging from Invoice Date	90 days
Line of Credit, Current			$ 552,000	$ 552,000
New Amended Credit Facility 2 [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
New Amended Credit Facility 2 [Member] | Borrowing Base for International Services Sub-Limit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,500,000
New Amended Credit Facility 2 [Member] | Formula-Basis Sub-Limit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	2,000,000
New Amended Credit Facility 2 [Member] | Non-Formula Basis Sub-Limit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 500,000
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 6 - Term Loans, Revolvin_3

Note 6 - Term Loans, Revolving Line of Credit and Warrants (Details Textual) - USD ($)	Mar. 26, 2018	Apr. 27, 2017	Jun. 30, 2018	Jun. 24, 2017	Mar. 25, 2018	Mar. 31, 2018	Mar. 31, 2018	Mar. 25, 2017	Jan. 19, 2016	Mar. 14, 2014	Mar. 13, 2014
Amortization of Debt Discount (Premium)			$ 50,000	$ 22,000				$ 22,000
Class of Warrant or Right, Exercise Price of Warrants or Rights									$ 1.15
Fair Value Adjustment of Warrants							(172,000)	$ (131,000)
PFG Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	260,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.25				$ 1.42
Class of Warrant or Right, Extension of Exercise Period	1 year
Fair Value Adjustment of Warrants	$ 43,700
PFG Loan [Member]
Debt Instrument, Face Amount		$ 1,500,000									$ 2,000,000
Debt Instrument, Interest Rate, Stated Percentage	16.00%	16.00%								9.75%
Debt Instrument, Cash Interest Rate		9.50%
Debt Instrument, Deferred Interest Rate		6.50%
Debt Instrument, Maximum Fee Amount to be Paid upon Maturity		$ 100,000
Debt Instrument, Fee Amount		76,000
Debt Instrument, Remaining Fee Amount		24,000
Debt Instrument, Remaining Fee Amount, Per Month		$ 1,000
Number of New Shares to be Issued, Maximum		250,000
Stock Issued During Period, Shares, New Issues		190,000
Number of New Shares to be Issued, Remaining		60,000
Number of New Shares to be Issued, Remaining, Per Month		2,500
Long-term Debt, Total		$ 1,576,000
Debt Instrument, Unamortized Discount, Total		$ 326,000
Amortization of Debt Discount (Premium)							$ 127,000
Stock Issued During Period, Shares, Loan Agreement			375,000			367,500
Debt Instrument, Interest Rate During Period					22.00%
Debt Instrument, Amount of Indebtedness Restructured	$ 1,700,000
Debt Instrument, Modification Agreement, Conditions, Gross Proceeds from Sale of Convertible Preferred Stock	$ 1,000,000

Note 6 - Term Loans, Revolvin_4

Note 6 - Term Loans, Revolving Line of Credit and Warrants - Debt Discount (Details) - PFG Loan [Member]	Apr. 27, 2017USD ($)
Aggregate discount amount	$ 326,000
Fees Paid to Lenders and Third Parties [Member]
Aggregate discount amount	44,000
Backend Fees [Member]
Aggregate discount amount	76,000
Estimated Fair Value of Derivatives [Member]
Aggregate discount amount	49,000
Equity Issued to Lenders [Member]
Aggregate discount amount	$ 157,000

Note 6 - Term Loans, Revolvin_5

Note 6 - Term Loans, Revolving Line of Credit and Warrants - Debt Discount (Details) (Parentheticals)	Apr. 27, 2017shares
PFG Loan [Member]
Common stock issued to lender (in shares)	190,000

Note 7 - Fair Value (Details Te

Note 7 - Fair Value (Details Textual) $ in Thousands	Mar. 26, 2018shares	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Mar. 26, 2018yr	Mar. 25, 2017
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure		$ 0	$ 0
Fair Value, Measurements, Nonrecurring [Member]
Assets, Fair Value Disclosure		0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure		$ 0	$ 0
PFG Warrants [Member]
Stock Issued During Period, Shares, Revaluation of Warrants | shares	150,000
PFG Warrants [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input	0.96			0.96	0.02
PFG Warrants [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input	0.85				1.011
PFG Warrants [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input	0.0212				0.0126
PFG Warrants [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Expected Dividend Rate [Member]
Derivative Liability, Measurement Input	0

Note 8 - Loss Per Share - Net L

Note 8 - Loss Per Share - Net Loss and Common Shares Used in Per Share Computations (Details) - shares shares in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Anti-dilutive securities excluded from computation of earning per share (in shares)			7,597	6,695
Equity Option [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	1,498	1,104	1,479	1,105
Restricted Stock [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	262	350	300
Common Shares Issuable for Debt Interest [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	25	60
Convertible Debt Securities [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	7,113	1,853	1,858	1,853
Warrant [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	3,960	3,737	3,960	3,737

Note 9 - Share Based Compensa_3

Note 9 - Share Based Compensation (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Employee Stock Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years		4 years
Employee Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years		5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years		10 years
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0		0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0	586,950	44,500
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 61,000		$ 97,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	317 days		324 days
Allocated Share-based Compensation Expense, Total	$ 37,000	$ 9,000	$ 107,000	$ 29,000
2000 Stock Option Plan and 2005 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,850,000		2,850,000
Percent Of Fair Market Value Of Common Stock At Date Of Grant	100.00%		100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	437,677		456,677
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 205,000		$ 215,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 259 days		3 years 328 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	7,200	26,500	143,900	272,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 9,052	$ 33,000	$ 163,000	$ 315,000
Proceeds from Stock Options Exercised	0	0	0
Allocated Share-based Compensation Expense, Total	$ 20,000	$ 37,000	$ 251,000	$ 257,000

Note 9 - Share Based Compensa_4

Note 9 - Share Based Compensation - Weighted Average Assumptions (Details)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Dividend yield
Expected volatility	92.55%		91.00%	99.00%
Risk-free interest rate	2.82%		2.40%	1.45%
Expected term (Year)	8 years 131 days		8 years 127 days	8 years 131 days

Note 9 - Share Based Compensa_5

Note 9 - Share Based Compensation - Changes in Stock Options Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Mar. 25, 2017	Mar. 26, 2016
Outstanding, Shares (in shares)	1,478,700	1,104,500	1,592,200
Outstanding, weighted average exercise price (in dollars per share)	$ 0.56	$ 1.41	$ 1.52
Outstanding, Weighted average remaining contractual terms (Year)	7 years 292 days	8 years	6 years 36 days	6 years 292 days
Outstanding			$ 3	$ 69
Granted, Shares (in shares)	50,000	856,000	148,000
Granted, weighted average exercise price (in dollars per share)	$ 0.27	$ 0.34	$ 0.97
Granted, Weighted average remaining contractual terms (Year)	10 years	10 years
Forfeited / Expired, Shares (in shares)	(31,000)	(481,800)	(635,700)
Forfeited / Expired, weighted average exercise price (in dollars per share)	$ 1.41	$ 1.34	$ 1.57
Outstanding, Shares (in shares)	1,497,700	1,478,700	1,104,500	1,592,200
Outstanding, weighted average exercise price (in dollars per share)	$ 0.53	$ 0.56	$ 1.41	$ 1.52
Exercisable, Shares (in shares)	500,650	524,450
Exercisable, weighted average exercise price (in dollars per share)	$ 0.79	$ 0.81
Exercisable, Weighted average remaining contractual terms (Year)	4 years 146 days	4 years 292 days
Exercisable
Expected to vest in the future, Shares (in shares)	702,491	671,805
Expected to vest in the future, weighted average exercise price (in dollars per share)	$ 0.40	$ 0.42
Expected to vest in the future, Weighted average remaining contractual terms (Year)	9 years 219 days	9 years 292 days
Expected to vest in the future

Note 9 - Share Based Compensa_6

Note 9 - Share Based Compensation - Changes in Nonvested Restricted Stock Awards Outstanding (Details) - Restricted Stock [Member] - $ / shares	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Non-Vested at March 25, 2017 (in shares)	299,950	0	0	0
Non-Vested at March 25, 2017 (in dollars per share)	$ 0.65	$ 0	$ 0	$ 0
Granted, Shares (in shares)	0	0	586,950	44,500
Granted, Weighted average fair value (in dollars per share)			$ 0.66	$ 0.66
Vested, Shares (in shares)	(37,500)		(51,000)	(44,500)
Vested, Weighted average fair value (in dollars per share)	$ (0.39)		$ (0.60)	$ (0.66)
Forfeited or cancelled (in shares)			(236,000)	0
Forfeited or cancelled, Weighted average fair value (in dollars per share)			$ (0.68)	$ 0
Non-Vested at March 31, 2018 (in shares)	262,450		299,950	0
Non-Vested at March 31, 2018 (in dollars per share)	$ 0.68		$ 0.65	$ 0

Note 10 - Significant Custome_3

Note 10 - Significant Customer and Industry Segment Information (Details Textual)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Number of Reportable Segments	2		2
Number of Major Customers			2
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Number of Major Customers	2		2
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | First Customer [Member] | Microsource [Member]
Concentration Risk, Percentage	64.00%	43.00%	29.00%	33.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Second Customer [Member] | Microsource [Member]
Concentration Risk, Percentage	31.00%	37.00%

Note 10 - Significant Custome_4

Note 10 - Significant Customer and Industry Segment Information - Breakdown of Customer and Segment Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018		Mar. 25, 2017
Assets	$ 6,371,000	$ 9,060,000	$ 8,431,000	[1]	$ 9,074,000
Sales Revenue	2,843,000	1,991,000
Net Income (Loss) Attributable to Parent, Total	(287,000)	(1,258,000)	(3,101,000)		(1,546,000)
Gigatronics Division [Member]
Assets	4,418,000	6,153,000	5,253,000		6,433,000
Sales Revenue	38,000	297,000
Net Income (Loss) Attributable to Parent, Total	(1,559,000)	(1,849,000)
Microsource [Member]
Assets	1,953,000	2,907,000	$ 3,178,000		$ 2,641,000
Sales Revenue	1,061,000	1,694,000
Net Income (Loss) Attributable to Parent, Total	$ 1,272,000	$ 591,000
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Dec. 31, 2018	Mar. 31, 2018	Mar. 25, 2017	Mar. 26, 2016
Income Tax Expense (Benefit), Total	$ 62,000	$ 0		$ 2,000	$ 2,000
Income Tax Examination, Increase (Decrease) in Liability from Prior Year	$ 62,000
Effective Income Tax Rate Reconciliation, Percent, Total	0.00%	0.00%			(0.20%)
Unrecognized Tax Benefits, Ending Balance	$ 122,000			$ 122,000	$ 120,000	$ 106,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total				$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				31.55%	34.00%
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member]
Accrued Income Taxes, Total	$ 107,000			$ 45,000

Note 12 - Warranty Obligation_2

Note 12 - Warranty Obligations - Reconciliation of Company's Estimated Warranty Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Balance at beginning of period	$ 164	$ 123	$ 123	$ 60
Provision, net	6	1	291	234
Warranty costs incurred	(29)	(33)	(250)	(171)
Balance at end of period	$ 141	$ 91	$ 164	$ 123

Note 13 - Preferred Stock and_3

Note 13 - Preferred Stock and Warrants (Details Textual) - USD ($)	Mar. 26, 2018	Apr. 27, 2017	Jun. 30, 2018	Mar. 31, 2018	Mar. 25, 2017	Mar. 25, 2018	Jan. 19, 2016
Payments of Stock Issuance Costs				$ 102,000
Class of Warrant or Right, Exercise Price of Warrants or Rights							$ 1.15
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right							0.75
Beneficial Conversion Feature Upon Issuance of Preferred Shares
Fair Value of Warrants Issued as Issuance Costs for Preferred Stock				$ 54,000
PFG Loan [Member]
Stock Issued During Period, Shares, New Issues		190,000
Debt Instrument, Amount of Indebtedness Restructured	$ 1,700,000
Series E Preferred Stock Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Percentage of Common Shares Into Which the Preferred Shares Can Be Converted	5.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	223,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.25
The 2016 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights							2,787,872
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.25						$ 1.15
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right							0.75
Class of Warrant or Right, Exercise Price of Warrants or Rights, Alternative Price for Certain Investors							$ 0.25
Class of Warrant or Right, Exercise Price Reduction, Number	1,759,268
Placement Agent Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.25					$ 1.15
Class of Warrant or Right, Exercise Price Reduction, Number	292,727
Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues	43,800		8,800
Preferred Stock, Dividend Rate, Percentage	6.00%
Issuance of Stock, Number of Investors	15
Shares Issued, Price Per Share	$ 25		$ 25
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 1,095,000
Proceeds from Issuance of Preferred Stock and Preference Stock, Net of Issuance Costs	$ 1,000,000
Stock Issued During Period, Placement Agent Fees, Percentage of Gross Proceeds	5.00%
Payments of Stock Issuance Costs	$ 57,000
Convertible Preferred Stock, Conversion Price Per Share	$ 0.25
Convertible Preferred Stock, Shares Issued upon Conversion	100
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted	4,380,000			4,380,000
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted, Percentage of Pro Forma Common Stock	31.00%			31.00%
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted, Percentage of Pro Forma Common Stock If All Classes of Convertible Preferred Stock Were Converted	27.00%			27.00%
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted, Percentage of Pro Forma Common Stock If All Convertible Preferred Stock Were Converted and All Warrants Exercised	22.00%			22.00%
Preferred Stock, Redemption Price Percentage	300.00%			300.00%
Preferred Stock, Redemption Price Per Share	$ 75			$ 75
Preferred Stock, Liquidation Preference, Percentage	150.00%
Preferred Stock, Liquidation Preference Per Share	$ 37.50
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Shares	22,300
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Percentage	50.00%
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Closing Price	$ 0.75
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Trading Volume	100,000
Preferred Stock, Investor Rights Agreement, Period During Which Payment-in-kind Dividends May Potentially Be Received	2 years
Preferred Stock, Investor Rights Agreement, Ability to Issue Additional Debt Other Than Trade Debt and Commercial Bank Working Capital Debt, Required Percentage of Approval By Holders	66.60%
Issuance of Preferred Stock, Amount Deducted from Gross Proceeds Attributable to the Re-pricing of Warrants	$ 203,000
Beneficial Conversion Feature Upon Issuance of Preferred Shares	557,000
Fair Value of Warrants Issued as Issuance Costs for Preferred Stock	53,000
Proceeds from Issuance of Convertible Preferred Stock	1,095,000		$ 220,000
Series E Preferred Stock [Member] | The 2016 Warrants [Member]
Class of Warrant or Right, Alternative Exercise Price, Criteria, Amount of Preferred Stock Purchased	$ 200,000
Class of Warrant or Right, Alternative Exercise Price, Criteria, Percentage of Preferred Stock Purchased	50.00%

Note 13 - Preferred Stock and_4

Note 13 - Preferred Stock and Warrants - Preferred Stock Information (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017	Jul. 08, 2013	Feb. 19, 2013	Nov. 10, 2011
Designated shares (in shares)	1,000,000	1,000,000	[1]	1,000,000
Series B Preferred Stock [Member]
Designated shares (in shares)		10,000		10,000
Preferred Stock, Shares Issued, Total		9,997		9,997			9,997
Shares outstanding (in shares)		9,997		9,997
Liquidation preference		$ 2,309		$ 2,309
Series C Preferred Stock [Member]
Designated shares (in shares)		3,500		3,500
Preferred Stock, Shares Issued, Total		3,424.65		3,424.65		3,424.65
Shares outstanding (in shares)		3,424.65		3,424.65
Liquidation preference		$ 500		$ 500
Series D Preferred Stock [Member]
Designated shares (in shares)		6,000		6,000
Preferred Stock, Shares Issued, Total		5,111.86		5,111.86	5,111.86
Shares outstanding (in shares)		5,111.86		5,111.86
Liquidation preference		$ 731		$ 731
Series E Preferred Stock [Member]
Designated shares (in shares)	60,000	60,000	[1]
Preferred Stock, Shares Issued, Total	53,400	43,800	[1]
Shares outstanding (in shares)	53,400	43,800	[1]
Liquidation preference	$ 2,003	$ 1,643	[1]
Series B, C, D, and E Preferred Stock [Member]
Designated shares (in shares)	79,500	79,500
Preferred Stock, Shares Issued, Total	71,933.51	62,333.51
Shares outstanding (in shares)	71,933.51	62,333.51
Liquidation preference	$ 5,413	$ 5,183
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 14 - Subsequent Events (De

Note 14 - Subsequent Events (Details Textual) - Series E Preferred Stock [Member] - USD ($)	Aug. 13, 2018	Mar. 26, 2018	May 31, 2018	Apr. 30, 2018	Jun. 30, 2018
Stock Issued During Period, Shares, New Issues		43,800			8,800
Shares Issued, Price Per Share		$ 25			$ 25
Proceeds from Issuance of Convertible Preferred Stock		$ 1,095,000			$ 220,000
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues	1,400		2,400	6,000
Shares Issued, Price Per Share	$ 25		$ 25	$ 25
Proceeds from Issuance of Convertible Preferred Stock	$ 35,000		$ 60,000	$ 150,000

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual)	Mar. 26, 2018USD ($)shares	Jun. 30, 2018USD ($)$ / sharesshares	Jun. 24, 2017USD ($)	Mar. 31, 2018USD ($)$ / sharesshares	Mar. 25, 2017USD ($)$ / sharesshares	Mar. 28, 2015USD ($)
Number of Major Customers				2
Unbilled Receivables, Not Billable, Amount Expected to be Collected in Remainder of Fiscal Year						$ 6,500,000
Revenue Recognition, Milestone Method, Revenue Recognized				$ 0	$ 478,000
Research and Development Expense, Total		$ 375,000	$ 452,000	1,794,000	$ 2,254,000
Asset Impairment Charges, Total				$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares		50,000		856,000	148,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares		$ 0.27		$ 0.34	$ 0.97
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers				1	3
Concentration Risk, Percentage				79.00%	67.00%
Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares				400,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares				$ 0.33
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | shares				36
Equity Incentive Plan 2005 [Member] | Employee Stock Option [Member] | Vesting on the First Anniversary of the Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				25.00%
Equity Incentive Plan 2005 [Member] | Employee Stock Option [Member] | Vesting Monthly On Each of the 36 Months Following the First Anniversary of the Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				2.083%
PFG Warrants [Member]
Class of Warrant or Right, Cash Put Provision Eliminated	$ 217,000
Stock Issued During Period, Shares, Revaluation of Warrants | shares	150,000
Stock Issued During Period, Value, Revaluation of Warrants	$ 50,000
Minimum [Member]
Warranty Term				1 year
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life				3 years
Maximum [Member]
Warranty Term				3 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life				10 years

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Activity in the Reserve Account (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018		Mar. 25, 2017
Beginning balance	$ 45		$ 45
Provisions for doubtful accounts	(37)
Write-off of doubtful accounts
Ending balance	$ 8	[1]	$ 45
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 2 - Going Concern and Ma_4

Note 2 - Going Concern and Management's Plan (Details Textual)	Mar. 26, 2018USD ($)$ / sharesshares	Apr. 27, 2017USD ($)shares	Jun. 30, 2018USD ($)$ / sharesshares	Jun. 24, 2017USD ($)	Mar. 31, 2018USD ($)		Mar. 25, 2017USD ($)	Apr. 01, 2018USD ($)	Mar. 13, 2014USD ($)
Net Income (Loss) Attributable to Parent, Total			$ (287,000)	$ (1,258,000)	$ (3,101,000)		$ (1,546,000)
Retained Earnings (Accumulated Deficit), Ending Balance			(27,793,000)		(28,682,000)		(25,581,000)	$ (27,506,000)
Working Capital					(386,000)		620,000
Line of Credit, Current			552,000		552,000	[1]	582,000
Line of Credit Facility, Remaining Borrowing Capacity			143,000		77,000
Proceeds from Issuance of Convertible Preferred Stock, Net of Issuance Costs			$ 205,000		$ 993,000
Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues | shares	43,800		8,800
Preferred Stock, Dividend Rate, Percentage	6.00%
Issuance of Stock, Number of Investors	15
Shares Issued, Price Per Share | $ / shares	$ 25		$ 25
Proceeds from Issuance of Convertible Preferred Stock	$ 1,095,000		$ 220,000
Proceeds from Issuance of Convertible Preferred Stock, Net of Issuance Costs	$ 1,000,000
Convertible Preferred Stock, Conversion Price Per Share | $ / shares	$ 0.25
Convertible Preferred Stock, Shares Issued upon Conversion | shares	100
PFG Loan [Member]
Debt Instrument, Face Amount		$ 1,500,000							$ 2,000,000
Debt Instrument, Modification Agreement, Conditions, Gross Proceeds from Sale of Convertible Preferred Stock	$ 1,000,000
Stock Issued During Period, Shares, New Issues | shares		190,000
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 3 - Cash and Cash-equiva_2

Note 3 - Cash and Cash-equivalents (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Jun. 24, 2017	Mar. 25, 2017	Mar. 26, 2016
Cash and Cash Equivalents, at Carrying Value, Ending Balance	$ 748	$ 1,485	$ 1,137	$ 1,421	$ 1,331
Cash, Uninsured Amount		$ 1,200

Note 4 - Inventories - Invent_2

Note 4 - Inventories - Inventories, Net of Reserves 2 (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Apr. 01, 2018	Mar. 31, 2018		Mar. 25, 2017
Raw materials	$ 1,147		$ 2,290		$ 1,775
Work-in-progress	1,749		2,100		2,155
Finished goods	81		561		473
Demonstration inventory	461		536		408
Total	$ 3,438	$ 3,906	$ 5,487	[1]	$ 4,811
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 5 - Property, Plant and _3

Note 5 - Property, Plant and Equipment, Net - Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017
Property, plant, and equipment, gross		$ 5,874		$ 5,566
Less: accumulated depreciation and amortization		(5,041)		(5,038)
Total	$ 760	833	[1]	528
Leasehold Improvements [Member]
Property, plant, and equipment, gross		633		327
Machinery and Equipment [Member]
Property, plant, and equipment, gross		4,333		4,330
Computer Equipment [Member]
Property, plant, and equipment, gross		681		678
Furniture and Fixtures [Member]
Property, plant, and equipment, gross		$ 227		$ 231
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 6 - Software Development_2

Note 6 - Software Development Costs (Details Textual) - USD ($)	Sep. 03, 2015	Dec. 24, 2016	Mar. 31, 2018	Mar. 25, 2017
Capitalized Software Development Costs for Software Sold to Customers			$ 0	$ 733,000
Costs of Capitalized Software, Amortization Period		3 years
Capitalized Computer Software, Amortization			$ 733,000
OLS Technology [Member]
Research and Development Expense, Software (Excluding Acquired in Process Cost)	$ 1,200,000
Royalties Percentage	7.00%

Note 7 - Accounts Receivable _2

Note 7 - Accounts Receivable Line of Credit (Details Textual) - USD ($)	Jun. 01, 2015	May 31, 2017	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017
Long-term Line of Credit, Total			$ 582,000
Line of Credit, Current			552,000	$ 552,000	[1]	$ 582,000
Line of Credit Facility, Remaining Borrowing Capacity			143,000	$ 77,000
New Amended Credit Facility 2 [Member]
Long-term Line of Credit, Total	$ 2,500,000
Advance Rate	80.00%
Debt Instrument, Variable Interest Rate				4.50%
Debt Instrument, Interest Rate, Effective Percentage				6.00%
Line of Credit Facility, Commitment Fee Amount		$ 12,500
Asset Coverage Ratio	150.00%
Accounts Receivable, Aging from Invoice Date	90 days
Line of Credit, Current			$ 552,000	$ 552,000
Line of Credit Facility, Remaining Borrowing Capacity				$ 77,000
New Amended Credit Facility 2 [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
New Amended Credit Facility 2 [Member] | Borrowing Base for International Services Sub-Limit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,500,000
New Amended Credit Facility 2 [Member] | Formula-Basis Sub-Limit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	2,000,000
New Amended Credit Facility 2 [Member] | Non-Formula Basis Sub-Limit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 500,000
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 8 - Term Loans, Revolvin_3

Note 8 - Term Loans, Revolving Line of Credit and Warrants (Details Textual) - USD ($)	Mar. 26, 2018	Jun. 17, 2017	Apr. 27, 2017	Jun. 03, 2015	Jun. 16, 2014	Mar. 14, 2014	Mar. 14, 2014	Mar. 13, 2014	Jul. 31, 2015	Jun. 30, 2018	Jun. 24, 2017	Mar. 25, 2018	Mar. 31, 2018	Mar. 31, 2018	Mar. 25, 2017	Mar. 26, 2016	Mar. 25, 2017	Jan. 19, 2016
Amortization of Debt Discount (Premium)										$ 50,000	$ 22,000				$ 22,000
Class of Warrant or Right, Exercise Price of Warrants or Rights																		$ 1.15
Fair Value Adjustment of Warrants														(172,000)	(131,000)
Line of Credit Facility, Remaining Borrowing Capacity										143,000			$ 77,000	77,000
Long-term Line of Credit, Total										$ 582,000
Repayments of Lines of Credit														30,000	218,000
Repayments of Long-term Debt, Total															400,000
Common Stock [Member]
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, Loan Agreement														367,500,000
Partners For Growth IV, L.P. [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 500,000
Repayments of Lines of Credit									$ 500,000
PFG Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	260,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.25											$ 1.42
Class of Warrant or Right, Extension of Exercise Period	1 year
Fair Value Adjustment of Warrants	$ 43,700
Stock Issued During Period, Shares, Revaluation of Warrants	150,000
Stock Issued During Period, Value, Revaluation of Warrants	$ 50,000
PFG Loan [Member]
Debt Instrument, Face Amount			$ 1,500,000					$ 2,000,000
Debt Instrument, Interest Rate, Stated Percentage	16.00%		16.00%			9.75%	9.75%
Debt Instrument, Cash Interest Rate			9.50%
Debt Instrument, Deferred Interest Rate			6.50%
Debt Instrument, Maximum Fee Amount to be Paid upon Maturity			$ 100,000
Debt Instrument, Fee Amount			76,000
Debt Instrument, Remaining Fee Amount			24,000
Debt Instrument, Remaining Fee Amount, Per Month			$ 1,000
Debt Instrument, Reduction in Fee Amount Contingent on Meeting or Exceeding Minimums			25.00%
Number of New Shares to be Issued, Maximum			250,000
Stock Issued During Period, Shares, New Issues			190,000
Number of New Shares to be Issued, Remaining			60,000
Number of New Shares to be Issued, Remaining, Per Month			2,500
Long-term Debt, Total			$ 1,576,000
Debt Instrument, Unamortized Discount, Total			$ 326,000
Amortization of Debt Discount (Premium)														$ 127,000
Stock Issued During Period, Shares, Loan Agreement										375,000			367,500
Debt Instrument, Interest Rate During Period												22.00%
Debt Instrument, Amount of Indebtedness Restructured	$ 1,700,000
Debt Instrument, Modification Agreement, Conditions, Gross Proceeds from Sale of Convertible Preferred Stock	$ 1,000,000
Debt Instrument, Term						2 years 180 days		3 years
Proceeds from Issuance of Debt							$ 1,000,000
Repayments of Long-term Debt, Total																	$ 1,000,000
Derivative Liability, Fair Value, Gross Liability, Total															222,000		222,000
PFG Loan [Member] | Common Stock [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights						300,000	300,000
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 1.42	$ 1.42
Class of Warrant or Right, Term						5 years
PFG Loan [Member] | Prepaid Expenses and Other Current Assets [Member]
Payments of Debt Issuance Costs					$ 15,000	$ 30,000
PFG Loan [Member] | Achievement of Performance Milestones First Half of Fiscal 2015 [Member]
Line of Credit Facility, Remaining Borrowing Capacity						$ 1,000,000	$ 1,000,000
PFG Loan [Member] | Under First Draw [Member]
Debt Instrument, Unamortized Discount, Total				$ 178,000
Long-term Debt, Gross				822,000
PFG Loan [Member] | Under First Draw [Member] | Common Stock [Member]
Class of Warrant or Right, Outstanding						180,000	180,000
Class of Warrant or Right, Exchanged for Cash, Amount						$ 150,000	$ 150,000
PFG Loan [Member] | Amendment [Member]
Debt Instrument, Unamortized Discount, Total				135,000
Long-term Debt, Gross				$ 365,000
PFG Loan [Member] | Amendment [Member] | Common Stock [Member]
Class of Warrant or Right, Outstanding					80,000
Class of Warrant or Right, Cancelled During Period				40,000
Class of Warrant or Right, Exchanged for Cash, Amount						$ 67,000	$ 67,000
PFG Loan [Member] | Partners For Growth IV, L.P. [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 500,000
PFG Loan [Member] | Partners For Growth IV, L.P. [Member] | Revolving Credit Facility [Member]
Debt Instrument, Interest Rate, Stated Percentage						12.50%	12.50%
Debt Instrument, Term		2 years 270 days
Long-term Line of Credit, Total				$ 500,000
Repayments of Lines of Credit				150,000												$ 500,000
Line of Credit Facility, Periodic Payment, Principal				10,000
Warrant Debt [Member] | Under First Draw [Member]
Derivative Liability, Fair Value, Gross Liability, Total															133,000		133,000
Long-term Debt, Gross				178,000
Warrant Debt [Member] | Amendment [Member]
Derivative Liability, Fair Value, Gross Liability, Total															$ 89,000		$ 89,000
Long-term Debt, Gross				$ 135,000

Note 8 - Term Loans, Revolvin_4

Note 8 - Term Loans, Revolving Line of Credit and Warrants - Debt Discount (Details) - PFG Loan [Member]	Apr. 27, 2017USD ($)
Aggregate discount amount	$ 326,000
Fees Paid to Lenders and Third Parties [Member]
Aggregate discount amount	44,000
Backend Fees [Member]
Aggregate discount amount	76,000
Estimated Fair Value of Derivatives [Member]
Aggregate discount amount	49,000
Equity Issued to Lenders [Member]
Aggregate discount amount	$ 157,000

Note 8 - Term Loans, Revolvin_5

Note 8 - Term Loans, Revolving Line of Credit and Warrants - Debt Discount (Details) (Parentheticals)	Apr. 27, 2017shares
PFG Loan [Member]
Common stock issued to lender (in shares)	190,000

Note 9 - Fair Value (Details Te

Note 9 - Fair Value (Details Textual) - PFG Warrants [Member]	Mar. 26, 2018shares	Mar. 26, 2018yr	Mar. 25, 2017
Stock Issued During Period, Shares, Revaluation of Warrants	150,000
Fair Value, Measurements, Recurring [Member] | Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input	0.96	0.96	0.02
Fair Value, Measurements, Recurring [Member] | Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input	0.85		1.011
Fair Value, Measurements, Recurring [Member] | Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input	0.0212		0.0126
Fair Value, Measurements, Recurring [Member] | Measurement Input, Discount Rate [Member]
Derivative Liability, Measurement Input			0.24
Fair Value, Measurements, Recurring [Member] | Measurement Input, Expected Dividend Rate [Member]
Derivative Liability, Measurement Input	0

Note 9 - Fair Value - Fair Valu

Note 9 - Fair Value - Fair Value Measurements (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 25, 2017
Fair Value, Inputs, Level 1 [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Fair Value, Inputs, Level 2 [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Fair Value, Inputs, Level 3 [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure		222
Warrant [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative liabilities
Warrant [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative liabilities
Warrant [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative liabilities		$ 222

Note 9 - Fair Value - Reconcili

Note 9 - Fair Value - Reconciliation of the Warrant Liability (Details) - Derivative Financial Instruments, Liabilities [Member] - Fair Value, Inputs, Level 3 [Member] - Warrant [Member] - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Warrant liability at beginning of year	$ 222	$ 353
Change in fair value of warrant liability	(222)	(131)
Warrant liability at end of period		$ 222

Note 10 - Sale of Product Lin_3

Note 10 - Sale of Product Lines (Details Textual) - USD ($)	Jul. 28, 2016	Jun. 20, 2016	Dec. 15, 2015	Jun. 30, 2016	Aug. 31, 2016	Jun. 30, 2018	Dec. 30, 2017	Jun. 24, 2017	Jun. 25, 2016	Mar. 26, 2016	Jun. 25, 2016	Mar. 31, 2018	Mar. 25, 2017
Proceeds from Sales of Business, Affiliate and Productive Assets													$ 1,225,000
Gain (Loss) on Sale of Business, Affiliated and Productive Assets												324,000	802,000
Revenues, Total												9,800,000	16,267,000
Gross Profit, Total						$ 1,306,000		$ 466,000				2,736,000	4,551,000
Gigatronics Division [Member]
Revenues, Total												2,737,000	8,021,000
Switch Product Line [Member]
Revenues, Total												0	2,100,000
Gross Profit, Total													437,000
Power Meters, Amplifiers, and Legacy Signal Generators [Member] | Gigatronics Division [Member] | Operating Segments [Member]
Revenues, Total												$ 0	$ 437,000
Astronics Test Systems Inc [Member] | Switch Product Line [Member]
Proceeds from Sales of Business, Affiliate and Productive Assets		$ 850,000							$ 850,000
Gain (Loss) on Sale of Business, Affiliated and Productive Assets									802,000
Standard Product Warranty Accrual, Period Increase (Decrease), Total									$ (278,000)
Sales Commision									3.00%		3.00%
Sales Commission, Term									4 years
Cash Paid to Buy Out Future Commission Obligation				$ 170,000					$ 170,000
Proceeds from sale of Inventory					$ 500,000
Spanawave [Member]
Proceeds from Sales of Business, Affiliate and Productive Assets	$ 375,000								375,000	$ 375,000	$ 750,000
Gain (Loss) on Sale of Business, Affiliated and Productive Assets							$ 324,000
Proceeds from sale of Inventory				$ 275,000
Purchase Agreement, Proceeds Not Realized			$ 1,500,000
Loss Contingency, Estimate of Possible Loss									$ 440,000		$ 440,000
Return of Payment	$ 375,000
Sale of Business, Affiliated and Productive Assets, Selling Expense							$ 51,000

Note 10 - Sale of Product Lin_4

Note 10 - Sale of Product Lines - Asset Purchase Agreement (Details) - USD ($)	Jun. 20, 2016	Jun. 30, 2016	Jun. 25, 2016	Mar. 31, 2018	Mar. 25, 2017
Cash received from Astronics					$ 1,225,000
Gain (Loss) on Sale of Business, Affiliated and Productive Assets				$ 324,000	$ 802,000
Astronics Test Systems Inc [Member] | Switch Product Line [Member]
Cash received from Astronics	$ 850,000		$ 850,000
Cash paid to buy out future commission obligation		$ (170,000)	(170,000)
Employee severance			(97,000)
Legal fees			(13,000)
Commissions			(46,000)
Warranty liability released			278,000
Gain (Loss) on Sale of Business, Affiliated and Productive Assets			$ 802,000

Note 11 - Selling and Adverti_2

Note 11 - Selling and Advertising Expenses (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Sales Commissions and Fees	$ 43,000	$ 121,000
Advertising Expense	$ 23,000	$ 58,000

Note 12 - Significant Custome_3

Note 12 - Significant Customers and Industry Segment Information (Details Textual)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Number of Reportable Segments	2		2
Number of Major Customers			2
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Number of Major Customers	2		2
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | U.S. Government and Defense-related Customers [Member]
Concentration Risk, Percentage			88.00%	78.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | First Customer [Member] | Microsource [Member]
Concentration Risk, Percentage	64.00%	43.00%	29.00%	33.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Second Customer [Member] | Microsource [Member]
Concentration Risk, Percentage	31.00%	37.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Second Customer [Member] | Gigatronics Division [Member]
Concentration Risk, Percentage			20.00%	20.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Third Customer [Member] | Microsource [Member]
Concentration Risk, Percentage			41.00%	14.00%
Export Sales [Member]
Concentration Risk, Percentage			8.00%	2.00%

Note 12 - Significant Custome_4

Note 12 - Significant Customers and Industry Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018		Mar. 25, 2017
Revenue			$ 9,800		$ 16,267
Interest expense, net			(461)		133
Depreciation and amortization	$ 73	$ 247	1,116		827
Capital expenditures			(688)		(41)
Income/(Loss) before income taxes	(247)	(1,258)	(3,099)		(1,544)
Assets	6,371	9,060	8,431	[1]	9,074
Capital expenditures			688		41
Gigatronics Division [Member]
Revenue			2,737		8,021
Interest expense, net			(461)		133
Depreciation and amortization			1,116		820
Capital expenditures			(688)		(41)
Income/(Loss) before income taxes			(5,847)		(2,702)
Assets	4,418	6,153	5,253		6,433
Capital expenditures			688		41
Microsource [Member]
Revenue			7,063		8,246
Interest expense, net
Depreciation and amortization			1		7
Capital expenditures
Income/(Loss) before income taxes			2,748		1,158
Assets	$ 1,953	$ 2,907	3,178		2,641
Capital expenditures
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 12 - Significant Custome_5

Note 12 - Significant Customers and Industry Segment Information - Export Sales by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Revenue	$ 9,800	$ 16,267
Export Sales [Member]
Revenue	742	328
Export Sales [Member] | Americas [Member]
Revenue
Export Sales [Member] | Europe [Member]
Revenue	40	249
Export Sales [Member] | Asia [Member]
Revenue		15
Export Sales [Member] | Rest of World [Member]
Revenue	$ 702	$ 64

Note 13 - Loss Per Common Sha_3

Note 13 - Loss Per Common Share - Net Loss and Common Shares Used in Per Share Computations (Details) - shares shares in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Anti-dilutive securities excluded from computation of earning per share (in shares)			7,597	6,695
Equity Option [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	1,498	1,104	1,479	1,105
Restricted Stock [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	262	350	300
Convertible Debt Securities [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	7,113	1,853	1,858	1,853
Warrant [Member]
Anti-dilutive securities excluded from computation of earning per share (in shares)	3,960	3,737	3,960	3,737

Note 14 - Income Taxes (Details

Note 14 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Mar. 25, 2017	Jun. 30, 2018	Mar. 26, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		31.55%	34.00%
Deferred Tax Assets, Increase (Decrease) from the Tax Cuts and Jobs Act		$ (5,200,000)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		(5,156,000)
Unrecognized Tax Benefits, Ending Balance		122,000	$ 120,000	$ 122,000	$ 106,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total		0
Domestic Tax Authority [Member]
Operating Loss Carryforwards, Total		$ 46,539,000
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Open Tax Year		2,013
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		$ 24,322,000
State and Local Jurisdiction [Member] | Earliest Tax Year [Member] | California Franchise Tax Board [Member]
Open Tax Year		2,012
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%

Note 14 - Income Taxes - Compon

Note 14 - Income Taxes - Components of the Provision for Income Taxes (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Current
Federal
State			2,000	2,000
			2,000	2,000
Deferred
Federal			5,547,000	(496,000)
State			(393,000)	(6,000)
			5,154,000	(502,000)
Liability for uncertain tax positions				14,000
Valuation allowance			(5,156,000)	488,000
Provision for income taxes	$ 62,000	$ 0	$ 2,000	$ 2,000

Note 14 - Income Taxes - Deferr

Note 14 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 25, 2017
Net operating loss carryforwards	$ 11,472	$ 15,984
Income tax credits	347	323
Inventory reserves and additional costs capitalized	787	1,450
Accrued vacation	40	109
Deferred rent	136
Non-qualified stock options and restricted stock	2	5
Other	77	146
Total deferred tax assets	12,861	18,017
Valuation allowance	(12,861)	(18,017)
Net deferred tax assets

Note 14 - Income Taxes - Effect

Note 14 - Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Statutory federal income tax (benefit)			$ (955,000)	$ (525,000)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			31.55%	34.00%
Valuation allowance			$ (5,156,000)	$ 488,000
Valuation allowance			170.10%	(31.60%)
Effect of reduced corporate tax rates			$ 6,207,000
Effect of reduced corporate tax rates			(205.30%)
State income tax, net of federal benefit			$ (177,000)	$ (90,000)
State income tax, net of federal benefit			5.90%	5.80%
Net operating loss expiration				$ 86,000
Net operating loss expiration				(5.60%)
Non-tax deductible expenses			$ 46,000	$ 77,000
Non-tax deductible expenses			(1.50%)	(5.00%)
Tax credits			$ (4,000)	$ (40,000)
Tax credits			0.10%	2.60%
Liability for uncertain tax positions				$ 14,000
Liability for uncertain tax positions				(0.90%)
Other			$ 41,000	$ (8,000)
Other			(0.90%)	0.50%
Income Tax Expense (Benefit), Total	$ 62,000	$ 0	$ 2,000	$ 2,000
Effective Income Tax Rate Reconciliation, Percent, Total	0.00%	0.00%		(0.20%)

Note 14 - Income Taxes - Liabil

Note 14 - Income Taxes - Liability for Uncertain Tax Positions (Details) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 25, 2017
Balance as of beginning of year	$ 120,000	$ 106,000
Additions based on current year tax positions	2,000	14,000
(Reductions) additions for prior year tax positions
Balance as of end of year	$ 122,000	$ 120,000

Note 15 - Share-based Compens_3

Note 15 - Share-based Compensation and Employee Benefit Plans (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent			100.00%
Defined Contribution Plan, Vesting Period			4 years
Defined Contribution Plan, Employer Discretionary Contribution Amount			$ 27,000	$ 33,000
Employee Stock Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years		4 years
Employee Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years		5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years		10 years
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0		0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0	586,950	44,500
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 61,000		$ 97,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	317 days		324 days
Allocated Share-based Compensation Expense, Total	$ 37,000	$ 9,000	$ 107,000	$ 29,000
2000 Stock Option Plan and 2005 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,850,000		2,850,000
Percent Of Fair Market Value Of Common Stock At Date Of Grant	100.00%		100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	437,677		456,677
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 0.93	$ 0.83
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total	$ 205,000		$ 215,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 259 days		3 years 328 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	7,200	26,500	143,900	272,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 9,052	$ 33,000	$ 163,000	$ 315,000
Proceeds from Stock Options Exercised	0	0	0
Allocated Share-based Compensation Expense, Total	$ 20,000	$ 37,000	$ 251,000	$ 257,000

Note 15 - Share-based Compens_4

Note 15 - Share-based Compensation and Employee Benefit Plans - Weighted Average Assumptions (Details)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Dividend yield
Expected volatility	92.55%		91.00%	99.00%
Risk-free interest rate	2.82%		2.40%	1.45%
Expected term (Year)	8 years 131 days		8 years 127 days	8 years 131 days

Note 15 - Share-based Compens_5

Note 15 - Share-based Compensation and Employee Benefit Plans - Changes in Stock Options Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Mar. 25, 2017	Mar. 26, 2016
Outstanding, Shares (in shares)	1,478,700	1,104,500	1,592,200
Outstanding, weighted average exercise price (in dollars per share)	$ 0.56	$ 1.41	$ 1.52
Outstanding, Weighted average remaining contractual terms (Year)	7 years 292 days	8 years	6 years 36 days	6 years 292 days
Outstanding			$ 3	$ 69
Granted, Shares (in shares)	50,000	856,000	148,000
Granted, weighted average exercise price (in dollars per share)	$ 0.27	$ 0.34	$ 0.97
Granted, Weighted average remaining contractual terms (Year)	10 years	10 years
Exercised, Shares (in shares)
Exercised, weighted average exercise price (in dollars per share)
Exercised, Weighted average remaining contractual terms (Year)
Forfeited / Expired, Shares (in shares)	(31,000)	(481,800)	(635,700)
Forfeited / Expired, weighted average exercise price (in dollars per share)	$ 1.41	$ 1.34	$ 1.57
Outstanding, Shares (in shares)	1,497,700	1,478,700	1,104,500	1,592,200
Outstanding, weighted average exercise price (in dollars per share)	$ 0.53	$ 0.56	$ 1.41	$ 1.52
Exercisable, Shares (in shares)	500,650	524,450
Exercisable, weighted average exercise price (in dollars per share)	$ 0.79	$ 0.81
Exercisable, Weighted average remaining contractual terms (Year)	4 years 146 days	4 years 292 days
Exercisable
Expected to vest in the future, Shares (in shares)	702,491	671,805
Expected to vest in the future, weighted average exercise price (in dollars per share)	$ 0.40	$ 0.42
Expected to vest in the future, Weighted average remaining contractual terms (Year)	9 years 219 days	9 years 292 days
Expected to vest in the future

Note 15 - Share-based Compens_6

Note 15 - Share-based Compensation and Employee Benefit Plans - Changes in Nonvested Restricted Stock Awards Outstanding (Details) - Restricted Stock [Member] - $ / shares	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Non-Vested at March 25, 2017 (in shares)	299,950	0	0	0
Non-Vested at March 25, 2017 (in dollars per share)	$ 0.65	$ 0	$ 0	$ 0
Granted, Shares (in shares)	0	0	586,950	44,500
Granted, Weighted average fair value (in dollars per share)			$ 0.66	$ 0.66
Vested, Shares (in shares)	(37,500)		(51,000)	(44,500)
Vested, Weighted average fair value (in dollars per share)	$ 0.39		$ 0.60	$ 0.66
Forfeited or cancelled (in shares)			(236,000)	0
Forfeited or cancelled (in dollars per share)			$ 0.68	$ 0
Vested, Weighted average fair value (in dollars per share)	$ (0.39)		(0.60)	(0.66)
Forfeited or cancelled, Weighted average fair value (in dollars per share)			$ (0.68)	$ 0
Non-Vested at March 31, 2018 (in shares)	262,450		299,950	0
Non-Vested at March 31, 2018 (in dollars per share)	$ 0.68		$ 0.65	$ 0

Note 16 - Commitments and Con_3

Note 16 - Commitments and Contingencies (Details Textual)	12 Months Ended
	Mar. 31, 2018USD ($)	Mar. 25, 2017USD ($)ft²	Jan. 05, 2017ft²
Operating Leases, Rent Expense, Net, Total	$ 460,000	$ 523,000
Capital Leases, Balance Sheet, Assets by Major Class, Net, Total	249,000	249,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	174,000	$ 113,000
Long-term Purchase Commitment, Amount	$ 1,260,000
San Ramon, CA [Member]
Area of Real Estate Property | ft²		47,300
Dublin, CA [Member] | Commercial Building Lease [Member]
Area of Real Estate Property | ft²			23,873
Lessee, Operating Lease, Term of Contract			6 years 150 days

Note 16 - Commitments and Con_4

Note 16 - Commitments and Contingencies - Future Minimum Lease Payments Under Operating Leases (Details) $ in Thousands	Mar. 31, 2018USD ($)
2,019	$ 436
2,020	450
2,021	464
2,022	472
Thereafter	696
Total	$ 2,518

Note 16 - Commitments and Con_5

Note 16 - Commitments and Contingencies - Future Minimum Lease Payments Under Capital Leases (Details) $ in Thousands	Mar. 31, 2018USD ($)
2,019	$ 64
2,020	45
2,021	23
Total	132
Principal [Member]
2,019	52
2,020	40
2,021	22
Total	114
Interest [Member]
2,019	12
2,020	5
2,021	1
Total	$ 18

Note 17 - Warranty Obligation_2

Note 17 - Warranty Obligations - Reconciliation of Company's Estimated Warranty Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 24, 2017	Mar. 31, 2018	Mar. 25, 2017
Balance at beginning of period	$ 164	$ 123	$ 123	$ 60
Provision, net	6	1	291	234
Warranty costs incurred	(29)	(33)	(250)	(171)
Balance at end of period	$ 141	$ 91	$ 164	$ 123

Note 18 - Private Placement O_2

Note 18 - Private Placement Offering (Details Textual) $ / shares in Units, $ in Millions	Jan. 19, 2016USD ($)$ / sharesshares
Securities Purchase Agreement, Units Issued | shares	2,787,872
Number of Common Stock Per Unit | shares	1
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares	0.75
Number of Private Investors	20
Securities Purchase Agreement, Purchase Price	$ 1.24375
Securities Purchase Agreement, Gross Proceeds | $	$ 3.5
Securities Purchase Agreement, Net Proceeds | $	$ 3.1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.15
Warrant Term	5 years
Emerging Growth Equities, Ltd [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.15
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	292,727
Common Stock [Member]
Securities Purchase Agreement, Purchase Price	$ 1.15
Warrant [Member]
Securities Purchase Agreement, Purchase Price	0.09375
Securities Purchase Agreement, Price of One Common Share	$ 0.125

Note 19 - Preferred Stock and_3

Note 19 - Preferred Stock and Warrants (Details Textual)	Mar. 26, 2018USD ($)$ / sharesshares	Apr. 27, 2017shares	Jan. 19, 2016$ / sharesshares	May 14, 2015shares	Feb. 23, 2015USD ($)$ / sharesshares	Feb. 23, 2015USD ($)$ / sharesshares	Jul. 08, 2013USD ($)$ / sharesshares	Feb. 19, 2013USD ($)$ / sharesshares	Nov. 10, 2011USD ($)$ / sharesshares	Jun. 30, 2018USD ($)$ / sharesshares	Jun. 24, 2017USD ($)	Mar. 31, 2018USD ($)$ / sharesshares		Mar. 25, 2017USD ($)shares	Mar. 25, 2018$ / shares	Feb. 16, 2015$ / sharesshares
Payments of Stock Issuance Costs												$ 102,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 1.15
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares			0.75
Beneficial Conversion Feature Upon Issuance of Preferred Shares
Fair Value of Warrants Issued as Issuance Costs for Preferred Stock												54,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs												$ 102,000
Proceeds from Warrant Exercises										$ 15,000
Warrant Term			5 years
Alara Capital AVI II, LLC [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares							1,017,405
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares							$ 1.43
Class of Warrant Or Right Exercised in Period				14,587
Shares Issued Upon Cashless Warrant Exercise | shares				7,216
PFG Loan [Member]
Stock Issued During Period, Shares, New Issues | shares		190,000
Debt Instrument, Amount of Indebtedness Restructured	$ 1,700,000
Series E Preferred Stock Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Percentage of Common Shares Into Which the Preferred Shares Can Be Converted	5.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares	223,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.25
The 2016 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares			2,787,872
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.25		$ 1.15
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares			0.75
Class of Warrant or Right, Exercise Price of Warrants or Rights, Alternative Price for Certain Investors | $ / shares			$ 0.25
Class of Warrant or Right, Exercise Price Reduction, Number | shares	1,759,268
Placement Agent Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.25														$ 1.15
Class of Warrant or Right, Exercise Price Reduction, Number | shares	292,727
New Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares							511,186
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares							$ 1.43
Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues | shares	43,800									8,800
Preferred Stock, Dividend Rate, Percentage	6.00%
Issuance of Stock, Number of Investors	15
Shares Issued, Price Per Share | $ / shares	$ 25									$ 25
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 1,095,000
Proceeds from Issuance of Preferred Stock and Preference Stock, Net of Issuance Costs	$ 1,000,000
Stock Issued During Period, Placement Agent Fees, Percentage of Gross Proceeds	5.00%
Payments of Stock Issuance Costs	$ 57,000
Convertible Preferred Stock, Conversion Price Per Share | $ / shares	$ 0.25
Convertible Preferred Stock, Shares Issued upon Conversion | shares	100
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted | shares	4,380,000											4,380,000
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted, Percentage of Pro Forma Common Stock	31.00%											31.00%
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted, Percentage of Pro Forma Common Stock If All Classes of Convertible Preferred Stock Were Converted	27.00%											27.00%
Convertible Preferred Stock, Common Shares That Would Be Issued If All Preferred Shares Were Converted, Percentage of Pro Forma Common Stock If All Convertible Preferred Stock Were Converted and All Warrants Exercised	22.00%											22.00%
Preferred Stock, Redemption Price Percentage	300.00%											300.00%
Preferred Stock, Redemption Price Per Share | $ / shares	$ 75											$ 75
Preferred Stock, Liquidation Preference, Percentage	150.00%
Preferred Stock, Liquidation Preference Per Share | $ / shares	$ 37.50
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Shares | shares	22,300
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Percentage	50.00%
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Closing Price | $ / shares	$ 0.75
Convertible Preferred Stock, Termination of Right to Approve Parity Securities, Threshold Trading Volume | shares	100,000
Preferred Stock, Investor Rights Agreement, Period During Which Payment-in-kind Dividends May Potentially Be Received	2 years
Preferred Stock, Investor Rights Agreement, Ability to Issue Additional Debt Other Than Trade Debt and Commercial Bank Working Capital Debt, Required Percentage of Approval By Holders	66.60%
Issuance of Preferred Stock, Amount Deducted from Gross Proceeds Attributable to the Re-pricing of Warrants	$ 203,000
Beneficial Conversion Feature Upon Issuance of Preferred Shares	557,000
Fair Value of Warrants Issued as Issuance Costs for Preferred Stock	53,000
Preferred Stock, Shares Issued, Total | shares										53,400		43,800	[1]
Preferred Stock, Value, Issued, Ending Balance										$ 907,000		$ 702,000	[2]	$ 0
Proceeds from Issuance of Convertible Preferred Stock	1,095,000									$ 220,000
Series E Preferred Stock [Member] | The 2016 Warrants [Member]
Class of Warrant or Right, Alternative Exercise Price, Criteria, Amount of Preferred Stock Purchased	$ 200,000
Class of Warrant or Right, Alternative Exercise Price, Criteria, Percentage of Preferred Stock Purchased	50.00%
Series B Preferred Stock [Member]
Proceeds from Issuance of Preferred Stock, Preference Stock, and Warrants, Total									$ 2,199,000
Preferred Stock, Shares Issued, Total | shares									9,997			9,997		9,997
Sale of Stock, Price Per Share | $ / shares									$ 220
Preferred Stock, Value, Issued, Ending Balance												$ 2,000,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs												$ 202,000
Series C Preferred Stock [Member]
Proceeds from Issuance of Preferred Stock and Preference Stock								$ 500,000
Preferred Stock, Shares Issued, Total | shares								3,424.65				3,424.65		3,424.65
Sale of Stock, Price Per Share | $ / shares								$ 146
Preferred Stock, Value, Issued, Ending Balance								$ 457,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs								$ 43,000
Series D Preferred Stock [Member]
Preferred Stock, Shares Issued, Total | shares							5,111.86					5,111.86		5,111.86
Proceeds from Issuance of Convertible Preferred Stock							$ 858,000
Series D Preferred Stock [Member] | SPA [Member]
Payments of Stock Issuance Costs							41,000
Debt Instrument, Convertible, Beneficial Conversion Feature							238,000
Series D Preferred Stock [Member] | SPA [Member] | Unallocated [Member]
Proceeds from Issuance of Convertible Preferred Stock							817,000
Series D Preferred Stock [Member] | SPA [Member] | Allocated [Member]
Proceeds from Issuance of Convertible Preferred Stock							498,000
Proceeds from Issuance of Common Stock							$ 360,000
Debt Instrument, Convertible, Conversion Price | $ / shares							$ 0.97
Series B, C, and D Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion | shares												100
Preferred Stock, Shares Issued, Total | shares										18,533.51		18,533.51	[1]	18,533.51
Preferred Stock, Value, Issued, Ending Balance										$ 2,911,000		$ 2,911,000	[2]	$ 2,911,000
Series C and D Warrants [Member] | Alara Capital AVI II, LLC [Member]
Payments of Stock Issuance Costs						$ 42,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares					1,002,818	1,002,818
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares					$ 1.43	$ 1.43
Proceeds from Warrant Exercises						$ 1,434,000
New Warrant [Member] | Alara Capital AVI II, LLC [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares					194,437	194,437										898,634
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares					$ 1.76	$ 1.76										$ 1.78
Number of Warrants Sold | shares					2	2
Warrant Purchase Price					$ 137,000
Warrant Purchase Price Per Share | $ / shares					$ 0.125
Warrant Term						5 years
Additional Warrant [Member] | Alara Capital AVI II, LLC [Member]
Class of Warrant or Right, Outstanding | shares					14,587	14,587
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.
[2]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 19 - Preferred Stock and_4

Note 19 - Preferred Stock and Warrants - Preferred Stock Information (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018		Mar. 25, 2017	Jul. 08, 2013	Feb. 19, 2013	Nov. 10, 2011
Designated shares (in shares)	1,000,000	1,000,000	[1]	1,000,000
Series B Preferred Stock [Member]
Designated shares (in shares)		10,000		10,000
Preferred Stock, Shares Issued, Total		9,997		9,997			9,997
Shares outstanding (in shares)		9,997		9,997
Liquidation preference		$ 2,309		$ 2,309
Series C Preferred Stock [Member]
Designated shares (in shares)		3,500		3,500
Preferred Stock, Shares Issued, Total		3,424.65		3,424.65		3,424.65
Shares outstanding (in shares)		3,424.65		3,424.65
Liquidation preference		$ 500		$ 500
Series D Preferred Stock [Member]
Designated shares (in shares)		6,000		6,000
Preferred Stock, Shares Issued, Total		5,111.86		5,111.86	5,111.86
Shares outstanding (in shares)		5,111.86		5,111.86
Liquidation preference		$ 731		$ 731
Series B, C, and D Preferred Stock [Member]
Designated shares (in shares)	19,500	19,500	[1]	19,500
Preferred Stock, Shares Issued, Total	18,533.51	18,533.51	[1]	18,533.51
Shares outstanding (in shares)	18,533.51	18,533.51	[1]	18,533.51
Liquidation preference	$ 3,540	$ 3,540	[1]	$ 3,540
Series E Preferred Stock [Member]
Designated shares (in shares)	60,000	60,000	[1]
Preferred Stock, Shares Issued, Total	53,400	43,800	[1]
Shares outstanding (in shares)	53,400	43,800	[1]
Liquidation preference	$ 2,003	$ 1,643	[1]
Series B, C, D, and E Preferred Stock [Member]
Designated shares (in shares)	79,500	79,500
Preferred Stock, Shares Issued, Total	71,933.51	62,333.51
Shares outstanding (in shares)	71,933.51	62,333.51
Liquidation preference	$ 5,413	$ 5,183
[1]	Derived from the audited consolidated financial statements as of and for the fiscal year ended March 31, 2018.

Note 20 - Subsequent Events (De

Note 20 - Subsequent Events (Details Textual) - Series E Preferred Stock [Member] - USD ($)	Aug. 13, 2018	Mar. 26, 2018	May 31, 2018	Apr. 30, 2018	Jun. 30, 2018
Stock Issued During Period, Shares, New Issues		43,800			8,800
Shares Issued, Price Per Share		$ 25			$ 25
Proceeds from Issuance of Convertible Preferred Stock		$ 1,095,000			$ 220,000
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues	1,400		2,400	6,000
Shares Issued, Price Per Share	$ 25		$ 25	$ 25
Proceeds from Issuance of Convertible Preferred Stock	$ 35,000		$ 60,000	$ 150,000