Cyanotech (CYAN) 10-K/A 21 Jun 18 2018 FY Annual report (amended) Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Mar. 31, 2018	Jun. 15, 2018	Sep. 30, 2017
Document Information [Line Items]
Entity Registrant Name	Cyanotech Corp
Entity Central Index Key	768,408
Trading Symbol	cyan
Current Fiscal Year End Date	--03-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		5,772,032
Entity Public Float			$ 18,602,266
Document Type	10-K/A
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	This Amendment No. 1 on Form 10-K/A (this “Amendment”) amends our Annual Report on Form 10-K for the fiscal year ended March 31, 2018, originally filed with the Securities and Exchange Commission on June 15, 2018 (the “Original Filing”). We are filing this Amendment to amend and restate Part II, Item 8 of the Original Filing to correct typographical errors in the REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM. The dates referenced in the Original filing's REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - Opinion on the financial statements - as December 31, 2018 have been amended to show March 31, 2018. In addition, as required by Rule 12b-5 under the Securities Exchange Act of 1934, as amended, new certifications by our principle executive officer and our principle financial officer are filed as exhibits to this amendment. Except as described above, no other changes have been made to the Original Filing. The Original Filing continues to speak as of the date of the Original Filing, and we have not updated the disclosures contained therein to reflect any events which occurred at a date subsequent to the filing of the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing and the Company’s other filings with the SEC subsequent to the Original Filing.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Current assets:
Cash	$ 1,329	$ 1,407
Accounts receivable, net of allowance for doubtful accounts of $27 in 2018 and $49 in 2017	2,664	2,135
Inventories, net	9,034	7,972
Deferred tax assets		157
Prepaid expenses and other current assets	590	565
Total current assets	13,617	12,236
Equipment and leasehold improvements, net	15,734	16,712
Restricted cash	65
Other assets	291	213
Total assets	29,707	29,161
Current liabilities:
Line of credit	500	611
Current maturities of long-term debt	655	623
Customer deposits	133	119
Accounts payable	3,527	3,666
Accrued expenses	892	1,013
Total current liabilities	5,707	6,032
Long-term debt, less current maturities	5,790	6,249
Deferred tax liabilities		157
Other long term liabilities	103	116
Total liabilities	11,600	12,554
Commitments and contingencies
Stockholders’ equity:
Preferred stock of $0.01 par value, authorized 10,000,000 shares; no shares issued and outstanding
Common stock of $0.02 par value, authorized 50,000,000 shares; issued and outstanding 5,772,032 shares at March 31, 2018 and 5,685,381 shares at March 31, 2017	115	114
Additional paid-in capital	32,051	31,577
Accumulated deficit	(14,059)	(15,084)
Total stockholders’ equity	18,107	16,607
Total liabilities and stockholders’ equity	$ 29,707	$ 29,161

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Accounts receivable, allowance for doubtful accounts	$ 27	$ 49
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred, authorized shares (in shares)	10,000,000	10,000,000
Preferred, issued shares (in shares)	0	0
Preferred outstanding, shares (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.02	$ 0.02
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	5,772,032	5,685,381
Common stock, shares outstanding (in shares)	5,772,032	5,685,381

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net sales	$ 34,115	$ 32,042	$ 31,840
Cost of sales	20,744	19,818	19,974
Gross profit	13,371	12,224	11,866
Operating expenses:
General and administrative	4,956	6,054	5,796
Sales and marketing	6,438	6,259	6,222
Research and development	563	593	633
Total operating expense	11,957	12,906	12,651
Income (loss) from operations	1,414	(682)	(785)
Other expense:
Interest expense, net	(499)	(528)	(282)
Total other expense, net	(499)	(528)	(282)
Income (loss) before income taxes	915	(1,210)	(1,067)
Income tax benefit (expense)	110	(5)	(3,328)
Net income (loss)	$ 1,025	$ (1,215)	$ (4,395)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.18	$ (0.21)	$ (0.79)
Diluted (in dollars per share)	$ 0.18	$ (0.21)	$ (0.79)
Shares used in calculation of net income (loss) per share:
Basic (in shares)	5,709	5,658	5,581
Diluted (in shares)	5,781	5,658	5,581

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 31, 2015	5,564,799
Balance at Mar. 31, 2015	$ 111	$ 30,846	$ (9,474)	$ 21,483
Issuances of common stock for Director Stock Grants (in shares)	13,198
Issuances of common stock for Director Stock Grants		78		$ 78
Issuance of common stock for exercise of stock options for cash (in shares)	21,800			21,800
Issuance of common stock for exercise of stock options for cash	$ 1	74		$ 75
Compensation expense related to stock options		587		587
Net income (loss)			(4,395)	(4,395)
Balance (in shares) at Mar. 31, 2016	5,599,797
Balance at Mar. 31, 2016	$ 112	31,585	(13,869)	17,828
Issuances of common stock for Director Stock Grants (in shares)	19,117
Issuances of common stock for Director Stock Grants		78		$ 78
Issuance of common stock for exercise of stock options for cash (in shares)	18,000			18,000
Issuance of common stock for exercise of stock options for cash	$ 1	50		$ 51
Compensation expense related to stock options	1	151		152
Net income (loss)			(1,215)	(1,215)
Issuance of common stock in connection with severance of former executive (in shares)	77,500
Issuance of common stock in connection with severance of former executive	$ 1	(1)
Shares withheld from former executive for tax payments (in shares)	(29,033)
Shares withheld from former executive for tax payments	$ (1)	(146)		(147)
Settlement agreement with former executive		(140)		(140)
Balance (in shares) at Mar. 31, 2017	5,685,381
Balance at Mar. 31, 2017	$ 114	31,577	(15,084)	16,607
Issuances of common stock for Director Stock Grants (in shares)	57,501
Issuances of common stock for Director Stock Grants	$ 1	275		$ 276
Issuance of common stock for exercise of stock options for cash (in shares)	29,150			29,150
Issuance of common stock for exercise of stock options for cash		75		$ 75
Compensation expense related to stock options		124		124
Net income (loss)			1,025	1,025
Compensation expense related to stock options (in shares)
Balance (in shares) at Mar. 31, 2018	5,772,032
Balance at Mar. 31, 2018	$ 115	$ 32,051	$ (14,059)	$ 18,107

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 1,025,000	$ (1,215,000)	$ (4,395,000)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Loss on sale or disposal of assets	106,000	63,000	11,000
Depreciation and amortization	1,877,000	1,978,000	1,520,000
Amortization of debt issue costs and other assets	72,000	67,000	57,000
Share based compensation expense	400,000	232,000	665,000
Provision for doubtful accounts			130,000
Deferred income tax expense			3,350,000
Net (increase) decrease in assets:
Accounts receivable	(529,000)	848,000	145,000
Inventories	(1,062,000)	(116,000)	(2,149,000)
Prepaid expenses and other assets	(139,000)	27,000	(39,000)
Net increase (decrease) in liabilities:
Customer deposits	13,000	2,000	86,000
Accounts payable	(139,000)	(334,000)	1,036,000
Accrued expenses	(121,000)	(417,000)	306,000
Deferred rent and other liabilities	(13,000)	85,000	22,000
Net cash provided by operating activities	1,490,000	1,220,000	745,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in equipment and leasehold improvements	(1,005,000)	(847,000)	(4,303,000)
Investment in restricted cash	(65,000)		486,000
Net cash used in investing activities	(1,070,000)	(847,000)	(3,817,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from short term notes payable		600,000	500,000
Net (payments) draws on line of credit	(111,000)	611,000
Payment of short term notes payable		(600,000)	(500,000)
Proceeds from long-term debt, net of costs	166,000		2,407,000
Payments on capitalized leases	(90,000)	(77,000)	(44,000)
Principal payments on long-term debt	(538,000)	(504,000)	(352,000)
Shares withheld from former executive for tax payments		(147,000)
Settlement agreement with former executive		(140,000)
Proceeds from issuance of common stock and exercise of stock options	75,000	51,000	75,000
Net cash (used in) provided by financing activities	(498,000)	(206,000)	2,086,000
Net increase (decrease) in cash	(78,000)	167,000	(986,000)
Cash at beginning of year	1,407,000	1,240,000	2,226,000
Cash at end of year	1,329,000	1,407,000	1,240,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest	413,000	431,000	362,000
Income taxes			$ 47,000

Note 1 - Description of Busines

Note 1 - Description of Business and Summary of Accounting Policies	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	Note 1 Description of Business Cyanotech Corporation (the “Company”) cultivates and produces high-value, high-quality natural products derived from microalgae for the nutritional supplements market. The Company currently cultivates, on a large-scale basis, two two one Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. The accompanying consolidated financial statements include the accounts of Cyanotech Corporation and its wholly owned subsidiary, Nutrex Hawaii, Inc. (“Nutrex Hawaii” or “Nutrex”). All significant intercompany balances and transactions have been eliminated in consolidation. Liquidity As of March 31, 2018, $1.3 $7.9 $1.4 $6.2 March 31, 2017. August 30, 2016, June 3, 2016, $2.0 March 31, 2018, $0.5 $1.5 May 29, 2018, $0.5 $1.0 August 30, 2017 August 30, 2018, As of March 31, 2018, $6.4 August 2032. March 31, 2018. March 31, 2017, 1.92:1, 2.10:1. March 31, 2017, not Funds generated by operating activities and available cash continue to be the Company's most significant sources of liquidity for working capital requirements, debt service and funding of maintenance levels of capital expenditures. Based upon the Company's fiscal 2019 March 31, 2019, twelve March 31, 2019. no March 31, 2019. Estimates and Assumptions The preparation of the consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of any contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the period reported. Management reviews these estimates and assumptions periodically and reflects the effect of revisions in the period that they are determined to be necessary. Actual results could differ significantly from those estimates and assumptions. Significant estimates include forecast of future operating results, cash flows and financial position, inventory valuation and determination of production capacity and abnormal product costs, reserve for inventory, sales allowances, allowance for doubtful accounts and valuation of deferred tax assets. Financial Instruments Cash primarily consists of cash on hand and cash in bank deposits. The Company applies a framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1 3 three Level 1 Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access. Level 2 Inputs to the valuation methodology include: ● Quoted prices for similar assets or liabilities in active markets; ● Quoted prices for identical or similar assets or liabilities in inactive markets; ● Inputs other than quoted prices that are observable for the asset or liability; and ● Inputs that are derived principally from or corroborated by observable market data by correlation or other means. If the asset or liability has a specified (contractual) term, the Level 2 Level 3 Inputs to the valuation methodology are unobservable and significant to the fair value. Cash, Accounts Receivable, Accounts Payable and Accrued Expenses Line of Credit and Long-Term Debt Concentration of Credit Risk The Company maintains its cash accounts with several banks located in Hawaii. The total cash balances are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000 March 31, 2018 $829,000. 32% 16%, March 31, 2018. 77% March 31, 2018. 24% March 31, 2017. 60% March 31, 2017. 19% 11%, March 31, 2016. 44% March 31, 2016. ten 70%, 60% 58% 2018, 2017 2016, Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at the invoiced amount and do not not 90 not Inventories, net Inventories are stated at the lower of cost or net realizable value. Cost is determined using the first first third Management provides a reserve against inventory for known or expected inventory obsolescence. The reserve is determined by specific review of inventory items for product age and quality which may March 31, 2018 2017, $5,000 $3,000, The Company recognizes abnormal production costs, including fixed cost variances from normal production capacity, as an expense in the period incurred. Abnormal amounts of freight, handling costs and wasted material (spoilage) are recognized as current period charges and fixed production overhead costs are allocated to inventory based on the normal capacity of production facilities. Normal capacity is defined as “the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance.” The Company expensed abnormal production costs of $538,000, $120,000 $395,000 March 31, 2018, 2017 2016, $271,000, $134,000 $149,000 March 31, 2018, 2017 2016, Equipment and Leasehold Improvements, net Equipment and leasehold improvements are stated at cost. Depreciation and amortization are provided using the straight-line method over the estimated useful lives for equipment and furniture and fixtures, and the shorter of the land lease term (see Notes 3 6 Equipment (in years) 3 to 10 Furniture and fixtures (in years) 3 to 7 Leasehold improvements (in years) 10 to 25 Capital project costs are accumulated in construction-in-progress until completed, at which time the costs are transferred to the relevant asset and commence depreciation. Repairs and Maintenance costs are expensed in the period incurred. Repairs and maintenance that significantly increase the useful life or value of the asset are capitalized and depreciated over the remaining life of the asset. The Company capitalizes interest cost incurred on funds used to construct property, plant, and equipment. The capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life. Impairment of Long-Lived Assets Management reviews long-lived assets, such as equipment, leasehold improvements and purchased intangibles subject to amortization for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not not Accounting for Asset Retirement Obligations Management evaluates quarterly the potential liability for asset retirement obligations under the Company’s lease for its principal facility and corporate headquarters. No March 31, 2018 2017 7 Revenue Recognition We recognize revenues when the customer takes ownership and assumes the risk of loss. We have determined that transfer of title and risk of loss generally occurs when product is received by the customer, except in instances where the shipment terms are explicitly FOB Origin, and accordingly we recognize revenue at the point of delivery to the customer. For shipments with terms of FOB Origin where transfer of title and risk of loss occurs at the point of shipping, revenue is recognized upon shipment to the customer. Sales returns and allowances are estimated and recorded as a reduction to sales in the period in which sales are recorded. We record net shipping charges and sales tax in cost of goods sold. Research and Development Research and development costs are expensed as incurred and consist primarily of labor, benefits and outside research. Advertising Advertising costs are expensed as incurred. Total advertising expense for the years ended March 31, 2018, 2017 2016 $1,548,000, $813,000 $942,000, Income Taxes Income taxes are accounted for under the asset and liability method. The asset and liability method requires the recognition of deferred tax assets and liabilities for the expected future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using income tax rates applicable to the period in which the tax difference is expected to reverse. Judgment is required in determining any valuation allowance recorded against deferred tax assets, specifically net operating loss carryforwards, tax credit carryforwards and deductible temporary differences that may In evaluating a tax position for recognition, management evaluates whether it is more-likely-than- not not 50% March 31, 2018 2017, no The Company recognizes accrued interest related to unrecognized tax benefits as well as any related penalties in interest expense in its condensed consolidated statements of operations. As of the date of adoption and during the years ended March 31, 2018, 2017 2016, no Share-Based Compensation The Company accounts for share-based payment arrangements using fair value. The Company currently has no not The Company utilizes the Black-Scholes option pricing model to determine the fair value of each option award. Expected volatilities are based on the historical volatility of the Company’s common stock over a period consistent with that of the expected term of the options. The expected term of the options are estimated based on factors such as vesting periods, contractual expiration dates and historical exercise behavior. The risk-free rates for periods within the contractual life of the options are based on the yields of U.S. Treasury instruments with terms comparable to the estimated option terms. Per Share Amounts Basic earnings (loss) per common share is calculated by dividing net income (loss) for the year by the weighted average number of common shares outstanding during the year. Diluted earnings per common share is calculated by dividing net income for the year by the sum of the weighted average number of common shares outstanding during the year plus the number of potentially dilutive common shares (“dilutive securities”) that were outstanding during the year. Dilutive securities include restricted stock units and stock options granted pursuant to the Company’s stock option plans. Dilutive securities related to the Company’s stock option plans are included in the calculation of diluted earnings per common share using the treasury stock method. Potentially dilutive securities are excluded from the computation of earnings per share in periods in which a net loss is reported, as their effect would be antidilutive. A reconciliation of the numerators and denominators of the basic and diluted income (loss) per common share calculations for the years ended March 31, 2018, 2017 2016 11. New Accounting Pronouncements In May 2017, 2017 09, Compensation-Stock Compensation (Topic 718 ) Scope of Modification Accounting. 2017 09 718, December 15, 2017 not In November 2016, 2016 18, Statement of Cash Flows (Topic 230 ): Restricted Cash” No. 2016 18” . 230, 2016 18 December 15, 2017, April 1, 2018. not In August 2016, 2016 15, Statement of Cash Flows (Topic 230 ) Classification of Certain Cash Receipts and Cash Payments” No. 2016 15” eight not No. 2016 15 December 15, 2017, April 1, 2018. not In March 2016, 2016 09, Compensation – Stock Compensation (Topic 718 ) Improvements to Employee Share-Based Payment Accounting” (“ No. 2016 09 ”) 718 No. 2016 09 December 15, 2016, may April 1, 2017, 2016 09 2016 09 not In February 2016, 2016 02, Leases (Topic 842 )” (“ No. 2016 02” No. 2016 02 No. 2016 02 twelve No. 2016 02 December 15, 2018. No. 2016 02 April 1, 2019. not In November 2015, No. 2015 17, Income Taxes (Topic 740 ): Balance Sheet Classification of Deferred Taxes” 2015 17 December 15, 2016, April 1, 2017 In July 2015, No. 2015 11, “Inventory: Simplifying the Measurement of Inventory” not first December 15, 2016, April 1, 2017. not In May 2014, No. 2014 09, Revenue from Contracts with Customers (Topic 606 December 2016 2016 20. August 2015, No 2015 14 Revenue from Contracts with Customers (Topic 606 Deferral of the Effective Date, 2014 09 December 15, 2017, not The Company adopted ASC 606 April 1, 2018. 606 April 1, 2018 not

Note 2 - Inventories, Net

Note 2 - Inventories, Net	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Inventory Disclosure [Text Block]	Note 2 Inventories consist of the following as of March 31, 2018 2017: 201 8 201 7 (in thousands) Raw materials $ 410 $ 347 Work in process 2,602 2,036 Finished goods(1) 5,878 5,460 Supplies 144 129 Inventories, net $ 9,034 $ 7,972 ( 1 Net of reserve for obsolescence of $5,000 $3,000 March 31, 2018 2017,

Note 3 - Equipment and Leasehol

Note 3 - Equipment and Leasehold Improvements, Net	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	Note 3 Equipment and leasehold improvements consists of the following as of March 31, 2018 2017: 201 8 201 7 (in thousands) Equipment(1) $ 17,935 $ 17,492 Leasehold improvements 14,248 13,892 Furniture and fixtures 348 380 32,531 31,764 Less accumulated depreciation and amortization (17,346 ) (15,835 ) Construction in-progress 549 783 Equipment and leasehold improvements, net $ 15,734 $ 16,712 ( 1 Includes $373,000 March 31, 2018 2017 $175,000 $106,000, The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of such assets may not No March 31, 2018, 2017 2016. $106,000, $63,000 $11,000 2018, 2017 2016 $1,877,000, $1,978,000 $1,520,000 March 31, 2018, 2017 2016, The Company capitalized interest in the amount of $0, $0 $173,000 March 31, 2018, 2017 2016,

Note 4 - Notes Payable

Note 4 - Notes Payable	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Short-term Debt [Text Block]	Note 4 Notes Payable On August 30, 2016, June 3, 2016, $2,000,000 4.75% March 31, 2018) + 2%, March 31, 2018, $500,000 $1,500,000 August 30, 2018. On May 29, 2018, $500,000 $1,000,000 The Credit Agreement grants the Bank the following security interests in the Company’s property: (a) a lien on the Company’s leasehold interest in its Kona facility; (b) an assignment of the Company’s interest in leases and rents on its Kona facility; and (c) a security interest in all fixtures, furnishings and equipment related to or used by the Company at the Kona facility. Each security interest is further subject to the terms of the Credit Agreement.

Note 5 - Accrued Expenses

Note 5 - Accrued Expenses	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	Note 5 Accrued Expenses Components of accrued expenses as of March 31, 2018 2017 201 8 201 7 (in thousands) Wages, commissions, bonus and profit sharing $ 707 $ 793 Rent and utilities 69 69 Other accrued expenses 116 151 Total accrued expenses $ 892 $ 1,013

Note 6 - Long-term Debt

Note 6 - Long-term Debt	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Long-term Debt [Text Block]	Note 6 Long-term debt consists of the following as of March 31, 2018 2017 201 8 201 7 (in thousands) Long-term debt $ 6,678 $ 7,139 Less current maturities (655 ) (623 ) Long-term debt, excluding current maturities 6,023 6,516 Less unamortized debt issuance costs (233 ) (267 ) Total long-term debt, net of current maturities and unamortized debt issuance costs $ 5,790 $ 6,249 Term Loans The Company executed a loan agreement with a lender providing for $2,500,000 “2015 July 30, 2015 “2015 2015 $2,500,000, 2015 $500,000 September 18, 2015, The provisions of the 2015 September 1, 2022, seven 7 2015 4.75% March 31, 2018 2.0% first no 6.00%. 2015 5% first 2015 1% fifth no 2015 $1,726,000 $2,049,000 March 31, 2018 2017, The 2015 one $113,900 0.50% December 31 December 31, 2015. 80% 2015 March 31, 2018. The Company executed a loan agreement with a lender providing for $5,500,000 August 14, 2012 $2,250,000 $3,250,000, The provisions of the Loan required the payment of interest only for the first 12 August 14, 2032, nineteen 19 4.75% March 31, 2018 1.0% first no 5.50%. $4,648,000 $4,854,000 March 31, 2018 2017, The Loan included a one $214,500 0.25% December 31 December 31, 2012. 80% March 31, 2018. On October 6, 2017, $175,000 4.75%. October 31, 2022, five 5 $156,000 March 31, 2018. $65,000 Capital Leases In August 2016, $52,000 May 2019 36 12.90%. $28,000 $43,000 March 31, 2018 2017, In February 2016, $51,000 March 2021 60 4.18%. $32,000 $42,000 March 31, 2018 March 31, 2017, In July 2015, $174,000 July 2020 60 6.57%. $88,000 $121,000 March 31, 2018 March 31, 2017, In March 2015, $86,000 March 2018 36 6.5%. $0 $30,000 March 31, 2018 2017, Future principal payments under the loan and capital lease agreements as of March 31, 2018 Year ending March 31 (in thousands) 2019 $ 655 2020 682 2021 690 2022 707 2023 513 Thereafter 3,431 Total principal payments $ 6,678

Note 7 - Leases

Note 7 - Leases	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Leases of Lessee Disclosure [Text Block]	Note 7 The Company’s principal facility and its corporate headquarters are located at the Natural Energy Laboratory of Hawaii Authority (“NELHA”) at Keahole Point in Kailua-Kona, Hawaii. The property is leased from the State of Hawaii under a 40 2035. not not The Company leases facilities, equipment and land under operating leases expiring through 2035. March 31, 2018, 2017 2016 $49,000, $80,000 $65,000, Future minimum lease payments under non-cancelable operating leases at March 31, 2018 Year ending March 31 (in thousands) 2019 $ 626 2020 636 2021 536 2022 535 2023 456 Thereafter 3,815 Total minimum lease payments $ 6,604 Rent expense, including contingent rent, under operating leases amounted to $578,000, $605,000 $622,000 March 31, 2018, 2017 2016,

Note 8 - Other Commitments and

Note 8 - Other Commitments and Contingencies	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 8 From time to time, the Company may no March 31, 2018. As of March 31, 2018, $449,000, not

Note 9 - Share-based Compensati

Note 9 - Share-based Compensation	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 9 As of March 31, 2018, two 2016 2016 2014 “2014 March 31, 2018, two 2005 “2005 2004 “2004 No 2005 2004 On August 25, 2016, 2016 2005 2016 1,300,000 600,000 March 31, 2018, 1,131,992 2016 On August 28, 2014, 2014 2014 350,000 March 31, 2018, 231,623 2014 The following table presents shares authorized, available for future grant and outstanding under each of the Company’s plans: As of March 31, 201 8 Authorized Available Outstanding 2016 Plan 1,300,000 1,131,992 159,675 2014 Directors Plan 350,000 231,623 12,000 2005 Plan — — 445,400 2004 Directors Plan — — 12,000 Total 1,650,000 1,363,615 629,075 Stock Options All stock option grants made under the equity-based compensation plans were issued at exercise prices no 2016 2005 2014 No ten 10 $62,000, $154,000 $587,000 March 31, 2018, 2017 2016, A summary of option activity under the Company’s stock plans for the years ended March 31, 2018, 2017 2016 Option Activity Shares Weighted Weighted Average (in years) Aggregate Outstanding at March 31, 2015 1,433,216 $ 4.08 6.4 $ 6,221,909 Granted 6,000 5.91 Exercised (21,800 ) 3.26 Forfeited (732,416 ) 3.59 Outstanding at March 31, 2016 685,000 $ 4.65 5.7 $ 566,323 Granted 6,000 4.08 Exercised (18,000 ) 2.77 Forfeited (170,000 ) 6.44 Outstanding at March 31, 2017 503,000 $ 4.10 4.7 $ 145,946 Granted 120,000 3.53 Exercised (29,150 ) 2.59 Forfeited (3,700 ) 4.50 Expired (750 ) 1.60 Outstanding at March 31, 2018 589,400 $ 4.06 4.9 $ 675,300 Exercisable at March 31, 2018 469,400 $ 4.20 3.8 $ 486,900 The aggregate intrinsic value in the table above is before applicable income taxes and represents the excess amount over the exercise price optionees would have received if all options had been exercised on the last business day of the period indicated, based on the Company’s closing stock price of $5.10, $3.85, $4.98 $8.42 March 31, 2018, 2017, 2016 2015 2018, 2017 2016 $67,000, $23,000 $58,000, A summary of the Company’s non-vested options for the year ended March 31, 2018 Nonvested Options Shares Weighted Nonvested at March 31, 2017 19,500 $ 2.93 Granted 120,000 1.81 Vested (19,500 ) 2.93 Nonvested at March 31, 2018 120,000 $ 1.81 The weighted average grant-date fair value of stock options granted during fiscal years 2018, 2017 2016 $67,000, $5,000 $7,000, 2018, 2017 2016 $57,000, $332,000 $651,000, The following table summarizes the weighted average characteristics of outstanding stock options as of March 31, 2018: Outstanding Options Exercisable Options Range of Exercise Prices Number Remaining Weighted Number of Weighted $1.60 - $3.70 172,200 5.3 $ 3.05 97,200 $ 2.81 $3.71 - $4.42 239,700 4.7 $ 3.83 194,700 $ 3.83 $4.43 - $5.40 95,000 5.2 $ 5.00 95,500 $ 5.00 $5.41 - $7.08 82,500 4.6 $ 5.77 82,500 $ 5.77 Total stock options 589,400 4.9 $ 4.06 469,400 $ 4.20 The range of fair value assumptions related to options granted during the years ended March 31, 2018, 2017 2016 201 8 201 7 201 6 Exercise Price $ 3.83 $ 4.08 $ 5.91 Volatility 51.91 % 51.13 % 50.00 % Risk Free Rate 2.50 % 0.60 % 0.22 % Vesting Period (in years) 3.0 0.5 0.5 Forfeiture Rate 0.00 % 0.00 % 0.00 % Expected Life (in years) 6.00 1.00 1.00 Dividend Rate 0 % 0 % 0 % As of March 31, 2018, $181,000, 2.3 Restricted Stock Grants of fully vested restricted stock issued to Non-Employee Directors was 57,501, 19,117 13,198 three March 31, 2018, 2017 2016, 2014 $276,000, $78,000 $78,000 three March 31, 2018, 2017 2016, Restricted Stock Units (“RSUs”) RSUs are service-based awards granted to eligible employees under our 2016 2016 $62,000, $0 $0 March 31, 2018, 2017 2016, The following table summarizes information related to awarded RSUs: Nonvested Restricted Stock Units Shares Weighted Nonvested restricted stock units at March 31, 2017 25,000 $ 3.85 Granted 28,074 $ 3.92 Vested (8,333 ) $ 3.85 Exercised — $ — Forfeited (5,066 ) $ 3.92 Nonvested restricted stock units at March 31, 2018 39,675 $ 3.89 As of March 31, 2018, $122,730. On April 5, 2018, 1,474 $5.25 two

Note 10 - Common and Preferred

Note 10 - Common and Preferred Stock	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 10 The Company has authorized a total of sixty million fifty million ten million None March 31, 2018 2017.

Note 11 - Earnings (Loss) Per S

Note 11 - Earnings (Loss) Per Share	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 11 Basic earnings (loss) per share is computed on the basis of the weighted average number of common shares outstanding. Diluted earnings per share is computed on the basis of the weighted average number of common shares outstanding plus the potentially dilutive effect of outstanding stock options using the treasury stock method. Reconciliations between the numerator and the denominator of the basic and diluted income (loss) per share computations for the years ended March 31, 2018, 2017 2016 Net Income (l oss ) (Numerator) Shares Per Share (in thousands, except per share amounts) Year ended March 31, 2018: Basic income per share $ 1,025 5,709 $ 0.18 Effective dilutive securities—Common stock options — 72 — Diluted income per share $ 1,025 5,781 $ 0.18 Year ended March 31, 2017: Basic and diluted loss per share $ (1,215 ) 5,658 $ (0.21 ) Year ended March 31, 2016: Basic and diluted loss per share $ (4,395 ) 5,581 $ (0.79 ) Basic and diluted per share amounts are the same in periods of a net loss, because common share equivalents are anti-dilutive when a net loss is recorded. Diluted earnings per share does not 120,000, 6,000 58,000 March 31, 2018, 2017 2016, not 39,675 25,000 March 31, 2018 2017,

Note 12 - Profit Sharing Plan a

Note 12 - Profit Sharing Plan and 401k Plan	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Profit Sharing Plan and 401 Plan Disclosure [Text Block]	Note 12 401k The Company sponsors a profit sharing plan for all employees not may may 401 may 401 $91,000, $4,000 $0 March 31, 2018, 2017 2016, 401 two $117,000, $139,000 $147,000 March 31, 2018, 2017 2016,

Note 13 - Product Line and Geog

Note 13 - Product Line and Geographic Information	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 13 Net sales by product line for the years 2018, 2017 2016 201 8 201 7 201 6 (in thousands) Net sales: Natural astaxanthin products BioAstin® $ 21,650 $ 19,357 $ 19,829 Spirulina products Spirulina Pacifica® 12,465 12,685 12,011 $ 34,115 $ 32,042 $ 31,840 Net sales by geographic region for the years 2018, 2017 2016 201 8 201 7 201 6 (dollars in thousands) Net sales(1): United States $ 26,348 77 % $ 22,978 72 % $ 22,711 71 % Asia / Pacific 3,238 9 % 4,017 13 % 4,130 13 % Europe 2,540 8 % 3,652 11 % 2,990 9 % Other 1,989 6 % 1,395 4 % 2,009 7 % $ 34,115 100 % $ 32,042 100 % $ 31,840 100 % ( 1 Net sales are attributed to countries based on location of customer.

Note 14 - Income Taxes

Note 14 - Income Taxes	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 14 Income tax benefit (expense) for the years ended March 31, 2018, 2017 2016 2018 2017 2016 (in thousands) Current: Federal $ 112 $ (2 ) $ (1 ) State (2 ) (3 ) 23 Total current benefit (expense) 110 (5 ) 22 Deferred: Federal — — (3,027 ) State — — (323 ) Total deferred expense — — (3,350 ) Income tax benefit (expense) $ 110 $ (5 ) $ (3,328 ) On December 22, 2017 1, 34% 21% January 1, 2018. March 31, 2018 30.79%. 21% March 31, 2019 On December 22, 2017, No. 118 118" not $1.2 no March 31, 2018 December 31, 2018 no The following table reconciles the amount of income taxes computed at the federal blended rate of 30.79% March 31, 2018 34% March 31, 2017 2016, March 31, 2018, 2017 2016: 2018 2017 2016 (in thousands) Tax provision at federal statutory income tax rate $ (282 ) $ 411 $ 363 Stock based compensation (11 ) (281 ) (128 ) Decrease (increase) in valuation allowance 1,565 (158 ) (3,564 ) State income taxes benefit (expense), net of federal income tax effect (36 ) 49 25 State rate adjustment 3 (1 ) 1 AMT Credit 112 — — Tax Cuts and Jobs Act (1,244 ) — — Other, net 3 (25 ) (25 ) Income tax benefit (expense) $ 110 $ (5 ) $ (3,328 ) The tax effects of temporary differences related to various assets, liabilities and carry forwards that give rise to deferred tax assets and deferred tax liabilities as of March 31, 2018 2017 2018 2017 (in thousands) Deferred tax assets: Net operating loss carry forwards $ 2,903 $ 4,325 Inventory 295 405 Compensation accrual 153 187 Tax credit carry forwards 36 147 Other 22 40 Gross deferred tax assets 3,409 5,104 Less valuation allowance (2,158 ) (3,722 ) Net deferred tax assets 1,251 1,382 Deferred tax liability- Depreciation and amortization (1,251 ) (1,382 ) Net deferred tax assets $ — $ — In assessing the valuation allowance for deferred tax assets, management considers whether it is more likely than not not In fiscal 2016, $3,564,000 may At March 31, 2018, Expires March 31, Net Operating Research and 2020 $ — $ 8 2021 — 2 2022 2,839 — 2023 1,863 1 2026 159 — 2027 2,665 1 2028 1,612 16 2031 389 — 2032 44 — 2033 76 — 2034 392 — 2035 18 — 2037 1,681 — Indefinite carryforward 266 — $ 12,004 $ 28 Under the Tax Act, the corporate Alternative Minimum Tax (AMT) was repealed. Taxpayers with AMT credit carryovers can use the credits to offset regular tax liability for any taxable year. In addition, the AMT credit is refundable in any taxable year beginning after 2017 2022 50% 100% 2021 2022. $120,000 March 31, 2018. 6.6% $8,000 $112,000 March 31, 2018 March 31, 2022: Tax Year Ended: AMT Credit Refund Request March 31, 2018 $ 56,000 March 31, 2019 28,000 March 31, 2020 14,000 March 31, 2021 7,000 March 31, 2022 7,000 $ 112,000 At March 31, 2018, $746,000. March 31, 2030 2037. March 31, 2018, $6,532,000. March 31, 2030 2037. The following represents the open tax years and jurisdictions that the Company used in its evaluation of tax positions: Open tax years ending March 31, Jurisdiction 2015 - 2018 U.S. Federal 2015 - 2018 State of Hawaii 2014 - 2018 State of California

Note 15 - Selected Quarterly Fi

Note 15 - Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
Quarterly Financial Information [Text Block]	Note 15 First Second Third Fourth Year (in thousands, except per share data) 201 8 Net sales $ 8,809 $ 8,055 $ 9,150 $ 8,101 $ 34,115 Gross profit 3,603 3,620 4,240 1,908 13,371 Net income (loss) 501 475 1,107 (1,058 ) 1,025 Net income (loss) per share Basic and diluted 0.09 0.08 0.19 (0.18 ) 0.18 201 7 Net sales $ 7,322 $ 9,862 $ 7,605 $ 7,253 $ 32,042 Gross profit 2,821 3,885 2,857 2,661 12,224 Net income (loss) (691 ) 99 (349 ) (274 ) (1,215 ) Net income (loss) per share Basic and diluted (0.12 ) 0.02 (0.06 ) (0.05 ) (0.21 ) ( 1 The first, second, third fourth 2018 $9,000, $75,000, $4,000 $720,000, third fourth 2017 $28,000, $73,000, $148,000 $5,000,

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Mar. 31, 2018
Notes to Financial Statements
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	Schedule II Cyanotech Corporation and Subsidiary Valuation and Qualifying Accounts Years Ended March 31, 201 8 , 201 7 and 201 6 (in thousands) Additions Description Balance at Charged to Charged to Deductions Balance at Year Allowance for Doubtful Accounts: 2018 $ 49 $ — $ — $ 22 $ 27 2017 136 — — 87 49 2016 6 130 — — 136

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. The accompanying consolidated financial statements include the accounts of Cyanotech Corporation and its wholly owned subsidiary, Nutrex Hawaii, Inc. (“Nutrex Hawaii” or “Nutrex”). All significant intercompany balances and transactions have been eliminated in consolidation.
Liquidity and Debt Covenant Compliance [Policy Text Block]	Liquidity As of March 31, 2018, $1.3 $7.9 $1.4 $6.2 March 31, 2017. August 30, 2016, June 3, 2016, $2.0 March 31, 2018, $0.5 $1.5 May 29, 2018, $0.5 $1.0 August 30, 2017 August 30, 2018, As of March 31, 2018, $6.4 August 2032. March 31, 2018. March 31, 2017, 1.92:1, 2.10:1. March 31, 2017, not Funds generated by operating activities and available cash continue to be the Company's most significant sources of liquidity for working capital requirements, debt service and funding of maintenance levels of capital expenditures. Based upon the Company's fiscal 2019 March 31, 2019, twelve March 31, 2019. no March 31, 2019.
Use of Estimates, Policy [Policy Text Block]	Estimates and Assumptions The preparation of the consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of any contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the period reported. Management reviews these estimates and assumptions periodically and reflects the effect of revisions in the period that they are determined to be necessary. Actual results could differ significantly from those estimates and assumptions. Significant estimates include forecast of future operating results, cash flows and financial position, inventory valuation and determination of production capacity and abnormal product costs, reserve for inventory, sales allowances, allowance for doubtful accounts and valuation of deferred tax assets.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Financial Instruments Cash primarily consists of cash on hand and cash in bank deposits. The Company applies a framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1 3 three Level 1 Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access. Level 2 Inputs to the valuation methodology include: ● Quoted prices for similar assets or liabilities in active markets; ● Quoted prices for identical or similar assets or liabilities in inactive markets; ● Inputs other than quoted prices that are observable for the asset or liability; and ● Inputs that are derived principally from or corroborated by observable market data by correlation or other means. If the asset or liability has a specified (contractual) term, the Level 2 Level 3 Inputs to the valuation methodology are unobservable and significant to the fair value. Cash, Accounts Receivable, Accounts Payable and Accrued Expenses Line of Credit and Long-Term Debt
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk The Company maintains its cash accounts with several banks located in Hawaii. The total cash balances are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000 March 31, 2018 $829,000. 32% 16%, March 31, 2018. 77% March 31, 2018. 24% March 31, 2017. 60% March 31, 2017. 19% 11%, March 31, 2016. 44% March 31, 2016. ten 70%, 60% 58% 2018, 2017 2016,
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Accounts Receivable and Allowance for Doubtful Accounts Accounts receivable are recorded at the invoiced amount and do not not 90 not
Inventory, Policy [Policy Text Block]	Inventories, net Inventories are stated at the lower of cost or net realizable value. Cost is determined using the first first third Management provides a reserve against inventory for known or expected inventory obsolescence. The reserve is determined by specific review of inventory items for product age and quality which may March 31, 2018 2017, $5,000 $3,000, The Company recognizes abnormal production costs, including fixed cost variances from normal production capacity, as an expense in the period incurred. Abnormal amounts of freight, handling costs and wasted material (spoilage) are recognized as current period charges and fixed production overhead costs are allocated to inventory based on the normal capacity of production facilities. Normal capacity is defined as “the production expected to be achieved over a number of periods or seasons under normal circumstances, taking into account the loss of capacity resulting from planned maintenance.” The Company expensed abnormal production costs of $538,000, $120,000 $395,000 March 31, 2018, 2017 2016, $271,000, $134,000 $149,000 March 31, 2018, 2017 2016,
Property, Plant and Equipment, Policy [Policy Text Block]	Equipment and Leasehold Improvements, net Equipment and leasehold improvements are stated at cost. Depreciation and amortization are provided using the straight-line method over the estimated useful lives for equipment and furniture and fixtures, and the shorter of the land lease term (see Notes 3 6 Equipment (in years) 3 to 10 Furniture and fixtures (in years) 3 to 7 Leasehold improvements (in years) 10 to 25 Capital project costs are accumulated in construction-in-progress until completed, at which time the costs are transferred to the relevant asset and commence depreciation. Repairs and Maintenance costs are expensed in the period incurred. Repairs and maintenance that significantly increase the useful life or value of the asset are capitalized and depreciated over the remaining life of the asset. The Company capitalizes interest cost incurred on funds used to construct property, plant, and equipment. The capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets Management reviews long-lived assets, such as equipment, leasehold improvements and purchased intangibles subject to amortization for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not not
Asset Retirement Obligation [Policy Text Block]	Accounting for Asset Retirement Obligations Management evaluates quarterly the potential liability for asset retirement obligations under the Company’s lease for its principal facility and corporate headquarters. No March 31, 2018 2017 7
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition We recognize revenues when the customer takes ownership and assumes the risk of loss. We have determined that transfer of title and risk of loss generally occurs when product is received by the customer, except in instances where the shipment terms are explicitly FOB Origin, and accordingly we recognize revenue at the point of delivery to the customer. For shipments with terms of FOB Origin where transfer of title and risk of loss occurs at the point of shipping, revenue is recognized upon shipment to the customer. Sales returns and allowances are estimated and recorded as a reduction to sales in the period in which sales are recorded. We record net shipping charges and sales tax in cost of goods sold.
Research and Development Expense, Policy [Policy Text Block]	Research and Development Research and development costs are expensed as incurred and consist primarily of labor, benefits and outside research.
Advertising Costs, Policy [Policy Text Block]	Advertising Advertising costs are expensed as incurred. Total advertising expense for the years ended March 31, 2018, 2017 2016 $1,548,000, $813,000 $942,000,
Income Tax, Policy [Policy Text Block]	Income Taxes Income taxes are accounted for under the asset and liability method. The asset and liability method requires the recognition of deferred tax assets and liabilities for the expected future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using income tax rates applicable to the period in which the tax difference is expected to reverse. Judgment is required in determining any valuation allowance recorded against deferred tax assets, specifically net operating loss carryforwards, tax credit carryforwards and deductible temporary differences that may In evaluating a tax position for recognition, management evaluates whether it is more-likely-than- not not 50% March 31, 2018 2017, no The Company recognizes accrued interest related to unrecognized tax benefits as well as any related penalties in interest expense in its condensed consolidated statements of operations. As of the date of adoption and during the years ended March 31, 2018, 2017 2016, no
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Share-Based Compensation The Company accounts for share-based payment arrangements using fair value. The Company currently has no not The Company utilizes the Black-Scholes option pricing model to determine the fair value of each option award. Expected volatilities are based on the historical volatility of the Company’s common stock over a period consistent with that of the expected term of the options. The expected term of the options are estimated based on factors such as vesting periods, contractual expiration dates and historical exercise behavior. The risk-free rates for periods within the contractual life of the options are based on the yields of U.S. Treasury instruments with terms comparable to the estimated option terms.
Earnings Per Share, Policy [Policy Text Block]	Per Share Amounts Basic earnings (loss) per common share is calculated by dividing net income (loss) for the year by the weighted average number of common shares outstanding during the year. Diluted earnings per common share is calculated by dividing net income for the year by the sum of the weighted average number of common shares outstanding during the year plus the number of potentially dilutive common shares (“dilutive securities”) that were outstanding during the year. Dilutive securities include restricted stock units and stock options granted pursuant to the Company’s stock option plans. Dilutive securities related to the Company’s stock option plans are included in the calculation of diluted earnings per common share using the treasury stock method. Potentially dilutive securities are excluded from the computation of earnings per share in periods in which a net loss is reported, as their effect would be antidilutive. A reconciliation of the numerators and denominators of the basic and diluted income (loss) per common share calculations for the years ended March 31, 2018, 2017 2016 11.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements In May 2017, 2017 09, Compensation-Stock Compensation (Topic 718 ) Scope of Modification Accounting. 2017 09 718, December 15, 2017 not In November 2016, 2016 18, Statement of Cash Flows (Topic 230 ): Restricted Cash” No. 2016 18” . 230, 2016 18 December 15, 2017, April 1, 2018. not In August 2016, 2016 15, Statement of Cash Flows (Topic 230 ) Classification of Certain Cash Receipts and Cash Payments” No. 2016 15” eight not No. 2016 15 December 15, 2017, April 1, 2018. not In March 2016, 2016 09, Compensation – Stock Compensation (Topic 718 ) Improvements to Employee Share-Based Payment Accounting” (“ No. 2016 09 ”) 718 No. 2016 09 December 15, 2016, may April 1, 2017, 2016 09 2016 09 not In February 2016, 2016 02, Leases (Topic 842 )” (“ No. 2016 02” No. 2016 02 No. 2016 02 twelve No. 2016 02 December 15, 2018. No. 2016 02 April 1, 2019. not In November 2015, No. 2015 17, Income Taxes (Topic 740 ): Balance Sheet Classification of Deferred Taxes” 2015 17 December 15, 2016, April 1, 2017 In July 2015, No. 2015 11, “Inventory: Simplifying the Measurement of Inventory” not first December 15, 2016, April 1, 2017. not In May 2014, No. 2014 09, Revenue from Contracts with Customers (Topic 606 December 2016 2016 20. August 2015, No 2015 14 Revenue from Contracts with Customers (Topic 606 Deferral of the Effective Date, 2014 09 December 15, 2017, not The Company adopted ASC 606 April 1, 2018. 606 April 1, 2018 not

Note 1 - Description of Busin24

Note 1 - Description of Business and Summary of Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Property, Plant, and Equipment, Estimated Useful Lives [Table Text Block]	Equipment (in years) 3 to 10 Furniture and fixtures (in years) 3 to 7 Leasehold improvements (in years) 10 to 25

Note 2 - Inventories, Net (Tabl

Note 2 - Inventories, Net (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Inventory, Current [Table Text Block]	201 8 201 7 (in thousands) Raw materials $ 410 $ 347 Work in process 2,602 2,036 Finished goods(1) 5,878 5,460 Supplies 144 129 Inventories, net $ 9,034 $ 7,972

Note 3 - Equipment and Leaseh26

Note 3 - Equipment and Leasehold Improvements, Net (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Property, Plant and Equipment [Table Text Block]	201 8 201 7 (in thousands) Equipment(1) $ 17,935 $ 17,492 Leasehold improvements 14,248 13,892 Furniture and fixtures 348 380 32,531 31,764 Less accumulated depreciation and amortization (17,346 ) (15,835 ) Construction in-progress 549 783 Equipment and leasehold improvements, net $ 15,734 $ 16,712

Note 5 - Accrued Expenses (Tabl

Note 5 - Accrued Expenses (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	201 8 201 7 (in thousands) Wages, commissions, bonus and profit sharing $ 707 $ 793 Rent and utilities 69 69 Other accrued expenses 116 151 Total accrued expenses $ 892 $ 1,013

Note 6 - Long-term Debt (Tables

Note 6 - Long-term Debt (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	201 8 201 7 (in thousands) Long-term debt $ 6,678 $ 7,139 Less current maturities (655 ) (623 ) Long-term debt, excluding current maturities 6,023 6,516 Less unamortized debt issuance costs (233 ) (267 ) Total long-term debt, net of current maturities and unamortized debt issuance costs $ 5,790 $ 6,249
Schedule of Maturities of Long-term Debt [Table Text Block]	Year ending March 31 (in thousands) 2019 $ 655 2020 682 2021 690 2022 707 2023 513 Thereafter 3,431 Total principal payments $ 6,678

Note 7 - Leases (Tables)

Note 7 - Leases (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Year ending March 31 (in thousands) 2019 $ 626 2020 636 2021 536 2022 535 2023 456 Thereafter 3,815 Total minimum lease payments $ 6,604

Note 9 - Share-based Compensa30

Note 9 - Share-based Compensation (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Share-based Compensation Shares Authorized Available and Outstanding by Plan [Table Text Block]	As of March 31, 201 8 Authorized Available Outstanding 2016 Plan 1,300,000 1,131,992 159,675 2014 Directors Plan 350,000 231,623 12,000 2005 Plan — — 445,400 2004 Directors Plan — — 12,000 Total 1,650,000 1,363,615 629,075
Share-based Compensation, Stock Options, Activity [Table Text Block]	Option Activity Shares Weighted Weighted Average (in years) Aggregate Outstanding at March 31, 2015 1,433,216 $ 4.08 6.4 $ 6,221,909 Granted 6,000 5.91 Exercised (21,800 ) 3.26 Forfeited (732,416 ) 3.59 Outstanding at March 31, 2016 685,000 $ 4.65 5.7 $ 566,323 Granted 6,000 4.08 Exercised (18,000 ) 2.77 Forfeited (170,000 ) 6.44 Outstanding at March 31, 2017 503,000 $ 4.10 4.7 $ 145,946 Granted 120,000 3.53 Exercised (29,150 ) 2.59 Forfeited (3,700 ) 4.50 Expired (750 ) 1.60 Outstanding at March 31, 2018 589,400 $ 4.06 4.9 $ 675,300 Exercisable at March 31, 2018 469,400 $ 4.20 3.8 $ 486,900
Schedule of Nonvested Share Activity [Table Text Block]	Nonvested Options Shares Weighted Nonvested at March 31, 2017 19,500 $ 2.93 Granted 120,000 1.81 Vested (19,500 ) 2.93 Nonvested at March 31, 2018 120,000 $ 1.81
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Outstanding Options Exercisable Options Range of Exercise Prices Number Remaining Weighted Number of Weighted $1.60 - $3.70 172,200 5.3 $ 3.05 97,200 $ 2.81 $3.71 - $4.42 239,700 4.7 $ 3.83 194,700 $ 3.83 $4.43 - $5.40 95,000 5.2 $ 5.00 95,500 $ 5.00 $5.41 - $7.08 82,500 4.6 $ 5.77 82,500 $ 5.77 Total stock options 589,400 4.9 $ 4.06 469,400 $ 4.20
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	201 8 201 7 201 6 Exercise Price $ 3.83 $ 4.08 $ 5.91 Volatility 51.91 % 51.13 % 50.00 % Risk Free Rate 2.50 % 0.60 % 0.22 % Vesting Period (in years) 3.0 0.5 0.5 Forfeiture Rate 0.00 % 0.00 % 0.00 % Expected Life (in years) 6.00 1.00 1.00 Dividend Rate 0 % 0 % 0 %
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	Nonvested Restricted Stock Units Shares Weighted Nonvested restricted stock units at March 31, 2017 25,000 $ 3.85 Granted 28,074 $ 3.92 Vested (8,333 ) $ 3.85 Exercised — $ — Forfeited (5,066 ) $ 3.92 Nonvested restricted stock units at March 31, 2018 39,675 $ 3.89

Note 11 - Earnings (Loss) Per31

Note 11 - Earnings (Loss) Per Share (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Net Income (l oss ) (Numerator) Shares Per Share (in thousands, except per share amounts) Year ended March 31, 2018: Basic income per share $ 1,025 5,709 $ 0.18 Effective dilutive securities—Common stock options — 72 — Diluted income per share $ 1,025 5,781 $ 0.18 Year ended March 31, 2017: Basic and diluted loss per share $ (1,215 ) 5,658 $ (0.21 ) Year ended March 31, 2016: Basic and diluted loss per share $ (4,395 ) 5,581 $ (0.79 )

Note 13 - Product Line and Ge32

Note 13 - Product Line and Geographic Information (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Revenue from External Customers by Products and Services [Table Text Block]	201 8 201 7 201 6 (in thousands) Net sales: Natural astaxanthin products BioAstin® $ 21,650 $ 19,357 $ 19,829 Spirulina products Spirulina Pacifica® 12,465 12,685 12,011 $ 34,115 $ 32,042 $ 31,840
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	201 8 201 7 201 6 (dollars in thousands) Net sales(1): United States $ 26,348 77 % $ 22,978 72 % $ 22,711 71 % Asia / Pacific 3,238 9 % 4,017 13 % 4,130 13 % Europe 2,540 8 % 3,652 11 % 2,990 9 % Other 1,989 6 % 1,395 4 % 2,009 7 % $ 34,115 100 % $ 32,042 100 % $ 31,840 100 %

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]	2018 2017 2016 (in thousands) Current: Federal $ 112 $ (2 ) $ (1 ) State (2 ) (3 ) 23 Total current benefit (expense) 110 (5 ) 22 Deferred: Federal — — (3,027 ) State — — (323 ) Total deferred expense — — (3,350 ) Income tax benefit (expense) $ 110 $ (5 ) $ (3,328 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2018 2017 2016 (in thousands) Tax provision at federal statutory income tax rate $ (282 ) $ 411 $ 363 Stock based compensation (11 ) (281 ) (128 ) Decrease (increase) in valuation allowance 1,565 (158 ) (3,564 ) State income taxes benefit (expense), net of federal income tax effect (36 ) 49 25 State rate adjustment 3 (1 ) 1 AMT Credit 112 — — Tax Cuts and Jobs Act (1,244 ) — — Other, net 3 (25 ) (25 ) Income tax benefit (expense) $ 110 $ (5 ) $ (3,328 )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2018 2017 (in thousands) Deferred tax assets: Net operating loss carry forwards $ 2,903 $ 4,325 Inventory 295 405 Compensation accrual 153 187 Tax credit carry forwards 36 147 Other 22 40 Gross deferred tax assets 3,409 5,104 Less valuation allowance (2,158 ) (3,722 ) Net deferred tax assets 1,251 1,382 Deferred tax liability- Depreciation and amortization (1,251 ) (1,382 ) Net deferred tax assets $ — $ —
Schedule of Operating Loss and Tax Credit Carry Forwards [Table Text Block]	Expires March 31, Net Operating Research and 2020 $ — $ 8 2021 — 2 2022 2,839 — 2023 1,863 1 2026 159 — 2027 2,665 1 2028 1,612 16 2031 389 — 2032 44 — 2033 76 — 2034 392 — 2035 18 — 2037 1,681 — Indefinite carryforward 266 — $ 12,004 $ 28
Schedule of Alternative Minimum Tax Credit Carryforwards Refundable [Text Block]	Tax Year Ended: AMT Credit Refund Request March 31, 2018 $ 56,000 March 31, 2019 28,000 March 31, 2020 14,000 March 31, 2021 7,000 March 31, 2022 7,000 $ 112,000
Summary of Income Tax Contingencies [Table Text Block]	Open tax years ending March 31, Jurisdiction 2015 - 2018 U.S. Federal 2015 - 2018 State of Hawaii 2014 - 2018 State of California

Note 15 - Selected Quarterly 34

Note 15 - Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Quarterly Financial Information [Table Text Block]	First Second Third Fourth Year (in thousands, except per share data) 201 8 Net sales $ 8,809 $ 8,055 $ 9,150 $ 8,101 $ 34,115 Gross profit 3,603 3,620 4,240 1,908 13,371 Net income (loss) 501 475 1,107 (1,058 ) 1,025 Net income (loss) per share Basic and diluted 0.09 0.08 0.19 (0.18 ) 0.18 201 7 Net sales $ 7,322 $ 9,862 $ 7,605 $ 7,253 $ 32,042 Gross profit 2,821 3,885 2,857 2,661 12,224 Net income (loss) (691 ) 99 (349 ) (274 ) (1,215 ) Net income (loss) per share Basic and diluted (0.12 ) 0.02 (0.06 ) (0.05 ) (0.21 )

Schedule II - Valuation and Q35

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Mar. 31, 2018
Notes Tables
Valuation Allowances and Reserves [Table Text Block]	Additions Description Balance at Charged to Charged to Deductions Balance at Year Allowance for Doubtful Accounts: 2018 $ 49 $ — $ — $ 22 $ 27 2017 136 — — 87 49 2016 6 130 — — 136

Note 1 - Description of Busin36

Note 1 - Description of Business and Summary of Accounting Policies (Details Textual)	May 29, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Aug. 31, 2016USD ($)	Aug. 30, 2016USD ($)	Mar. 31, 2015USD ($)
Number of Microalgal Species Cultivated										2
Number of Product Lines										2
Number of Operating Segments										1
Cash and Cash Equivalents, at Carrying Value, Ending Balance		$ 1,329,000				$ 1,407,000				$ 1,329,000	$ 1,407,000	$ 1,240,000			$ 2,226,000
Working Capital (Deficit)		7,900,000				6,200,000				7,900,000	6,200,000
Line of Credit, Current		500,000				611,000				500,000	611,000
Cash Uninsured Amount One		829,000								829,000
Inventory Valuation Reserves, Ending Balance		5,000				3,000				5,000	3,000
Inventory Abnormal Production Costs		720,000	$ 4,000	$ 75,000	$ 9,000	5,000	$ 148,000	$ 73,000	$ 28,000	538,000	120,000	395,000
Non Inventoriable Fixed Costs										271,000	134,000	149,000
Asset Retirement Obligation, Ending Balance		0				0				0	0
Advertising Expense										1,548,000	813,000	942,000
Unrecognized Tax Benefits, Ending Balance		0				0				0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total		0				$ 0				$ 0	$ 0	$ 0
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage										70.00%	60.00%	58.00%
Number of Major Customers										2	1	2
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer Number 1 [Member]
Concentration Risk, Percentage										32.00%	24.00%	19.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer Number 2 [Member]
Concentration Risk, Percentage										16.00%		11.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage										77.00%	60.00%	44.00%
Number of Major Customers										3	3	2
First Foundation Bank [Member]
Long-term Debt and Capital Lease Obligations, Current and Noncurrent		6,400,000								$ 6,400,000
First Foundation Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity													$ 2,000,000	$ 2,000,000
Line of Credit, Current		500,000								500,000				500,000
Line of Credit Facility, Remaining Borrowing Capacity		$ 1,500,000								$ 1,500,000				$ 1,500,000
Current Ratio						1.92					1.92
Debt Covenant, Minimum Current Ratio						2.1					2.1
First Foundation Bank [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility, Remaining Borrowing Capacity	$ 1,000,000
Proceeds from Lines of Credit, Total	$ 500,000

Note 1 - Description of Busin37

Note 1 - Description of Business and Summary of Accounting Policies - Estimated Useful Lives (Details)	12 Months Ended
	Mar. 31, 2018
Equipment [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Equipment [Member] | Maximum [Member]
Estimated useful lives (Year)	10 years
Furniture and Fixtures [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Estimated useful lives (Year)	7 years
Leasehold Improvements [Member] | Minimum [Member]
Estimated useful lives (Year)	10 years
Leasehold Improvements [Member] | Maximum [Member]
Estimated useful lives (Year)	25 years

Note 2 - Inventories, Net (Deta

Note 2 - Inventories, Net (Details Textual) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Inventory Valuation Reserves, Ending Balance	$ 5,000	$ 3,000

Note 2 - Inventories, Net - Com

Note 2 - Inventories, Net - Components of Inventory (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Mar. 31, 2017
Raw materials		$ 410	$ 347
Work in process		2,602	2,036
Finished goods(1)	[1]	5,878	5,460
Supplies		144	129
Inventories, net		$ 9,034	$ 7,972
[1]	Net of reserve for obsolescence of $5,000 and $3,000 at March 31, 2018 and 2017, respectively.

Note 3 - Equipment and Leaseh40

Note 3 - Equipment and Leasehold Improvements, Net (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Capital Leased Assets, Gross, Total	$ 373,000	$ 373,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	175,000	106,000
Gain (Loss) on Disposition of Assets, Total	(106,000)	(63,000)	$ (11,000)
Depreciation, Depletion and Amortization, Total	1,877,000	1,978,000	1,520,000
Interest Costs Capitalized	$ 0	$ 0	$ 173,000

Note 3 - Equipment and Leaseh41

Note 3 - Equipment and Leasehold Improvements, Net - Components of Equipment and Leasehold Improvements (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Mar. 31, 2017
Equipment and leasehold improvements, gross		$ 32,531	$ 31,764
Less accumulated depreciation and amortization		(17,346)	(15,835)
Construction in-progress		549	783
Equipment and leasehold improvements, net		15,734	16,712
Equipment [Member]
Equipment and leasehold improvements, gross	[1]	17,935	17,492
Leasehold Improvements [Member]
Equipment and leasehold improvements, gross		14,248	13,892
Furniture and Fixtures [Member]
Equipment and leasehold improvements, gross		$ 348	$ 380
[1]	Includes $373,000 of equipment under capital lease at March 31, 2018 and 2017 respectively, with accumulated amortization of $175,000 and $106,000, respectively.

Note 4 - Notes Payable (Details

Note 4 - Notes Payable (Details Textual) - USD ($)	May 29, 2018	Aug. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Aug. 31, 2016
Line of Credit, Current			$ 500,000	$ 611,000
First Foundation Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,000,000			$ 2,000,000
Line of Credit, Current		500,000	500,000
Line of Credit Facility, Remaining Borrowing Capacity		$ 1,500,000	$ 1,500,000
First Foundation Bank [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility, Remaining Borrowing Capacity	$ 1,000,000
Proceeds from Lines of Credit, Total	$ 500,000
First Foundation Bank [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]
Debt Instrument Reference Rate			4.75%
Debt Instrument, Basis Spread on Variable Rate		2.00%

Note 5 - Accrued Expenses - Com

Note 5 - Accrued Expenses - Components of Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Wages, commissions, bonus and profit sharing	$ 707	$ 793
Rent and utilities	69	69
Other accrued expenses	116	151
Total accrued expenses	$ 892	$ 1,013

Note 6 - Long-term Debt (Detail

Note 6 - Long-term Debt (Details Textual)

Oct. 06, 2017USD ($)

Sep. 18, 2015USD ($)

Jul. 01, 2015

Mar. 31, 2015USD ($)

Aug. 14, 2012USD ($)

Feb. 29, 2016USD ($)

Jul. 30, 2015USD ($)

Dec. 31, 2017USD ($)

Mar. 31, 2018USD ($)

Mar. 31, 2017USD ($)

Mar. 31, 2016USD ($)

Aug. 31, 2016USD ($)

Jul. 31, 2015USD ($)

Repayments of Notes Payable

$ 500,000

$ 600,000

$ 500,000

Long-term Debt, Total

156,000

Proceeds from Issuance of Long-term Debt, Total

166,000

$ 2,407,000

Capital Leased Assets, Gross, Total

373,000

373,000

Thermo Fisher Financial [Member]

Capital Leased Assets, Gross, Total

$ 52,000

Thermo Fisher Financial [Member] | Capital Lease Obligations [Member]

Debt Instrument, Interest Rate, Stated Percentage

6.50%

Long-term Debt and Capital Lease Obligations, Current and Noncurrent

$ 86,000

$ 0

30,000

Debt Instrument Periodic Payments Number

36

Thermo Fisher Financial [Member] | Capital Lease Asses Payable in 36 Equal Monthly Payments [Member]

Debt Instrument, Interest Rate, Stated Percentage

12.90%

Debt Instrument Periodic Payments Number

36

Capital Lease Obligations, Total

$ 28,000

43,000

Bank of the West Finance [Member]

Capital Leased Assets, Gross, Total

$ 51,000

Debt Instrument Periodic Payments Number

60

Bank of the West Finance [Member] | Capital Lease Obligations [Member]

Debt Instrument, Interest Rate, Stated Percentage

4.18%

Capital Lease Obligations, Total

$ 32,000

42,000

Hungtington Technology Finance [Member]

Long-term Debt and Capital Lease Obligations, Current and Noncurrent

$ 174,000

Hungtington Technology Finance [Member] | Capital Lease Obligations [Member]

Debt Instrument, Interest Rate, Stated Percentage

6.57%

Long-term Debt and Capital Lease Obligations, Current and Noncurrent

$ 88,000

121,000

Debt Instrument Periodic Payments Number

60

The 2015 Loan Agreement [Member]

Proceeds from Issuance of Debt

$ 2,500,000

Debt Instrument, Term

7 years

Debt Instrument, Prepayment Penalty Percentage

5.00%

Debt Instrument, Prepayment Penalty Percentage Reduction During Each Year

1.00%

Long-term Debt and Capital Lease Obligations, Current and Noncurrent

$ 1,726,000

2,049,000

Debt Instrument One Time Origination and Guaranty Fees

$ 113,900

Debt Instrument Annual Renewal Fee Payable Percentage

0.50%

Debt Instrument Guaranteed Portion

80.00%

The 2015 Loan Agreement [Member] | Minimum [Member]

Debt Instrument, Interest Rate, Stated Percentage

6.00%

The 2015 Loan Agreement [Member] | Prime Rate [Member]

Debt Instrument Reference Rate

4.75%

Debt Instrument, Basis Spread on Variable Rate

2.00%

Term Loan Agreement, Maturing on August 14, 2032 [Member]

Proceeds from Issuance of Debt

$ 5,500,000

Debt Instrument Reference Rate

4.75%

Debt Instrument, Basis Spread on Variable Rate

1.00%

Long-term Debt and Capital Lease Obligations, Current and Noncurrent

$ 4,648,000

$ 4,854,000

Debt Instrument One Time Origination and Guaranty Fees

$ 214,500

Debt Instrument Annual Renewal Fee Payable Percentage

0.25%

Debt Instrument Guaranteed Portion

80.00%

Debt Instrument Interest Payment Period

1 year

Debt Instrument Amortization Period

19 years

Term Loan Agreement, Maturing on August 14, 2032 [Member] | Minimum [Member]

Debt Instrument, Interest Rate During Period

5.50%

Term Loan Agreement, Promissory Note One [Member]

Proceeds from Issuance of Debt

$ 2,250,000

Term Loan Agreement, Promissory Note Two [Member]

Proceeds from Issuance of Debt

$ 3,250,000

Equipment Finance Agreement [Member]

Debt Instrument, Term

5 years

Debt Instrument, Interest Rate, Stated Percentage

4.75%

Debt Agreement, Maximum Borrowing Capacity

$ 175,000

Equipment Finance Agreement [Member] | Restricted Cash [Member]

Proceeds from Issuance of Long-term Debt, Total

$ 65,000

Note 6 - Long-term Debt - Summa

Note 6 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Total principal payments	$ 6,678	$ 7,139
Less current maturities	(655)	(623)
Long-term debt, excluding current maturities	6,023	6,516
Less unamortized debt issuance costs	(233)	(267)
Total long-term debt, net of current maturities and unamortized debt issuance costs	$ 5,790	$ 6,249

Note 6 - Long-term Debt - Futur

Note 6 - Long-term Debt - Future Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
2,019	$ 655
2,020	682
2,021	690
2,022	707
2,023	513
Thereafter	3,431
Total principal payments	$ 6,678	$ 7,139

Note 7 - Leases (Details Textua

Note 7 - Leases (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating Leases Term	40 years
Operating Leases, Rent Expense, Contingent Rentals	$ 49,000	$ 80,000	$ 65,000
Operating Leases, Rent Expense, Net, Total	$ 578,000	$ 605,000	$ 622,000

Note 7 - Leases - Summary of Fu

Note 7 - Leases - Summary of Future Minimum Lease Payments Under Non-cancelable Operating Leases (Details) $ in Thousands	Mar. 31, 2018USD ($)
2,019	$ 626
2,020	636
2,021	536
2,022	535
2,023	456
Thereafter	3,815
Total minimum lease payments	$ 6,604

Note 8 - Other Commitments an49

Note 8 - Other Commitments and Contingencies (Details Textual)	Mar. 31, 2018USD ($)
Purchase Obligation, Total	$ 449,000

Note 9 - Share-based Compensa50

Note 9 - Share-based Compensation (Details Textual)	Apr. 05, 2018$ / sharesshares	Mar. 31, 2018USD ($)$ / sharesshares	Mar. 31, 2017USD ($)$ / sharesshares	Mar. 31, 2016USD ($)$ / sharesshares	Aug. 25, 2016shares	Mar. 31, 2015$ / shares	Aug. 28, 2014shares
Number of Shareholder Approved Share-based Compensation Plans		2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,363,615
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,650,000
Share Price | $ / shares		$ 5.10	$ 3.85	$ 4.98		$ 8.42
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $		$ 67,000	$ 23,000	$ 58,000
ShareBased Compensation Arrangement By Share Based Payment Award Weighted Average Grant Date Fair Value Options Granted | $		67,000	5,000	7,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $		57,000	332,000	651,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total | $		181,000
Employee Stock Option [Member]
Allocated Share-based Compensation Expense, Total | $		$ 62,000	154,000	587,000
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 years 109 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		28,074
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares		$ 3.92
Restricted Stock Units (RSUs) [Member] | Employees [Member]
Allocated Share-based Compensation Expense, Total | $		$ 62,000	0	0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total | $		122,730
Restricted Stock Units (RSUs) [Member] | Employees [Member] | Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,474
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 5.25
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years
Restricted Stock [Member] | Non-employee Directors [Member]
Allocated Share-based Compensation Expense, Total | $		$ 276,000	$ 78,000	$ 78,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		57,501	19,117	13,198
Maximum [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
The 2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
The 2016 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,131,992
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					1,300,000
The 2016 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		1,131,992
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		1,300,000
The 2016 Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized for Issuance in Connection with Performance Awards and Stock Awards					600,000
2014 Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		231,623
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		350,000					350,000
2004 Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized

Note 9 - Share-based Compensa51

Note 9 - Share-based Compensation - Shares Authorized, Available for Future Grant and Outstanding Under Each Plan (Details) - shares	Mar. 31, 2018	Mar. 31, 2017	Aug. 25, 2016	Aug. 28, 2014
Authorized (in shares)	1,650,000
Available (in shares)	1,363,615
Outstanding (in shares)	629,075
Restricted Stock Units (RSUs) [Member]
Outstanding (in shares)	39,675	25,000
The 2016 Plan [Member]
Authorized (in shares)			1,300,000
Available (in shares)	1,131,992
The 2016 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Authorized (in shares)	1,300,000
Available (in shares)	1,131,992
Outstanding (in shares)	159,675
2014 Directors Plan [Member]
Authorized (in shares)	350,000			350,000
Available (in shares)	231,623
Outstanding (in shares)	12,000
The 2005 Plan [Member]
Authorized (in shares)
Available (in shares)	0
Outstanding (in shares)	445,400
2004 Directors Plan [Member]
Authorized (in shares)
Available (in shares)	0
Outstanding (in shares)	12,000

Note 9 - Share-based Compensa52

Note 9 - Share-based Compensation - Summary of Option Activity Under Stock Plans (Details) - USD ($)	12 Months Ended			15 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Outstanding (in shares)	503,000	685,000	1,433,216
Outstanding, weighted average exercise price (in dollars per share)	$ 4.10	$ 4.65	$ 4.08
Outstanding, weighted average remaining contractual term (Year)	4 years 328 days	4 years 255 days	5 years 255 days	6 years 146 days
Outstanding, aggregate intrinsic value	$ 675,300	$ 145,946	$ 566,323	$ 6,221,909
Granted (in shares)	120,000	6,000	6,000
Granted, weighted average exercise price (in dollars per share)	$ 3.53	$ 4.08	$ 5.91
Exercised (in shares)	(29,150)	(18,000)	(21,800)
Exercised, weighted average exercise price (in dollars per share)	$ 2.59	$ 2.77	$ 3.26
Forfeited (in shares)	(3,700)	(170,000)	(732,416)
Forfeited, weighted average exercise price (in dollars per share)	$ 4.50	$ 6.44	$ 3.59
Expired (in shares)	(750)
Expired, weighted average exercise price (in dollars per share)	$ 1.60
Outstanding (in shares)	589,400	503,000	685,000	1,433,216
Outstanding, weighted average exercise price (in dollars per share)	$ 4.06	$ 4.10	$ 4.65	$ 4.08
Exercisable (in shares)	469,400
Exercisable, weighted average exercise price (in dollars per share)	$ 4.20
Exercisable, weighted average remaining contractual term (Year)	3 years 292 days
Exercisable, aggregate intrinsic value	$ 486,900

Note 9 - Share-based Compensa53

Note 9 - Share-based Compensation - Summary of Non-vested Options (Details) - $ / shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Nonvested (in shares)	19,500
Nonvested (in dollars per share)	$ 2.93
Granted (in shares)	120,000	6,000	6,000
Granted (in dollars per share)	$ 1.81
Vested (in shares)	(19,500)
Vested (in dollars per share)	$ 2.93
Nonvested (in shares)	120,000	19,500
Nonvested (in dollars per share)	$ 1.81	$ 2.93

Note 9 - Share-based Compensa54

Note 9 - Share-based Compensation - Summary of the Weighted-average Characteristics of Outstanding Stock Options (Details)	12 Months Ended
	Mar. 31, 2018$ / sharesshares
Outstanding Options Number of Shares (in shares) | shares	589,400
Outstanding Options Remaining Life (Year)	4 years 328 days
Outstanding Options Weighted Average Price (in dollars per share)	$ 4.06
Exercisable Options Number of Shares (in shares) | shares	469,400
Exercisable Options Weighted Average Price (in dollars per share)	$ 4.20
Range 01 [Member]
Lower Range of Exercise (in dollars per share)	1.60
Upper Range of Exercise (in dollars per share)	$ 3.70
Outstanding Options Number of Shares (in shares) | shares	172,200
Outstanding Options Remaining Life (Year)	5 years 109 days
Outstanding Options Weighted Average Price (in dollars per share)	$ 3.05
Exercisable Options Number of Shares (in shares) | shares	97,200
Exercisable Options Weighted Average Price (in dollars per share)	$ 2.81
Range 02 [Member]
Lower Range of Exercise (in dollars per share)	3.71
Upper Range of Exercise (in dollars per share)	$ 4.42
Outstanding Options Number of Shares (in shares) | shares	239,700
Outstanding Options Remaining Life (Year)	4 years 255 days
Outstanding Options Weighted Average Price (in dollars per share)	$ 3.83
Exercisable Options Number of Shares (in shares) | shares	194,700
Exercisable Options Weighted Average Price (in dollars per share)	$ 3.83
Range 03 [Member]
Lower Range of Exercise (in dollars per share)	4.43
Upper Range of Exercise (in dollars per share)	$ 5.40
Outstanding Options Number of Shares (in shares) | shares	95,000
Outstanding Options Remaining Life (Year)	5 years 73 days
Outstanding Options Weighted Average Price (in dollars per share)	$ 5
Exercisable Options Number of Shares (in shares) | shares	95,500
Exercisable Options Weighted Average Price (in dollars per share)	$ 5
Range 04 [Member]
Lower Range of Exercise (in dollars per share)	5.41
Upper Range of Exercise (in dollars per share)	$ 7.08
Outstanding Options Number of Shares (in shares) | shares	82,500
Outstanding Options Remaining Life (Year)	4 years 219 days
Outstanding Options Weighted Average Price (in dollars per share)	$ 5.77
Exercisable Options Number of Shares (in shares) | shares	82,500
Exercisable Options Weighted Average Price (in dollars per share)	$ 5.77

Note 9 - Share-based Compensa55

Note 9 - Share-based Compensation - Summary of Valuation Assumptions Related to Options Granted (Details) - $ / shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Exercise Price (in dollars per share)	$ 3.83	$ 4.08	$ 5.91
Volatility	51.91%	51.13%	50.00%
Risk Free Rate	2.50%	0.60%	0.22%
Vesting Period (in years) (Year)	3 years	182 days	182 days
Forfeiture Rate	0.00%	0.00%	0.00%
Expected Life (in years) (Year)	6 years	1 year	1 year
Dividend Rate	0.00%	0.00%	0.00%

Note 9 - Share-based Compensa56

Note 9 - Share-based Compensation - Restricted Stock Units (Details)	12 Months Ended
	Mar. 31, 2018$ / sharesshares
Nonvested restricted stock units at March 31, 2018 (in shares)	629,075
Restricted Stock Units (RSUs) [Member]
Nonvested restricted stock units at March 31, 2017 (in shares)	25,000
Nonvested restricted stock units at March 31, 2017, weighted average grant price (in dollars per share) | $ / shares	$ 3.85
Granted (in shares)	28,074
Granted, weighted average grant price (in dollars per share) | $ / shares	$ 3.92
Vested (in shares)	(8,333)
Vested, weighted average grant price (in dollars per share) | $ / shares	$ 3.85
Exercised (in shares)
Exercised, weighted average grant price (in dollars per share) | $ / shares
Forfeited (in shares)	(5,066)
Forfeited, weighted average grant price (in dollars per share) | $ / shares	$ 3.92
Nonvested restricted stock units at March 31, 2018 (in shares)	39,675
Nonvested restricted stock units at March 31, 2018, weighted average grant price (in dollars per share) | $ / shares	$ 3.89

Note 10 - Common and Preferre57

Note 10 - Common and Preferred Stock (Details Textual) - shares	Mar. 31, 2018	Mar. 31, 2017
Shares Authorized	60,000,000
Common Stock, Shares Authorized	50,000,000	50,000,000
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued, Total	0	0
Preferred Stock, Shares Outstanding, Ending Balance	0	0

Note 11 - Earnings (Loss) Per58

Note 11 - Earnings (Loss) Per Share (Details Textual) - shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	120,000	6,000	58,000
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	39,675	25,000

Note 11 - Earnings (Loss) Per59

Note 11 - Earnings (Loss) Per Share - Summary of Reconciliations Between the Numerator and the Denominator of the Basic and Diluted Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Mar. 31, 2018	[1]	Dec. 31, 2017	[1]	Sep. 30, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	[1]	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net income (loss)	$ (1,058)		$ 1,107		$ 475		$ 501		$ (274)		$ (349)		$ 99		$ (691)		$ 1,025	$ (1,215)	$ (4,395)
Shares outstanding - basic (in shares)																	5,709	5,658	5,581
Earnings per share - basic (in dollars per share)																	$ 0.18	$ (0.21)	$ (0.79)
Effective dilutive securities—Common stock options
Effective dilutive securities—Common stock options oustanding (in shares)																	72
Net income - diluted																	$ 1,025
Shares outstanding - diluted (in shares)																	5,781	5,658	5,581
Earnings per share - diluted (in dollars per share)																	$ 0.18	$ (0.21)	$ (0.79)
Shares outstanding - basic and diluted (in shares)																		5,658	5,581
Basic and diluted loss per share (in dollars per share)	$ (0.18)		$ 0.19		$ 0.08		$ 0.09		$ (0.05)		$ (0.06)		$ 0.02		$ (0.12)		$ 0.18	$ (0.21)	$ (0.79)
[1]	The first, second, third and fourth quarters of 2018 include abnormal production costs of $9,000, $75,000, $4,000 and $720,000, respectively. The first, second, third and fourth quarters of 2017 include abnormal production costs of $28,000, $73,000, $148,000 and $5,000, respectively.

Note 12 - Profit Sharing Plan60

Note 12 - Profit Sharing Plan and 401k Plan (Details Textual) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Profit Sharing Defined Contribution Plan [Member]
Defined Contribution Plan, Cost	$ 91,000	$ 4,000	$ 0
Defined Contribution 401K Plan [Member]
Defined Contribution Plan, Cost	$ 117,000	$ 139,000	$ 147,000
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	2.00%

Note 13 - Product Line and Ge61

Note 13 - Product Line and Geographic Information - Net Sales by Product Line (Details) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Mar. 31, 2018

[1]

Dec. 31, 2017

[1]

Sep. 30, 2017

[1]

Jun. 30, 2017

[1]

Mar. 31, 2017

[1]

Dec. 31, 2016

[1]

Sep. 30, 2016

[1]

Jun. 30, 2016

[1]

Mar. 31, 2018

Mar. 31, 2017

Mar. 31, 2016

Net sales:

Net sales

$ 8,101

$ 9,150

$ 8,055

$ 8,809

$ 7,253

$ 7,605

$ 9,862

$ 7,322

$ 34,115

$ 32,042

$ 31,840

Natural Astaxanthin Products Bio Astin [Member]

Net sales:

Net sales

21,650

19,357

19,829

Spirulina Products [Member]

Net sales:

Net sales

$ 12,465

$ 12,685

$ 12,011

[1]

The first, second, third and fourth quarters of 2018 include abnormal production costs of $9,000, $75,000, $4,000 and $720,000, respectively. The first, second, third and fourth quarters of 2017 include abnormal production costs of $28,000, $73,000, $148,000 and $5,000, respectively.

Note 13 - Product Line and Ge62

Note 13 - Product Line and Geographic Information - Sales by Geographic Region (Details) - USD ($) $ in Thousands		3 Months Ended																12 Months Ended
		Mar. 31, 2018	[1]	Dec. 31, 2017	[1]	Sep. 30, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	[1]	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net sales(1):
Net sales		$ 8,101		$ 9,150		$ 8,055		$ 8,809		$ 7,253		$ 7,605		$ 9,862		$ 7,322		$ 34,115	$ 32,042	$ 31,840
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member]
Net sales(1):
Net sales	[2]																	$ 34,115	$ 32,042	$ 31,840
Concentration Risk, Percentage	[2]																	100.00%	100.00%	100.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] | UNITED STATES
Net sales(1):
Net sales	[2]																	$ 26,348	$ 22,978	$ 22,711
Concentration Risk, Percentage	[2]																	77.00%	72.00%	71.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] | Asia Pacific [Member]
Net sales(1):
Net sales	[2]																	$ 3,238	$ 4,017	$ 4,130
Concentration Risk, Percentage	[2]																	9.00%	13.00%	13.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] | Europe [Member]
Net sales(1):
Net sales	[2]																	$ 2,540	$ 3,652	$ 2,990
Concentration Risk, Percentage	[2]																	8.00%	11.00%	9.00%
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member] | Other Countries [Member]
Net sales(1):
Net sales	[2]																	$ 1,989	$ 1,395	$ 2,009
Concentration Risk, Percentage	[2]																	6.00%	4.00%	7.00%
[1]	The first, second, third and fourth quarters of 2018 include abnormal production costs of $9,000, $75,000, $4,000 and $720,000, respectively. The first, second, third and fourth quarters of 2017 include abnormal production costs of $28,000, $73,000, $148,000 and $5,000, respectively.
[2]	Net sales are attributed to countries based on location of customer.

Note 14 - Income Taxes (Details

Note 14 - Income Taxes (Details Textual) - USD ($)	Dec. 22, 2017	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%		30.79%	34.00%	34.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 1,200,000
Deferred Tax Assets, Valuation Allowance, Total		$ 2,158,000		$ 2,158,000	$ 3,722,000	$ 3,564,000
Tax Credit Carryforward, Amount		$ 28,000		$ 28,000
Alternative Minimum Tax, Sequestration Rate		6.60%		6.60%
Adjusted Alternative Minimum Tax Credit Carryforward		$ 8,000		$ 8,000
Alternative Minimum Tax Refundable		112,000		112,000
Operating Loss Carryforwards, Total		12,004,000		12,004,000
California Franchise Tax Board [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		746,000		746,000
Hawaii Department of Taxation [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		6,532,000		6,532,000
AMT [Member]
Tax Credit Carryforward, Amount		$ 120,000		$ 120,000
Taxable Year Beginning After 2017 and Before 2022 [Member]
Alternative Minimum Tax Refund Percentage		50.00%		50.00%
taxable years beginning in 2021 [Member]
Alternative Minimum Tax Refund Percentage		100.00%		100.00%
Latest Tax Year [Member] | California Franchise Tax Board [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Expiration Date				Mar. 31, 2037
Latest Tax Year [Member] | Hawaii Department of Taxation [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Expiration Date				Mar. 31, 2037
Earliest Tax Year [Member] | California Franchise Tax Board [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Expiration Date				Mar. 31, 2030
Earliest Tax Year [Member] | Hawaii Department of Taxation [Member] | State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Expiration Date				Mar. 31, 2030
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 Income Tax Benefit (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Current:
Federal	$ 112	$ (2)	$ (1)
State	(2)	(3)	23
Total current benefit (expense)	110	(5)	22
Deferred:
Federal			(3,027)
State			(323)
Total deferred expense			(3,350)
Income tax benefit (expense)	$ 110	$ (5)	$ (3,328)

Note 14 - Income Taxes - Reconc

Note 14 - Income Taxes - Reconciliation of the Amount of Income Taxes Computed at the Federal Statutory Rate to the Amount Reflected in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Tax provision at federal statutory income tax rate	$ (282)	$ 411	$ 363
Stock based compensation	(11)	(281)	(128)
Decrease (increase) in valuation allowance	1,565	(158)	(3,564)
State income taxes benefit (expense), net of federal income tax effect	(36)	49	25
State rate adjustment	3	(1)	1
AMT Credit	112
Tax Cuts and Jobs Act	(1,244)
Other, net	3	(25)	(25)
Income tax benefit (expense)	$ 110	$ (5)	$ (3,328)

Note 14 - Income Taxes - Effect

Note 14 - Income Taxes - Effects of Temporary Differences Related to Various Assets, Liabilities and Carry Forwards That Give Rise to Deferred Tax Assets and Liabilities (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Deferred tax assets:
Net operating loss carry forwards	$ 2,903,000	$ 4,325,000
Inventory	295,000	405,000
Compensation accrual	153,000	187,000
Tax credit carry forwards	36,000	147,000
Other	22,000	40,000
Gross deferred tax assets	3,409,000	5,104,000
Less valuation allowance	(2,158,000)	(3,722,000)	$ (3,564,000)
Net deferred tax assets	1,251,000	1,382,000
Deferred tax liability- Depreciation and amortization	(1,251,000)	(1,382,000)
Net deferred tax assets	$ 0	$ 0

Note 14 - Income Taxes - Net Op

Note 14 - Income Taxes - Net Operating Loss Carry Forwards and Tax Credit Carry Forwards Available to Offset Future Federal Income Tax (Details) $ in Thousands	Mar. 31, 2018USD ($)
Operating Loss Carryforwards, Total	$ 12,004
Tax Credit Carryforward, Amount	28
Expiration Tax Year 2020 [Member]
Operating Loss Carryforwards, Total
Tax Credit Carryforward, Amount	8
Expiration Tax Period 2021 [Member]
Operating Loss Carryforwards, Total
Tax Credit Carryforward, Amount	2
Expiration Tax Year 2022 [Member]
Operating Loss Carryforwards, Total	2,839
Tax Credit Carryforward, Amount
Expiration Tax Year 2023 [Member]
Operating Loss Carryforwards, Total	1,863
Tax Credit Carryforward, Amount	1
Expiration Tax Year 2026 [Member]
Operating Loss Carryforwards, Total	159
Tax Credit Carryforward, Amount
Expiration Tax Year 2027 [Member]
Operating Loss Carryforwards, Total	2,665
Tax Credit Carryforward, Amount	1
ExpirationTax Year 2028 [Member]
Operating Loss Carryforwards, Total	1,612
Tax Credit Carryforward, Amount	16
Expiration Tax Year 2031 [Member]
Operating Loss Carryforwards, Total	389
Tax Credit Carryforward, Amount
Expiration Tax Year 2032 [Member]
Operating Loss Carryforwards, Total	44
Tax Credit Carryforward, Amount
Expiration Tax Year 2033 [Member]
Operating Loss Carryforwards, Total	76
Tax Credit Carryforward, Amount
Expiration Tax Year 2034 [Member]
Operating Loss Carryforwards, Total	392
Tax Credit Carryforward, Amount
Expiration Tax Year 2035 [Member]
Operating Loss Carryforwards, Total	18
Tax Credit Carryforward, Amount
Expiration Tax Year 2037 [Member]
Operating Loss Carryforwards, Total	1,681
Tax Credit Carryforward, Amount
Indefinite Period [Member]
Operating Loss Carryforwards, Total	266
Tax Credit Carryforward, Amount

Note 14 - Income Taxes - Refund

Note 14 - Income Taxes - Refundable Alternative Minimum Tax Credit Carryforwards (Details)	Mar. 31, 2018USD ($)
Refundable Alternative Minimum Tax Credit Carryforward	$ 112,000
Tax Year 2018 [Member]
Refundable Alternative Minimum Tax Credit Carryforward	56,000
Tax Year 2019 [Member]
Refundable Alternative Minimum Tax Credit Carryforward	28,000
Tax Year 2020 [Member]
Refundable Alternative Minimum Tax Credit Carryforward	14,000
Tax Year 2021 [Member]
Refundable Alternative Minimum Tax Credit Carryforward	7,000
Tax Year 2022 [Member]
Refundable Alternative Minimum Tax Credit Carryforward	$ 7,000

Note 14 - Income taxes - Open T

Note 14 - Income taxes - Open Tax Years and Jurisdictions That the Company Used In Its Evaluation of Tax Positions (Details)	12 Months Ended
	Mar. 31, 2018
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Open tax year	2,014
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Latest Tax Year [Member]
Open tax year	2,018
State and Local Jurisdiction [Member] | Hawaii Department of Taxation [Member] | Earliest Tax Year [Member]
Open tax year	2,014
State and Local Jurisdiction [Member] | Hawaii Department of Taxation [Member] | Latest Tax Year [Member]
Open tax year	2,018
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] | Earliest Tax Year [Member]
Open tax year	2,013
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] | Latest Tax Year [Member]
Open tax year	2,018

Note 15 - Selected Quarterly 70

Note 15 - Selected Quarterly Financial Data (Unaudited) (Details Textual) - USD ($)	3 Months Ended								12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Inventory Abnormal Production Costs	$ 720,000	$ 4,000	$ 75,000	$ 9,000	$ 5,000	$ 148,000	$ 73,000	$ 28,000	$ 538,000	$ 120,000	$ 395,000

Note 15 - Selected Quarterly 71

Note 15 - Selected Quarterly Financial Data (Unaudited) - Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Mar. 31, 2018	[1]	Dec. 31, 2017	[1]	Sep. 30, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	[1]	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Net sales	$ 8,101		$ 9,150		$ 8,055		$ 8,809		$ 7,253		$ 7,605		$ 9,862		$ 7,322		$ 34,115	$ 32,042	$ 31,840
Gross profit	1,908		4,240		3,620		3,603		2,661		2,857		3,885		2,821		13,371	12,224	11,866
Net income (loss)	$ (1,058)		$ 1,107		$ 475		$ 501		$ (274)		$ (349)		$ 99		$ (691)		$ 1,025	$ (1,215)	$ (4,395)
Net income (loss) per share
Basic and diluted loss per share (in dollars per share)	$ (0.18)		$ 0.19		$ 0.08		$ 0.09		$ (0.05)		$ (0.06)		$ 0.02		$ (0.12)		$ 0.18	$ (0.21)	$ (0.79)
Net sales	$ 8,101		$ 9,150		$ 8,055		$ 8,809		$ 7,253		$ 7,605		$ 9,862		$ 7,322		$ 34,115	$ 32,042	$ 31,840
Gross profit	1,908		4,240		3,620		3,603		2,661		2,857		3,885		2,821		13,371	12,224	11,866
Net income (loss)	$ (1,058)		$ 1,107		$ 475		$ 501		$ (274)		$ (349)		$ 99		$ (691)		$ 1,025	$ (1,215)	$ (4,395)
[1]	The first, second, third and fourth quarters of 2018 include abnormal production costs of $9,000, $75,000, $4,000 and $720,000, respectively. The first, second, third and fourth quarters of 2017 include abnormal production costs of $28,000, $73,000, $148,000 and $5,000, respectively.

Schedule II - Valuation and Q72

Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - SEC Schedule, 12-09, Allowance, Credit Loss [Member] - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Balance at Beginning of Year	$ 49	$ 136	$ 6
Additions Charged to Costs and Expense			130
Additions Charged to Other Accounts
Deductions	22	87
Balance at End of Year	$ 27	$ 49	$ 136