Note 8 - Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Salaries, wages and related items	$ 6,431,517	$ 5,398,877
Profit sharing and bonus	1,201,440	413,522
Business Combination, Contingent Consideration, Liability, Current	1,500,000
Health insurance	370,806	423,680
Warranty reserves	109,490	164,240
Asset retirement obligation		562,500
Claims reserve	446,529	308,528
Customer discounts	263,957
Taxes	157,739	508,615
Other deposits	590,000	325,000
Other	672,495	567,853
Total	$ 11,743,973	$ 8,672,815

The current position of claims reserve.

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The current portion of customer discount.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of the obligations incurred through that date and payable for employees' services provided. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Amount of obligations incurred for employer-related costs classified as other, payable within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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