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CONCENTRATIONS OF CREDIT RISK AND MAJOR CUSTOMERS (Tables)

12 Months Ended

Mar. 31, 2018

Risks and Uncertainties [Abstract]

Schedule of accounts receivable

Accounts receivable from the three customers with the largest receivable balances as of March 31, 2017 and 2018 are as follows:

		Percentage of
			accounts receivable
			2017				2018
			%				%
Customer A			47.9				54.9
Customer B			13.0				9.0
Customer C			12.0				9.0
Three largest receivable balances			72.9				72.9

Schedule of Revenue by Major Customers by Reporting Segments

A substantial percentage of the Group’s sales are made to four customers and are typically on an open account basis. Customers accounting for 10% or more of total net sales in any of the years ended March 31, 2016, 2017 and 2018 are as follows:

		Year ended March 31,
		2016				2017				2018
		%				%				%
Customer A (note a)			44.1				46.0				51.4
Customer B (note a)			N/A				10.7				15.8
Customer C (note b)			12.2				11.6				10.8
Customer D (note b)			14.0				11.0				N/A
			70.3				79.3				78.0

Notes:

(a) Sales to this customer were reported in both of the Metal Stamping and Mechanical OEM and Electric OEM operating segments.

(b) Sales to this customer were reported in the Electric OEM operating segment.

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Tabular disclosure of accounts receivable from the three customers with the largest receivable.

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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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