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Significant Customer and Other Information | 12 Months Ended
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Mar. 31, 2018
Significant Customer and Other Information [Abstract] |
Significant Customer and Other Information | 16. Significant Customer and Other Information Significant Customer Concentrations The Company’s largest customers accounted for the following total percentage of net sales:
|  | Years Ended March 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Customer A |  |  | 41 | % |  |  | 44 | % |  |  | 48 | %
Customer B |  |  | 24 | % |  |  | 20 | % |  |  | 18 | %
Customer C |  |  | 19 | % |  |  | 19 | % |  |  | 21 | %
Customer D |  |  | 4 | % |  |  | 4 | % |  |  | 3 | %
The Company’s largest customers accounted for the following total percentage of accounts receivable — trade at March 31:
|  | 2018 |  |  | 2017 |
Customer A |  |  | 36 | % |  |  | 33 | %
Customer B |  |  | 16 | % |  |  | 18 | %
Customer C |  |  | 22 | % |  |  | 12 | %
Customer D |  |  | 5 | % |  |  | 16 | %
Geographic and Product Information The Company’s products are predominantly sold in the U.S. and accounted for the following total percentage of net sales:
|  | Years Ended March 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Rotating electrical products |  |  | 78 | % |  |  | 78 | % |  |  | 78 | %
Wheel hub products |  |  | 17 | % |  |  | 19 | % |  |  | 20 | %
Brake master cylinders products |  |  | 2 | % |  |  | 3 | % |  |  | 2 | %
Other products |  |  | 3 | % |  |  | - | % |  |  | - | %
|  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
Significant Supplier Concentrations No suppliers accounted for more than 10% of the Company’s inventory purchases for the years ended March 31, 2018, 2017 and 2016.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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