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Major Customers | 9 Months Ended
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Dec. 31, 2012
Major Customers [Abstract] |
Major Customers | 7. Major Customers The Company's largest customers accounted for the following total percentage of net sales and accounts receivable — trade:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | December 31, |  |  | December 31, |
Sales |  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Customer A |  |  | 37 | % |  |  | 48 | % |  |  | 37 | % |  |  | 45 | %
Customer B |  |  | 17 | % |  |  | 11 | % |  |  | 16 | % |  |  | 9 | %
Customer C (1) |  |  | 14 | % |  |  | 12 | % |  |  | 19 | % |  |  | 13 | %
Accounts receivable - trade |  | December 31, 2012 |  |  | March 31, 2012 |
Customer A |  |  | 31 | % |  |  | 31 | %
Customer B |  |  | 5 | % |  |  | 8 | %
Customer C (1) |  |  | 9 | % |  |  | 21 | %
(1) The Company discontinued supplying its undercar products to customer C but has retained the rotating electrical product line sales to this customer. The percentage of net sales for this customer for the three and nine months ended December 31, 2012 excludes the recognition of approximately $50,783,000 in revenue from the reduction in the Company's obligation to provide a credit for this major customer's Remanufactured Cores. The Company's largest suppliers accounted for the following total percentage of raw materials purchases:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | December 31, |  |  | December 31, |
Significant supplier purchases |  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Supplier A |  |  | 4 | % |  |  | 7 | % |  |  | 14 | % |  |  | 11 | %

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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 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15A -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 21, 22, 24 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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