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v3.8.0.1

Significant Customer and Other Information (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Mar. 31, 2017
Sales [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 100.00% | 100.00% | 100.00% | 100.00% |
Sales [Member] | Customer A [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 48.00% | 45.00% | 44.00% | 48.00% |
Sales [Member] | Customer B [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 25.00% | 21.00% | 25.00% | 18.00% |
Sales [Member] | Customer C [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 14.00% | 19.00% | 15.00% | 19.00% |
Sales [Member] | Customer D [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 3.00% | 4.00% | 5.00% | 4.00% |
Sales [Member] | Rotating Electrical Products [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 76.00% | 80.00% | 77.00% | 76.00% |
Sales [Member] | Wheel Hub Products [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 18.00% | 20.00% | 18.00% | 21.00% |
Sales [Member] | Brake Master Cylinders Products [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 3.00% | 3.00% | 3.00% | 4.00% |
Sales [Member] | Other Products [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 3.00% | (3.00%) | 2.00% | (1.00%) |
Accounts Receivable - Trade [Member] | Customer A [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 31.00% |  | 33.00%
Accounts Receivable - Trade [Member] | Customer B [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 15.00% |  | 18.00%
Accounts Receivable - Trade [Member] | Customer C [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 17.00% |  | 12.00%
Accounts Receivable - Trade [Member] | Customer D [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 17.00% |  | 16.00%

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