Significant Customer and Other Information (Details)
|
3 Months Ended |
6 Months Ended |
12 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Mar. 31, 2016 |
| Sales [Member] |
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| Concentration Risk [Line Items] |
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|
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| Concentration risk percentage |
100.00%
|
100.00%
|
100.00%
|
100.00%
|
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| Sales [Member] | Rotating Electrical Products [Member] |
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| Concentration Risk [Line Items] |
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|
|
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| Concentration risk percentage |
80.00%
|
85.00%
|
76.00%
|
81.00%
|
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| Sales [Member] | Wheel Hub Products [Member] |
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| Concentration Risk [Line Items] |
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| Concentration risk percentage |
20.00%
|
19.00%
|
21.00%
|
18.00%
|
|
| Sales [Member] | Brake Master Cylinders Products [Member] |
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| Concentration Risk [Line Items] |
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| Concentration risk percentage |
3.00%
|
(4.00%)
|
4.00%
|
1.00%
|
|
| Sales [Member] | Other Products [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
|
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| Concentration risk percentage |
(3.00%)
|
0.00%
|
(1.00%)
|
0.00%
|
|
| Sales [Member] | Customer A [Member] |
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| Concentration Risk [Line Items] |
|
|
|
|
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| Concentration risk percentage |
45.00%
|
46.00%
|
48.00%
|
48.00%
|
|
| Sales [Member] | Customer B [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
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| Concentration risk percentage |
21.00%
|
21.00%
|
18.00%
|
20.00%
|
|
| Sales [Member] | Customer C [Member] |
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| Concentration Risk [Line Items] |
|
|
|
|
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| Concentration risk percentage |
19.00%
|
21.00%
|
19.00%
|
19.00%
|
|
| Accounts Receivable - Trade [Member] | Customer A [Member] |
|
|
|
|
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| Concentration Risk [Line Items] |
|
|
|
|
|
| Concentration risk percentage |
|
|
52.00%
|
|
37.00%
|
| Accounts Receivable - Trade [Member] | Customer B [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
|
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| Concentration risk percentage |
|
|
8.00%
|
|
17.00%
|
| Accounts Receivable - Trade [Member] | Customer C [Member] |
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|
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| Concentration Risk [Line Items] |
|
|
|
|
|
| Concentration risk percentage |
|
|
12.00%
|
|
15.00%
|