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v3.10.0.1

Significant Customer and Other Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2018
Sales [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 100.00% | 100.00% | 100.00% | 100.00% |
Sales [Member] | Customer A [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 33.00% | 41.00% | 36.00% | 43.00% |
Sales [Member] | Customer B [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 20.00% | 27.00% | 23.00% | 26.00% |
Sales [Member] | Customer C [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 26.00% | 18.00% | 23.00% | 16.00% |
Sales [Member] | Rotating Electrical Products [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 81.00% | 77.00% | 79.00% | 77.00% |
Sales [Member] | Wheel Hub Products [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 14.00% | 18.00% | 15.00% | 18.00% |
Sales [Member] | Brake Master Cylinders Products [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 1.00% | 2.00% | 2.00% | 3.00% |
Sales [Member] | Other Products [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage | 4.00% | 3.00% | 4.00% | 2.00% |
Accounts Receivable - Trade [Member] | Customer A [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage |  |  | 29.00% |  | 36.00%
Accounts Receivable - Trade [Member] | Customer B [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage |  |  | 13.00% |  | 16.00%
Accounts Receivable - Trade [Member] | Customer C [Member] |  |  |  |  |
Concentration Risk [Abstract] |  |  |  |  |
Concentration risk percentage |  |  | 29.00% |  | 22.00%

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