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Note 1. Business Description and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jun. 30, 2020
Summary of Significant Accounting Policies [Abstract] |
Schedules of Concentration of Risk, by Risk Factor | A summary of significant customers’ net sales and trade receivables as a percentage of consolidated net sales and consolidated trade receivables is as follows:
| Net Sales |  | Trade Receivables
| Year Ended June 30 |  | As of June 30
| 2020 |  | 2019 |  | 2018 |  | 2020 |  | 2019
Philips | 16% |  | 14% |  | 13% |  | * |  | *
ZF | * |  | 12% |  | 15% |  | * |  | 14%
Nexteer Automotive | 14% |  | 12% |  | 13% |  | 17% |  | 16%
Regal Beloit Corporation | * |  | * |  | * |  | * |  | 10%
* amount is less than 10% of total |  |  |  |  |  |  |  |  |

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