Employee Benefit Plans (Narrative) (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jan. 01, 2019 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|
| 401(k) [Member] | |||
| Defined Contribution Plan [Line Items] | |||
| Company matching contribution rate | 100.00% | ||
| Company matching contribution, percent of compensation | 4.00% | ||
| Company contributions | $ 207,000 | $ 119,000 | |
| Foreign Postretirement Benefit Plan [Member] | |||
| Defined Contribution Plan [Line Items] | |||
| Company matching contribution, percent of compensation | 4.00% | 3.00% | |
| Company contributions | $ 40,000 | $ 33,000 | |
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|