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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Components of Deferred Profit | The components of deferred profit are as follows (in thousands):
| September 30,
| 2018 |  | 2017
Deferred revenue | $ | 5,616 |  |  | $ | 6,822 |
Deferred costs | 2,545 |  |  | 2,741 |
Deferred profit | $ | 3,071 |  |  | $ | 4,081 |
Schedule of Product Warranty Liability | The following is a summary of activity in accrued warranty expense (in thousands):
| Years Ended September 30,
| 2018 |  | 2017 |  | 2016
Beginning balance | $ | 1,254 |  |  | $ | 795 |  |  | $ | 793 |
Additions for warranties issued during the period | 1,567 |  |  | 1,723 |  |  | 1,074 |
Reductions in the liability for payments made under the warranty | (910 | ) |  | (414 | ) |  | (832 | )
Changes related to pre-existing warranties | (865 | ) |  | (872 | ) |  | (250 | )
Currency translation adjustment | (6 | ) |  | 22 |  |  | 10 |
Ending balance | $ | 1,040 |  |  | $ | 1,254 |  |  | $ | 795 |
Research and Development Expense | The following is a summary of our research, development and engineering expense (in thousands):
| Years Ended September 30,
| 2018 |  | 2017 |  | 2016
Research, development and engineering | $ | 9,237 |  |  | $ | 7,001 |  |  | $ | 9,535 |
Grants earned | (1,437 | ) |  | (629 | ) |  | (1,531 | )
Net research, development and engineering | $ | 7,800 |  |  | $ | 6,372 |  |  | $ | 8,004 |

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- Definition Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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