No definition available.

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- Definition

Represents the number of banks for maintenance of cash balances.

+ References

No definition available.

+ Details

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- Definition

Represents the number of major customers of the entity on an annual basis.

+ References

No definition available.

+ Details

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- Definition

Represents the number of major customers of the entity.

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No definition available.

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- Definition

Represents the number of major suppliers of the entity.

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No definition available.

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- 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.

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No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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Concentrations (Details) $ in Millions	12 Months Ended
Concentrations (Details) $ in Millions	Sep. 30, 2019 USD ($) customer item	Sep. 30, 2018 USD ($) customer item	Sep. 30, 2017 USD ($) customer
Concentration of Credit Risk
Concentration of Credit Risk
Number of banks for maintenance of cash balances \| item	2
Net sales \| Major Customers and Products
Concentrations
Concentration of risk (as a percent)	53.00%	48.00%	54.00%
Number of major customers \| customer	5	5	5
Number of major annual customers \| customer			3
Accounts receivable and contract assets \| $	$ 1.3	$ 1.4	$ 1.3
Net sales \| Major Customers and Products \| Sierra Nevada
Concentrations
Concentration of risk (as a percent)			16.00%
Net sales \| Major Customers and Products \| Pilatus
Concentrations
Concentration of risk (as a percent)	25.00%	20.00%	12.00%
Net sales \| Major Customers and Products \| DHL
Concentrations
Concentration of risk (as a percent)			10.00%
Net sales \| Major Customers and Products \| Government contractors and Agencies
Concentrations
Concentration of risk (as a percent)	20.00%	32.00%	53.00%
Net sales \| Major Products \| FPDS
Concentrations
Concentration of risk (as a percent)	90.00%	75.00%	89.00%
Net sales \| Major Products \| Air data systems and components
Concentrations
Concentration of risk (as a percent)	10.00%	25.00%	11.00%
Inventory \| Major Suppliers
Concentrations
Concentration of risk (as a percent)	23.40%	11.00%
Number of major suppliers \| item	2	1