Common shares earned percentage of initial target number shares awarded.

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- Definition

Common Shares Earned Percentage Of Initial Target Number Shares Awarded, Next Fiscal Year

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- Definition

Common shares earned pursuant to award.

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- Definition

Outstanding share awards earned and issued at greater than the target number of shares.

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No definition available.

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Outstanding Share Awards Earned And Issued At Greater Than Target Number Of Shares, Next Fiscal Year

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Qualifying for the Award Period

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No definition available.

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- Definition

Share Based Compensation, Number Of Tranches

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation (Details) - 2016 Plan $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021 USD ($) shares	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($) tranche $ / shares shares	Mar. 31, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate number of shares that may be awarded (in shares)	1,196,000		1,196,000
Exercise period for shares awarded under plan			10 years
Outstanding share awards that may be awarded (in shares)	442,000		442,000
Outstanding share awards earned and issued at greater than the target number of shares			200.00%
Outstanding share awards earned and issued at greater than the target number of shares next fiscal year			150.00%
Share-based compensation expense (benefit) \| $	$ 150	$ 70	$ 293	$ 225
Total unrecognized compensation cost related to performance and restricted shares \| $	$ 778		$ 778
Period of recognized compensation cost (in years)			1 year 6 months
Key employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches in award \| tranche			2
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period (in years)			3 years
Performance shares \| Key employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted in period (in shares)			71,000
Performance shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares earned pursuant to award (in shares)			0
Performance shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares earned as percentage of initial target number shares awarded			200.00%
Common shares earned as percentage of initial target number shares awarded next fiscal year			150.00%
Restricted shares \| Key employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted in period (in shares)			49,000
Restricted shares \| Non-employee directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			1 year
Shares granted in period (in shares)			30,000
Shares granted in period, grant date fair value (in dollars per share) \| $ / shares			$ 9.08
Vested in period (in shares)			57,000
Restricted shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			1 year
Restricted shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			3 years
Performance and Restricted Shares \| Key employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			3 years
Shares granted in period (in shares)			120,000
Shares granted in period, grant date fair value (in dollars per share) \| $ / shares			$ 3.74