Minimum percent of outstanding common stock granted to employees.

No definition available.

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- Definition

Options award expiry period for employees owning ten percent or more shares.

+ References

No definition available.

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- Definition

Restricted stock restriction period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options grants in period grant date fair value.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award expiration month and year.

+ References

No definition available.

+ Details

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 718
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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

+ Details

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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).

+ References

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

+ References

+ Details

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

+ Details

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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.

+ References

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Number of share options (or share units) exercised during the current period.

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Stockholders' Equity - Additional Information (Details) - USD ($)	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Oct. 01, 2015	Sep. 30, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value of the restricted stock	$ 15.13	$ 21.12	$ 14.84
Stock options outstanding	190,100	201,800	159,000		89,700
Nonqualified stock options exercised	7,700	4,000	0
Intrinsic value of nonqualified stock options exercised	$ 41,000	$ 45,000
Stock-based compensation expense	2,300,000	$ 5,700,000	$ 5,200,000
Unrecognized compensation expense	$ 100,000
Expected period for recognition of unrecognized compensation expense	9 months 18 days
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense	$ 3,900,000
Expected period for recognition of unrecognized compensation expense	2 years 7 months 6 days
1997 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance	2,250,000
Expiration date	2017-11
Common stock available for issuance	0
Stock options outstanding				89,700
2014 Long Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance	1,500,000
Percent of outstanding common stock granted to employees	10.00%
Exercise price of stock option granted to employees	110.00%
Common stock available for issuance	691,388
2014 Long Term Incentive Plan \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued	176,450
Weighted average grant date fair value of the restricted stock	$ 15.13
Grant date fair value of restricted stock	$ 2,700,000
Restricted stock restriction period	4 years
2014 Long Term Incentive Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options have a term	10 years
Outstanding shares of common stock granted to employees expiry term	5 years