Employee Stock Option Program (EOP), Authorized Shares

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Payout Percent

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

+ References

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-Publisher FASB
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- Definition

Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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-Publisher FASB
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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

+ References

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- Definition

Number of new stock issued during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Stock-based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			36 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2018	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock reserved for issuance under plan	2,600,000			2,600,000
Number of shares of common stock available for future grants	2,100,000			2,100,000
Intrinsic value of stock options exercisable	$ 0.1			$ 0.1
Intrinsic value of stock options vested and expected to vest	0.1			0.1
Intrinsic value of stock options outstanding	$ 0.1			$ 0.1
Employee stock option program (EOP), authorized shares (in shares)	100,000			100,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period to recognize remaining cost	1 year 9 months 7 days
Unrecognized compensation cost	$ 0.2	$ 0.3		$ 0.2
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards granted in period (in shares)	25,230
Award vesting period	3 years
Employee Stock Option \| Employee purchase plan (EOP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards granted in period (in shares)	3,950
Employee purchase plan (EOP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	2 years
Performance-based restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share awards to be vested	644,785	668,766	448,693	644,785	252,022
Estimated fair value of nonvested stock (in dollars per share)	$ 22.40	$ 13.60	$ 15.43
Performance-based restricted stock \| 2016 Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards granted in period (in shares)	165,085
Performance share awards to be vested	309,843			309,843
Compensation cost related to performance based awards	$ 1.3	$ 2.3	$ 1.0	$ 4.8
Unrecognized compensation cost	$ 0.2			$ 0.2
Award vesting period	3 years
Estimated fair value of nonvested stock (in dollars per share)	$ 22.40
Performance-based restricted stock \| 2016 Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage	0.00%
Performance-based restricted stock \| 2016 Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage	175.00%
Total Shareholder Return Performance Share \| 2016 Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage	20.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period to recognize remaining cost	1 year 9 months 11 days
Performance share awards to be vested	1,076,568	1,540,947	1,255,817	1,076,568	956,283
Unrecognized compensation cost	$ 8.8	$ 8.8		$ 8.8
Estimated fair value of nonvested stock (in dollars per share)	$ 20.26	$ 13.04	$ 14.69
Stock options \| 2016 Time-based Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards granted in period (in shares)	277,165