Debt instrument maturity period.

No definition available.

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- Definition

Debt.

+ References

No definition available.

+ Details

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- Definition

Effective interest rate after cash flow hedge.

+ References

No definition available.

+ Details

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- Definition

Effective interest rate before cash flow hedge.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility additional borrowings capacity.

+ References

No definition available.

+ Details

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- Definition

Notional amount of senior notes interest rate cash flow hedge derivatives.

+ References

No definition available.

+ Details

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- Definition

Uncommitted line of credit facility expiration date.

+ References

No definition available.

+ Details

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- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB

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-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

+ Details

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Weighted average interest rate of short-term debt outstanding.

+ References

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Debt (Details Textuals) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
Debt (Details Textuals) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Mar. 31, 2006
Debt (Textuals)
Debt issuance costs					$ 0.7	$ 1.4
Debt Instrument, Covenant Compliance					As of September 30, 2015 the Company was in compliance with the financial covenants in its debt agreements.
Senior Notes [Member]
Debt (Textuals)
Issuance of Senior Notes, Principal amount								$ 300.0
Notional Amount Of Senior Notes Interest Rate Cash Flow Hedge Derivatives								$ 200.0
Debt, Weighted Average Interest Rate								5.50%
Effective interest rate before cash flow hedge								5.50%
Effective interest rate after cash flow hedge								5.36%
Repayments of Long-term Debt				$ 75.0
Industrial development revenue bonds [Member]
Debt (Textuals)
Debt, Weighted Average Interest Rate			0.34%		0.34%		0.27%
Repayments of Long-term Debt			$ 7.5
Bond maturity period					20 years
Term Loan [Member]
Debt (Textuals)
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases			$ 230.0		$ 230.0
Weighted average interest rate on credit facility borrowings outstanding			1.75%		1.75%
Line of credit facility description of variable rate basis					LIBOR
Revolving Credit Facility [Member]
Debt (Textuals)
Amount available under credit facility			$ 348.9		$ 348.9
Weighted average interest rate on credit facility borrowings outstanding			1.57%		1.57%		1.69%
Line of credit facility description of variable rate basis					LIBOR
Line of Credit Facility, Current Borrowing Capacity			$ 520.0		$ 520.0		$ 500.0
Increase in borrowing limits under credit facility agreement			250.0		250.0
Swing Line Sub-Facility [Member]
Debt (Textuals)
Increase in borrowing limits under credit facility agreement			50.0		50.0
Uncommitted Line of Credit [Member]
Debt (Textuals)
Borrowing limit of short term uncommitted line of credit			$ 119.0		$ 119.0
Weighted average interest rate on outstanding borrowings			2.95%		2.95%		2.96%
Amount available under credit facility			$ 50.6		$ 50.6
Maturity time of short term uncommitted lines					less than one year
Scenario, Forecast [Member] \| Senior Notes Due 2016 [Member]
Debt (Textuals)
Debt Instrument, Periodic Payment		$ 175.0
Scenario, Forecast [Member] \| Senior Notes Due 2018 [Member]
Debt (Textuals)
Debt Instrument, Periodic Payment	$ 50.0