Covenant, Maximum Leverage Ratio.

No definition available.

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- Definition

Covenant, Minimum Interest Coverage Ratio.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument Payment Required On Tenth Anniversary.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Interest Coverage Ratio.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Leverage Ratio.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- 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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Period Type:	duration

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The amount of cash paid for interest during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

+ Details

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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Balance Type:	credit
Period Type:	instant

- 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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Balance Type:	credit
Period Type:	instant

- 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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Details

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- Details

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- Details

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Financial Instruments (Narrative) (Details) $ in Millions		3 Months Ended	12 Months Ended
Financial Instruments (Narrative) (Details) $ in Millions	Mar. 16, 2016	Mar. 31, 2016 USD ($)	Dec. 31, 2014 USD ($)	Apr. 08, 2016 USD ($)	Dec. 31, 2015	Jul. 16, 2015 USD ($)	Jun. 18, 2015 USD ($)	May. 20, 2013 USD ($)
Debt Instrument [Line Items]
Interest paid		$ 14.8	$ 13.0
Maximum leverage ratio allowed		3.50
Minimum interest coverage ratio required		3.00
Leverage ratio		2.57
Interest coverage ratio		13.59
Private Placement, Notes [Member]
Debt Instrument [Line Items]
Interest rate		6.84%			6.84%
Maturity date		Oct. 25, 2017
Payment required on October 25, 2017		$ 50.0
Fair value of long-term debt		54.3
Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Amount of credit facility							$ 400.0
Amount of credit facility outstanding		205.0
Additional amount that can be borrowed on facility		$ 195.0
LIBOR spread	1.375%
Interest rate at end of period		2.34%			2.27%
LIBOR rate	0.45%
Revolving Credit Agreement [Member] \| Interest Rate Swap [Member]
Debt Instrument [Line Items]
Notional amount						$ 120.0		$ 110.0
Fixed interest rate in swap	2.789%					2.43%		1.414%
LIBOR rate	0.45%					0.35%
Revolving Credit Agreement [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Amount of credit facility				$ 550.0
Revolving Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
LIBOR spread		1.25%
Revolving Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
LIBOR spread		1.75%