Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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Number of shares that have been repurchased during the period and are being held in treasury.

+ References

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

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Stockholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended		3 Months Ended		0 Months Ended
	Mar. 26, 2015	Feb. 27, 2015	Mar. 31, 2015	Mar. 31, 2014	May 07, 2015
Dividends Payable [Line Items]
Cash dividend per common share (in dollars per share)		$ 0.13	$ 0.13	$ 0.11
Dividend declared and paid, common shares	$ 3.0us-gaap_PaymentsOfDividendsCommonStock		$ 3.1us-gaap_PaymentsOfDividendsCommonStock	$ 2.6us-gaap_PaymentsOfDividendsCommonStock
Common stock available for future share repurchases, amount			17.7
Common stock repurchased, number of shares repurchased			48,892us-gaap_TreasuryStockSharesAcquired	82,600us-gaap_TreasuryStockSharesAcquired
Common stock repurchased, average price per share (in dollars per share)			$ 61.36	$ 36.18
Common stock repurchased, total repurchase costs			$ 3.0	$ 3.0
Subsequent Event
Dividends Payable [Line Items]
Cash dividend per common share (in dollars per share)					$ 0.13