Restricted Stock Units Issued (Detail) (Restricted Stock, USD $)	0 Months Ended	3 Months Ended
Jan. 26, 2015	Mar. 31, 2015
Restricted Stock
Restricted Stock Units
Beginning Restricted Stock Units		23,576
Restricted Stock Units Granted	40,010	0
Dividend Equivalents Earned		243
Restricted Stock Units Settled		0
Ending Restricted Stock Units		23,819
Weighted-Average Stock Price
Beginning Restricted Stock Units		$ 29.90
Restricted Stock Units Granted		$ 0
Dividend Equivalents Earned		$ 33.98
Restricted Stock Units Settled		$ 0
Ending Restricted Stock Units		$ 29.94

The number of grants made 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).

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)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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