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Schedule Of Share Based Compensation Stock Options Activity (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Unvested Beginning Balance	0
Shares, Granted	59,542
Shares, Vested	0
Shares, Forfeited	0
Share, Unvested Ending Balance	59,542
Shares, Exerciseable	0
Weighted-Average Exercise Price, Unvested Beginning Balance	$ 0
Weighted-Average Exercise Price, Grant	$ 26.52
Weighted-Average Exercise Price, Vested	$ 0
Weighted-Average Exercise Price, Forfeited	$ 0
Weighted-Average Exercise Price, Unvested Ending Balance	$ 26.52
Weighted-Average Exercise Price, Exerciseable	$ 0
Weighted-Average Remaining Contractual Life (Yrs),Unvested	9 years 10 months 10 days
Weighted-Average Remaining Contractual Life (Yrs), Exerciseable	0 years
Aggregate Intrinsic Value, Unvested	$ 153,023
Aggregate Intrinsic Value, Exercisable	$ 0

X

- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Vested Weighted Average Exercise Price

+ References

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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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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-Publisher FASB

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-Topic 718

-SubTopic 10

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-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

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

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Number of options vested.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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