Employee Benefit Plans (Narrative) (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Defined Benefit Plan Disclosure [Line Items]
Contributions to profit sharing retirement plan	$ 2.8	$ 4.3	$ 2.9
Common stock discount percentage from the prevailing market price	5.00%
Percentage of maximum employee subscription rate on base pay	10.00%
Common stock authorized for issuance under the Plan	1,600,000
Common stock available for purchase under the plan	590,889	611,784
Pension liability	1.1	0.7
Percentage of discretionary incentive compensation	100.00%
Contributions to the Compensation Plan by the employees	1.4	2.9	1.0
Contributions to the Compensation Plan by the employer	$ 0	$ 0	$ 0

Discretionary employer contributions to employee benefit plans.

No definition available.

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- Definition

Deferred compensation plan designated to allow officers and key employees of the company to defer receipt of compensation in percentage.

+ References

No definition available.

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- Definition

This represents the current liability recognized in the balance sheet that is associated with the defined benefit pension plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

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- Definition

The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

The discount rate from market value on offering date that participants pay for shares.

+ References

+ Details

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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