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Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Compensation And Retirement Disclosure [Abstract]
Company percentage match of participants contributions for the first three percent of compensation	100.00%
Percentage of first compensation	3.00%
Company percentage match of participants contributions for next two percent of compensation	50.00%
Percentage of next compensation	2.00%
Company 401(k) Match	$ 219,611	$ 205,480	$ 228,612
Profit sharing contributions	0	400,000	300,000
Company match of savings programs	$ 78,706	$ 77,049	$ 74,644
Company Employee Stock Purchase Plan percentage match of employee's contributions of gross salary	3.00%
Shares of treasury stock purchased by employees	48,679	28,998	25,781

X

- Definition

Defined contribution plan employer matching contribution percent for first compensation slab.

+ References

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- Definition

Defined contribution plan employer matching contribution percent for next compensation slab.

+ References

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X

- Definition

Percentage of employees gross pay for which the employer contributes a matching contribution to a employee stock purchase plan.

+ References

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- Definition

Percentage of first compensation.

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- Definition

Percentage of next compensation.

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X

- Definition

Savings Programs employer matching contribution amount.

+ References

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- Definition

Shares of treasury stock purchased by employees.

+ References

No definition available.

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X

- 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

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

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