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Benefit Plans - Additional Information (Detail) (USD $) | 12 Months Ended
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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

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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Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 + Details
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