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Stock Options (Narrative) (Detail) (USD $) | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2012 Exercise price of stock options received in entity shares [Member] | Dec. 31, 2011 Exercise price of stock options received in entity shares [Member] | Dec. 31, 2012 Employee 2012 Stock Option Plan [Member] | Dec. 31, 2012 2002 Employee Stock Option Plan [Member] | Dec. 31, 2012 2002 Employee Stock Option Plan [Member] | Dec. 31, 2012 Stock Option Plan 2000 [Member] | Sep. 30, 2012 Stock Option Plan 2000 [Member] | Dec. 31, 2012 NonEmployee 2012 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance under the plan |  |  |  | 950,000 | 1,836,000 | 1,836,000 |  | 270,000 | 50,000
Percentage applied to market price to set a grant price for a shareholder owning 10% or more of the company's outstanding common stock |  |  |  | 110.00% |  | 110.00% |  |  |
Term of stock option awards |  |  |  | 10 years |  | 10 years |  | 5 years | 10 years
Annual rate at which share-based compensation awards vest |  |  |  | 20.00% |  | 20.00% |  | 20.00% | 20.00%
Number of stock options available for grant |  |  |  | 950,000 |  |  |  |  | 50,000
Number of stock options granted from plan inception |  |  |  |  |  | 1,471,480 |  |  |
Description of noncash transaction |  | 729,000 options were exercised during the six months ended December 31, 2012 and no options were exercised during the six months ended December 31, 2011. These exercises were paid for with 399,790 shares of the Company's common stock, 27,900 of which were retired upon receipt. Cash received from option exercises for each of the six months ended December 31, 2012 and 2011 was $0 and the actual tax benefit realized for the tax deductions from option exercises totaled $119,000 and $0 for these periods, respectively. |  |  |  |  |  |  |
Number of shares exercised |  | 729,000 | 0 |  |  |  |  |  |
Noncash collection of stock option exercise price, number of shares received and retired |  | 27,900 |  |  |  |  |  |  |
Noncash collection of stock option exercise price, number of shares received |  | 399,790 |  |  |  |  |  |  |
Tax benefit from stock option exercise | $ 119,000 | $ 119,000 | $ 0 |  |  |  |  |  |
Unearned stock-based compensation cost related to non-vested awards |  |  |  |  | 0 | 0 | 0 |  |
Fair value of stock options that vested during the period |  |  |  |  | $ 0 |  | $ 0 |  |
Option price stated as a percentage of the fair market value of the stock price on the date of grant |  |  |  |  |  |  |  | 100.00% |

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- Definition The sum of the market price plus the markup applied to market price on the date of grant to set the exercise price of a stock option awarded to a grantee owning 10% or more of the entity's outstanding common stock on the date of grant. + References No definition available. + Details
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- Definition Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest. + References No definition available. + Details
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- Definition A textual description of other significant noncash (or part noncash) investing and financing activities required to be supplementally disclosed to enable users of the financial information to fully understand the period cash flows of the Entity in relation to the statements of financial position, income statement, and statement of changes in shareholders' equity. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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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 -Subparagraph a -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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 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 + Details
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