Share-based compensation - Additional Information (Detail) (USD $) |
3 Months Ended | |
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Sep. 30, 2011
Year
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Sep. 30, 2010 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Weighted average fair value of options granted during the period | $ 13.66 | $ 9.67 |
| Total intrinsic value of options exercised | $ 34,000 | $ 317,000 |
| Total fair value of options vested | 71,000 | 49,000 |
| Stock-based compensation cost | 290,000 | 136,000 |
| Total unrecognized compensation cost related to non-vested stock options which will be expensed in fiscal 2012 through 2015 | $ 2,500,000 | |
| Weighted average period over which the compensation cost is expected to be recognized | 1.5 | |
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Grant Date Fair Value of Options Vested.
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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- Definition The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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