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Share-based compensation (Details)	Jun. 30, 2013	May 11, 2010
Equity and Incentive Plan (EIP)
Share-based compensation
Aggregate shares of issuance of common stock approved by shareholders	4,000,000
Shares remaining available for future issuance	3,600,000
Shares that can be issued upon vesting of outstanding units and achievement of performance goals	2,600,000
Stock Option and Incentive Plan (SOIP)
Share-based compensation
Shares remaining available for future issuance		0
Outstanding shares	1,000

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).

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