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Stock-based compensation (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Stock-based compensation
Total cost of stock-based compensation during the period	$ 1,423	$ 337	$ 2,364	$ 1,071
Amounts capitalized in ending inventory	(333)	(162)	(643)	(498)
Amounts recognized in expense previously capitalized	237	304	629	899
Amounts charged against income for the period before tax	$ 1,327	$ 479	$ 2,350	$ 1,472

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.

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