Acquisition (Details Textual) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended							3 Months Ended
	Mar. 31, 2012 USD ($)	Sep. 30, 2011 USD ($)	Mar. 31, 2012 AUD	Sep. 30, 2011 AUD	Jun. 30, 2011 USD ($)	Jun. 30, 2011 AUD	Apr. 30, 2011 USD ($)	Apr. 30, 2011 AUD	Mar. 31, 2012 Customer relationships (11 year life) [Member] Y	Mar. 31, 2012 Trade name (5 year life) [Member] Y
Acquired Finite-Lived Intangible Assets [Line Items]
Maturity period									11	5
Acquisition (Textual) [Abstract]
Cash paid for Acquisition		$ 0.8		0.8	$ 2.1	2.0	$ 28.8	27.2
Earn out period	1 year
Anticipated post-closing payments to the seller under the terms of the agreement	11.0
Anticipated post closing payments paid		2.9
Balance accrued liabilities	13.9
Accrued Liabilities	$ 11.0		10.6