SeaBotix Inc. Acquisition (Details 1) (USD $)	12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2011	Jan. 01, 2011
Balance, Opening	$ 5,000,000		$ 3,000,000		$ 5,000,000
Earnout paid	(2,185,000)		(2,500,000)	(2,000,000)
Increase to contingent earnout liability	500,000		4,500,000
Balance, Ending	$ 3,315,000	[1]	$ 5,000,000	$ 3,000,000	$ 5,000,000

[1] Refer to Note 9 to Consolidated Financial Statements for further information concerning the SBX contingent earnout liability.