SeaBotix Inc. Acquisition (Details 1) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Business Acquisition, Contingent Consideration [Line Items]
Balance, Opening	$ 4,815,000		$ 3,315,000	$ 3,315,000	$ 5,000,000	$ 5,000,000	$ 3,000,000	$ 5,000,000
Earnout paid	(3,005,000)			(3,005,000)	(2,185,000)	(2,185,000)	(2,500,000)	(2,000,000)
Increase to contingent earnout liability	0	0	1,500,000	1,500,000	0	500,000	4,500,000
Balance, Ending	$ 1,810,000		$ 4,815,000	$ 1,810,000		$ 3,315,000	$ 5,000,000	$ 3,000,000