Accrued Expenses (Details) (USD $)	Jun. 30, 2012		Jun. 30, 2011
Accrued expenses	$ 2,735,000		$ 3,623,000
Other [Member]
Accrued expenses	210,000		69,000
SeaBotix Inc. acquisition [Member]
Accrued expenses	0	[1]	1,560,000	[1]
Compensation and related taxes [Member]
Accrued expenses	1,133,000		986,000
Compensated absences [Member]
Accrued expenses	615,000		528,000
Commissions payable [Member]
Accrued expenses	216,000		173,000
Accrued professional fees [Member]
Accrued expenses	281,000		208,000
Customer deposits [Member]
Accrued expenses	$ 280,000		$ 99,000

[1] Refer to Note 2 to Consolidated Financial Statements for SeaBotix Inc. acquisition information.