SeaBotix Inc. Acquisition (Details) (USD $)	Mar. 31, 2014
Business Combination, Separately Recognized Transactions [Line Items]
Cash paid	$ 9,500,000
Accrual for contingent earnout payments	5,000,000
Accrual for holdback and pro forma working capital adjustment	1,560,000
Total purchase price	16,060,000
Net current assets, including cash acquired of $316,000 and accounts receivable of $1,342,000	4,963,000
Non-current assets (mainly property and equipment)	796,000
Goodwill	6,270,000
Other intangible assets	8,500,000
Accounts payable and accrued expenses	(1,010,000)
Debt assumed	(539,000)
Deferred tax liability (non-current)	(2,920,000)
Total purchase price allocation	$ 16,060,000