CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows From Operating Activities:
Net income	$ 1,704,000	$ 720,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	423,000	373,000
Deferred income taxes	(74,000)	(91,000)
Stock-based compensation expense	184,000	200,000
Change in operating assets and liabilities:
Accounts receivable	250,000	1,324,000
Inventories	573,000	(1,331,000)
Other assets	(140,000)	77,000
Accounts payable	(320,000)	777,000
Accrued expenses	(554,000)	(375,000)
Income taxes payable	417,000	36,000
Net cash provided by operating activities	2,463,000	1,710,000
Cash Flows From Investing Activities:
Purchase of SeaBotix Inc.	0	(1,560,000)
Capital expenditures and other non-current assets	(407,000)	(200,000)
Net cash used by investing activities	(407,000)	(1,760,000)
Cash Flows From Financing Activities:
Dividends paid	(429,000)	0
Exercise of stock options	69,000	0
Purchases of treasury stock	0	(297,000)
Tax benefit (liability) from vested restricted stock	23,000	(4,000)
Net cash used by financing activities	(337,000)	(301,000)
Net increase (decrease) in cash and cash equivalents	1,719,000	(351,000)
Cash and cash equivalents at beginning of period	24,613,000	31,683,000
Cash and cash equivalents at end of period	26,332,000	31,332,000
Supplemental Disclosure of Cash Flow Information:
Income taxes paid	552,000	102,000
Non cash transactions:
Transfer of property, plant and equipment to inventory	$ 0	$ 627,000