CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash Flows From Operating Activities:
Net income	$ 5,381,000	$ 3,405,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	803,000	851,000
Deferred income taxes	(211,000)	(178,000)
Stock-based compensation expense	349,000	383,000
Adjustment of contingent earnout liability	1,500,000	0
Gain on condemnation settlement	(507,000)	0
Change in operating assets and liabilities:
Accounts receivable	(3,861,000)	803,000
Inventories	(1,407,000)	1,541,000
Other assets	448,000	(28,000)
Accounts payable	(489,000)	(136,000)
Accrued expenses	(654,000)	(1,083,000)
Income taxes payable	1,176,000	(329,000)
Net cash provided by operating activities	2,528,000	5,229,000
Cash Flows From Investing Activities:
Purchase of SeaBotix Inc.	0	(1,900,000)
Proceeds from condemnation settlement	529,000	0
Capital expenditures and other non-current assets	(860,000)	(476,000)
Net cash used by investing activities	(331,000)	(2,376,000)
Cash Flows From Financing Activities:
Dividends paid	(1,383,000)	(5,946,000)
Exercise of stock options	25,000	277,000
Tax asset from vested restricted stock and stock options exercised	49,000	28,000
Net cash used by financing activities	(1,309,000)	(5,641,000)
Net increase (decrease) in cash and cash equivalents	888,000	(2,788,000)
Cash and cash equivalents at beginning of period	22,816,000	24,613,000
Cash and cash equivalents at end of period	23,704,000	21,825,000
Supplemental Disclosure of Cash Flow Information:
Income taxes paid	$ 2,451,000	$ 2,215,000