Segment and Customer Information (Tables)

12 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following table provides selected financial information for each reportable segment for the fiscal years ended June 30, 2013, 2012 and 2011.

	Seismic Energy Sources		Underwater Cables & Connectors		Seismic Energy Source Controllers		Underwater Robotic Vehicles		Corporate Headquarters & Eliminations		Consolidated
Fiscal Year Ended June 30, 2013
Sales to external customers	$	22,971,000	$	17,453,000	$	2,700,000	$	14,718,000	$	—	$	57,842,000
Intersegment sales		—		318,000		612,000		—		(930,000)		—
Depreciation and amortization		210,000		296,000		225,000		920,000		19,000		1,670,000
Adjustment to contingent earnout liability		—		—		—		500,000		—		500,000
Income (loss) before income taxes		4,041,000		7,111,000		884,000		2,097,000		(3,942,000)		10,191,000
Segment assets		23,140,000		18,757,000		5,716,000		22,724,000		12,749,000		83,086,000
Goodwill		—		7,679,000		3,278,000		6,270,000		—		17,227,000
Fixed asset additions		217,000		409,000		9,000		126,000		—		761,000
Fiscal Year Ended June 30, 2012
Sales to external customers	$	19,311,000	$	15,473,000	$	2,482,000	$	15,344,000	$	—	$	52,610,000
Intersegment sales		—		162,000		420,000		—		(582,000)		—
Depreciation and amortization		157,000		266,000		289,000		897,000		19,000		1,628,000
Adjustment to contingent earnout liability		—		—		—		4,500,000		—		4,500,000
Income (loss) before income taxes		4,085,000		5,594,000		721,000		(1,883,000)		(3,640,000)		4,877,000
Segment assets		19,985,000		15,990,000		6,272,000		21,421,000		19,046,000		82,714,000
Goodwill		—		7,679,000		3,278,000		6,270,000		—		17,227,000
Fixed asset additions		831,000		102,000		7,000		91,000		—		1,031,000
Fiscal Year Ended June 30, 2011
Sales to external customers	$	18,149,000	$	15,391,000	$	2,743,000	$	2,575,000	$	—	$	38,858,000
Intersegment sales		—		137,000		422,000		—		(559,000)		—
Depreciation and amortization		202,000		258,000		287,000		453,000		19,000		1,219,000
Adjustment to contingent earnout liability		—		—		—		—		—		—
Income (loss) before income taxes		4,335,000		5,899,000		1,006,000		(618,000)		(2,647,000)		7,975,000
Segment assets		22,212,000		15,395,000		6,072,000		19,319,000		24,742,000		87,740,000
Goodwill		—		7,679,000		3,278,000		6,270,000		—		17,227,000
Fixed asset additions		213,000		83,000		12,000		53,000		—		361,000

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

The following table reports sales by country for the fiscal years ended June 30, 2013, 2012 and 2011. Sales are attributed to each country based on the location of the customer. Total sales to all foreign countries for the fiscal years ended June 30, 2013, 2012 and 2011 were $35,682,000, $35,680,000 and $30,666,000, respectively.

	2013		2012		2011
United States	$	22,160,000	$	16,930,000	$	8,192,000
Norway		10,268,000		6,046,000		5,953,000
United Arab Emirates		6,039,000		7,804,000		9,419,000
France		5,618,000		5,777,000		6,532,000
Peoples Republic of China		3,572,000		2,834,000		1,651,000
Singapore		1,649,000		2,089,000		2,293,000
Netherlands		1,609,000		1,122,000		576,000
United Kingdom		1,250,000		2,615,000		1,165,000
Russia		1,031,000		1,467,000		737,000
Canada		848,000		2,126,000		243,000
Australia		634,000		839,000		409,000
Japan		582,000		906,000		680,000
Brazil		308,000		164,000		—
Other		2,274,000		1,891,000		1,008,000
	$	57,842,000	$	52,610,000	$	38,858,000

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

Customers accounting for 10% or more of consolidated sales in fiscal years 2013, 2012 or 2011 are as follows:

	2013			2012			2011
Customer A		16	%		17	%		23	%
Customer B		10	%		7	%		—
Customer C		10	%		5	%		6	%
Customer D		4	%		10	%		18	%