Business Segments (Tables)

6 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Schedule of Operating Results for Business Segments

The operating results for the two business segments are as follows (in thousands):

	Three months ended September 30,				Six months ended September 30,
	2017		2016		2017		2016
Revenues:
Wind	$	5,554	$	12,898	$	7,831	$	18,573
Grid	5,495		5,609		12,140		13,279
Total	$	11,049	$	18,507	$	19,971	$	31,852

	Three months ended September 30,						Six months ended September 30,
	2017			2016			2017			2016
Operating loss:
Wind	$	(1,440	)	$	(1,235	)	$	(5,873	)	$	(4,264	)
Grid	(6,100		)	(5,262		)	(14,268		)	(10,577		)
Unallocated corporate expenses	(265		)	(653		)	(2,358		)	(1,653		)
Total	$	(7,805	)	$	(7,150	)	$	(22,499	)	$	(16,494	)

Schedule of Total Assets for Segments

Total assets for the two business segments as of September 30, 2017 and March 31, 2017 are as follows (in thousands):

	September 30, 2017		March 31, 2017
Wind	$	17,328	$	18,346
Grid	30,052		31,060
Corporate assets	53,168		50,838
Total	$	100,548	$	100,244

Schedule of Revenues by Major Customers

The following table sets forth customers who represented 10% or more of the Company’s total revenues for the three and six months ended September 30, 2017 and 2016:

	Three months ended September 30,				Six months ended September 30,
	2017		2016		2017		2016
INOX Wind Limited	46	%	68	%	35	%	51	%
U.S. Navy	—	%	—	%	16	%	—	%
YMC Inc.	15	%	—	%	<10%		—	%