Consolidated Statements of Redeemable Convertible Preferred Stock and Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Mar. 31, 2016	11,386,865		(95,653)
Balance at Mar. 31, 2016	$ 5	$ 313,674	$ (472)	$ (302,297)	$ (116)	$ 10,794	$ 113	$ 10,907
Stock issued in connection with interest on convertible note (in shares)	60,116
Stock issued in connection with interest on convertible note		277				277		$ 277
Issuance of stock under employee stock purchase plan (in shares)	83,540							83,540
Issuance of stock under employee stock purchase plan		140				140		$ 140
Exercise of stock options (in shares)	1,041
Exercise of stock options		3				3		3
Stock issued in connection with legal settlement		35				35		35
Issuance of restricted stock, net of withholding employee taxes (in shares)	269,497		(49,555)
Issuance of restricted stock, net of withholding employee taxes		(132)				(132)		(132)
Stock-based compensation expense		2,609				2,609		2,609
Stock issued in connection with interest on loan guaranty (in shares)	277,248
Stock issued in connection with interest on loan guaranty		524				524		524
Debt extinguishment with related party		166				166		166
Acquisition of non-controlling interest stock		71				71	(149)	(78)
Foreign currency translation adjustment, net					64	64		64
Net (loss) income				(9,452)		(9,452)	36	(9,416)
Balance (in shares) at Mar. 31, 2017	12,078,307		(145,208)
Balance at Mar. 31, 2017	$ 5	317,367	$ (472)	(311,749)	(52)	5,099		$ 5,099
Issuance of stock under employee stock purchase plan (in shares)	116,583							116,583
Issuance of stock under employee stock purchase plan		187				187		$ 187
Exercise of stock options (in shares)	4,125							4,000
Exercise of stock options		6				6		$ 6
Issuance of restricted stock, net of withholding employee taxes (in shares)	227,412
Issuance of restricted stock, net of withholding employee taxes		(41)				(41)		(41)
Stock-based compensation expense		2,161				2,161		2,161
Foreign currency translation adjustment, net					1,212	1,212		1,212
Net (loss) income				(9,948)		(9,948)		(9,948)
Stock issued in connection with loan guaranty extension (in shares)	50,000
Stock issued in connection with loan guaranty extension		169				169		169
Issuance of stock in registration statement (in shares)	2,184,000
Issuance of stock in registration statement	$ 2	4,907				4,909		4,909
Stock issued upon conversion of convertible note (in shares)	170,733
Stock issued upon conversion of convertible note		973				973		973
Stock issued to induce conversion of convertible note (in shares)	218,540
Stock issued to induce conversion of convertible note
Adjustment of restricted stock, net of withholding employee taxes		213				213		213
Balance (in shares) at Mar. 31, 2018	15,049,700		(145,208)
Balance at Mar. 31, 2018	$ 7	$ 325,942	$ (472)	$ (321,697)	$ 1,160	$ 4,940		$ 4,940