Quarterly Results (Unaudited) (Tables)

12 Months Ended

Mar. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information

	Year ended March 31, 2016
	First			Second			Third			Fourth			Year
(In thousands except per share data)	quarter			quarter			quarter			Quarter
Net revenue	$	27,491		$	29,644		$	31,307		$	31,924		$	120,366
Gross profit	16,399			17,591			16,508			17,607			68,106
Asset write-offs and other fair value adjustments	—			(175		)	—			355			180
Restructuring, severance and other charges	(46		)	(15		)	8			336			283
Legal settlements	—			—			185			83			268
Net loss	$	(185	)	$	(370	)	$	(1,673	)	$	(1,538	)	$	(3,765	)
Per share data-basic and diluted
Net loss	$	(0.01	)	$	(0.02	)	$	(0.07	)	$	(0.07	)	$	(0.17	)

	Year ended March 31, 2015
	First			Second			Third			Fourth			Year
(In thousands except per share data)	quarter			quarter			quarter			Quarter
Net revenue	$	23,746		$	26,318		$	24,742		$	28,708		$	103,514
Gross profit	14,674			16,669			14,129			14,610			60,081
Asset write-offs and other fair value adjustments	—			—			—			1,836			1,836
Restructuring, severance and other charges	370			448			95			569			1,482
Legal settlements	149			54			—			—			203
Net loss	$	(2,229	)	$	(1,127	)	$	(2,715	)	$	(5,426	)	$	(11,497	)
Per share data-basic and diluted
Net loss	$	(0.10	)	$	(0.05	)	$	(0.12	)	$	(0.24	)	$	(0.51	)