Income Taxes - Reconciliation and Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Reconciliation of income tax (benefit) provision to taxes computed at U.S. federal statutory rates
(Benefit) for income taxes at statutory rates	$ (1,778)	$ (1,175)	$ (712)
State income taxes net of federal benefit	(124)	(184)	(108)
Impairment charges	737
Tax credits	(125)	(258)	(148)
Change in fair value of contingent acquisition consideration			3
Compensation charges	29	91	88
Change in valuation allowance	1,148	10,557
Other	69	48	61
Net income tax (benefit) provision	(44)	9,079	$ (816)
Deferred tax assets:
Net operating losses	830	2,468
Capitalized R&D	5,003	3,557
Credit carry forwards	2,387	2,130
Deferred compensation and payroll	2,064	1,306
Bad debt allowance and other reserves	820	665
Deferred rent	313	335
Property and equipment	521
Other, net	255	242
Total deferred tax assets	12,193	10,703
Valuation allowance	(11,726)	(10,561)		$ (10,100)
Total deferred tax assets, net of valuation allowance	467	142
Deferred tax liabilities:
Property and equipment		(71)
Acquired intangibles	(467)	(71)
Goodwill	(707)	(685)
Total deferred tax liabilities	(1,174)	(827)
Net deferred tax liabilities	$ (707)	$ (685)