Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Net revenue:
Total net revenue	$ 36,618	$ 36,014	$ 34,203	$ 34,007	$ 140,842	$ 127,360	$ 127,678
Cost of goods sold:
Total cost of goods sold					66,962	62,943	63,893
Gross profit	19,595	18,647	17,749	17,889	$ 73,880	$ 64,417	$ 63,785
Gross profit margin					52.50%	50.60%	50.00%
Operating expenses:
Product development					$ (37,817)	$ (27,936)	$ (29,048)
Sales and marketing					(19,646)	(18,075)	(20,823)
General and administrative					(23,118)	(24,028)	(19,875)
Depreciation of fixed assets					(2,504)	(2,631)	(2,409)
Amortization of intangibles					(2,567)	(1,879)	(1,392)
Restructuring, severance and other charges	222	58	448	440	1,168	1,798	1,561
Legal settlements	15	0	35	91	141	150	85
Total operating expense					86,961	76,497	75,193
Operating loss					(13,081)	(12,080)	(11,408)
Other (income) expense:
Interest (income)					(339)	(98)	(162)
Interest expense					10	10	15
Other expense (income), net					191	(391)	224
Loss before taxes					(12,943)	(11,601)	(11,485)
Income tax expense (benefit)					221	(3,251)	236
Net loss	$ (3,589)	$ (4,048)	$ (3,791)	$ (1,736)	$ (13,164)	$ (8,350)	$ (11,721)
Weighted average shares outstanding - basic and diluted					23,037	22,801	22,615
Net loss per share (in dollars per share)	$ (0.15)	$ (0.18)	$ (0.16)	$ (0.08)	$ (0.57)	$ (0.37)	$ (0.52)
Products
Net revenue:
Total net revenue					$ 39,003	$ 33,699	$ 38,339
Cost of goods sold:
Total cost of goods sold					31,811	26,381	28,244
Support, Maintenance And Subscription Services [Member]
Net revenue:
Total net revenue					75,496	69,068	63,308
Cost of goods sold:
Total cost of goods sold					15,895	16,688	16,965
Support, maintenance and subscription services
Net revenue:
Total net revenue					101,800
Professional services
Net revenue:
Total net revenue					26,343	24,593	26,031
Cost of goods sold:
Total cost of goods sold					$ 19,256	$ 19,874	$ 18,684