Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2018	May 01, 2018	Apr. 30, 2018	Oct. 31, 2017	Apr. 30, 2017
Current assets:
Cash and cash equivalents	$ 50,933	$ 52,794	$ 52,794	$ 61,242	$ 66,001
Investments	29,816	26,121	26,121
Trade accounts receivable, less allowance for doubtful accounts of $172 at October 31, 2018 and $159 at April 30, 2018:
Billed	17,427	18,643	18,643
Unbilled	3,104	3,815	3,375
Prepaid expenses and other current assets	6,568	6,718	6,592
Total current assets	107,848	108,091	107,525
Investments-noncurrent	1,925	8,893	8,893
Property and equipment, net of accumulated depreciation of $28,963 at October 31, 2018 and $28,644 at April 30, 2018	3,609	3,034	3,034
Capitalized software, net of accumulated amortization of $26,311 at October 31, 2018 and $24,113 at April 30, 2018	9,618	9,728	9,728
Goodwill	25,888	25,888	25,888
Other intangibles, net of accumulated amortization of $9,449 at October 31, 2018 and $8,255 at April 30, 2018	3,926	5,120	5,120
Other assets	3,776	4,102	2,777
Total assets	156,590	164,856	162,965
Current liabilities:
Accounts payable	1,475	1,974	1,974
Accrued compensation and related costs	2,829	6,310	6,310
Dividends payable	3,405	3,367	3,367
Other current liabilities	1,362	1,326	1,246
Deferred revenue	29,395	32,705	33,226
Total current liabilities	38,466	45,682	46,123
Deferred income taxes	2,929	3,194	2,615
Long-term deferred revenue		147	147
Other long-term liabilities	1,107	1,496	1,496
Total liabilities	42,502	50,519	50,381
Shareholders' equity:
Additional paid-in capital	135,150	131,258	131,258
Retained earnings	943	5,119	3,366
Class A treasury stock, 4,588,632 shares at October 31, 2018 and April 30, 2018, at cost	(25,559)	(25,559)	(25,559)
Total shareholders' equity	114,088	114,337	112,584
Commitments and contingencies
Total liabilities and shareholders' equity	156,590	164,856	162,965
Class A Common Shares
Shareholders' equity:
Common stock value	3,372	3,314	3,314
Class B Common Shares
Shareholders' equity:
Common stock value	$ 182	$ 205	$ 205