Condensed Consolidated Balance Sheets (USD $)	Jul. 31, 2013	Apr. 30, 2013
Current assets:
Cash and cash equivalents	$ 50,378,000	$ 41,164,000
Investments	13,079,000	18,602,000
Trade accounts receivable, less allowance for doubtful accounts of $288 at July 31, 2013 and $337 at April 30, 2013:
Billed	10,621,000	13,179,000
Unbilled	2,616,000	3,741,000
Prepaid expenses and other current assets	2,846,000	3,162,000
Total current assets	79,540,000	79,848,000
Investments-Noncurrent	7,103,000	6,658,000
Property and equipment, net of accumulated depreciation of $29,750 at July 31, 2013 and $29,489 at April 30, 2013	4,255,000	4,482,000
Capitalized software, net of accumulated amortization of $8,289 at July 31, 2013 and $7,664 at April 30, 2013	8,800,000	8,708,000
Goodwill	12,601,000	12,601,000
Other intangibles, net of accumulated amortization of $2,399 at July 31, 2013 and $2,256 at April 30, 2013	544,000	687,000
Other assets	85,000	86,000
Total assets	112,928,000	113,070,000
Current liabilities:
Accounts payable	963,000	1,207,000
Accrued compensation and related costs	2,258,000	2,961,000
Other current liabilities	3,224,000	2,969,000
Deferred income taxes	112,000	332,000
Deferred revenue	19,606,000	21,291,000
Total current liabilities	26,163,000	28,760,000
Deferred income taxes	1,092,000	1,066,000
Total liabilities	27,255,000	29,826,000
Shareholders' equity:
Additional paid-in capital	99,774,000	98,947,000
Retained earnings	6,991,000	5,398,000
Class A treasury stock, 4,444,815 shares at July 31, 2013 and April 30, 2013, at cost	(24,278,000)	(24,278,000)
Total shareholders' equity	85,673,000	83,244,000
Commitments and contingencies
Total liabilities and shareholders' equity	112,928,000	113,070,000
Class A Common Shares
Shareholders' equity:
Common stock value	2,927,000	2,918,000
Class B Common Shares
Shareholders' equity:
Common stock value	$ 259,000	$ 259,000