Consolidated Balance Sheets (USD $) In Thousands	12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Current assets:
Cash and cash equivalents	$ 116,617	$ 84,611
Restricted cash	3,787	2,339
Marketable securities	1,120	7,158
Accounts receivable, net	139,772	107,458
Inventories	1,933	1,340
Income taxes receivable	0	2,953
Deferred income taxes, net	10,397	5,678
Other current assets	8,768	8,684
Total current assets	282,394	220,221
Equipment and improvements, net	12,599	8,432
Capitalized software costs, net	15,150	11,546
Intangibles, net	16,890	20,145
Goodwill	46,721	46,189
Other assets	4,932	3,647
Total assets	378,686	310,180
Current liabilities:
Accounts payable	6,686	3,342
Deferred revenue	76,695	64,109
Accrued compensation and related benefits	10,247	8,951
Income taxes payable	3,530	0
Dividends payable	10,162	8,664
Other current liabilities	29,316	16,220
Total current liabilities	136,636	101,286
Deferred revenue, net of current	1,099	474
Deferred income taxes, net	11,384	10,859
Deferred compensation	2,488	1,883
Other noncurrent liabilities	2,409	7,389
Total liabilities	154,016	121,891
Commitments and contingencies (Note 13)
Shareholders' equity:
Common stock $0.01 par value; authorized 50,000 shares; issued and outstanding 29,034 and 28,879 shares at March 31, 2011 and March 31, 2010, respectively	290	289
Additional paid-in capital	133,259	122,271
Retained earnings	91,121	65,729
Total shareholders' equity	224,670	188,289
Total liabilities and shareholders' equity	$ 378,686	$ 310,180