Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Current assets:
Cash and cash equivalents	$ 134,444	$ 116,617
Restricted cash	1,962	3,787
Marketable securities	4,987	1,120
Accounts receivable, net	145,756	139,772
Inventories	3,715	1,933
Income taxes receivable	2,628
Deferred income taxes, net	10,127	10,397
Other current assets	9,090	8,768
Total current assets	312,709	282,394
Equipment and improvements, net	17,841	12,599
Capitalized software costs, net	19,994	15,150
Intangibles, net	23,259	16,890
Goodwill	60,776	46,721
Other assets	5,773	4,932
Total assets	440,352	378,686
Current liabilities:
Accounts payable	4,532	6,686
Deferred revenue	83,108	76,695
Accrued compensation and related benefits	11,870	10,247
Income taxes payable		3,530
Dividends payable	10,354	10,162
Other current liabilities	19,568	29,316
Total current liabilities	129,432	136,636
Deferred revenue, net of current	1,293	1,099
Deferred income taxes, net	5,351	11,384
Deferred compensation	3,497	2,488
Other noncurrent liabilities	5,602	2,409
Total liabilities	145,175	154,016
Commitments and contingencies (Note 13)
Shareholders' equity:
Common stock $0.01 par value; authorized 100,000 shares; issued and outstanding 59,180 and 58,068 shares at March 31, 2012 and March 31, 2011, respectively	592	580
Additional paid-in capital	168,988	132,969
Retained earnings	125,597	91,121
Total shareholders' equity	295,177	224,670
Total liabilities and shareholders' equity	$ 440,352	$ 378,686