Consolidated Statements of Income (USD $) In Thousands, except Per Share data	12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Revenues:
Software, hardware and supplies	$ 106,514	$ 89,761	$ 85,386
Implementation and training services	18,015	14,376	13,375
System sales	124,529	104,137	98,761
Maintenance	110,019	89,192	72,862
Electronic data interchange services	41,022	35,035	29,522
Revenue cycle management and related services	45,065	36,665	21,431
Other services	32,728	26,782	22,939
Maintenance, EDI, RCM and other services	228,834	187,674	146,754
Total revenues	353,363	291,811	245,515
Cost of revenue:
Software, hardware and supplies	19,779	12,115	13,184
Implementation and training services	15,010	11,983	10,286
Total cost of system sales	34,789	24,098	23,470
Maintenance	12,948	13,339	11,859
Electronic data interchange services	27,711	25,262	21,374
Revenue cycle management and related services	33,815	27,715	14,674
Other services	18,219	20,393	17,513
Total cost of maintenance, EDI, RCM and other services	92,693	86,709	65,420
Total cost of revenue	127,482	110,807	88,890
Gross profit	225,881	181,004	156,625
Operating expenses:
Selling, general and administrative	108,310	86,951	69,410
Research and development costs	21,797	16,546	13,777
Amortization of acquired intangible assets	1,682	1,783	1,035
Total operating expenses	131,789	105,280	84,222
Income from operations	94,092	75,724	72,403
Interest income	263	226	1,203
Other income (expense), net	61	268	(279)
Income before provision for income taxes	94,416	76,218	73,327
Provision for income taxes	32,810	27,839	27,208
Net income	$ 61,606	$ 48,379	$ 46,119
Net income per share:
Basic	$ 2.13	$ 1.69	$ 1.65
Diluted	$ 2.12	$ 1.68	$ 1.62
Weighted-average shares outstanding:
Basic	28,947	28,635	28,031
Diluted	29,118	28,796	28,396
Dividends declared per common share	$ 1.25	$ 1.20	$ 1.15