Composition of Certain Financial Statement Captions (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
Summary of Accounts Receivable
Accounts receivable, excluding undelivered software, maintenance and services	$ 100,054	$ 90,487
Undeliverable software, maintenance and implementation services billed in advance, included in deferred revenue	54,183	56,002
Accounts receivable, gross	154,237	146,489
Allowance for doubtful accounts	(8,481)	(6,717)
Accounts receivable, net	145,756	139,772
Summary of Inventories
Computer systems and components, net	3,709	1,925
Miscellaneous parts and supplies	6	8
Inventories	3,715	1,933
Summary of Equipment and improvements
Computer equipment	24,936	23,567
Furniture and fixtures	6,358	5,861
Leasehold improvements	4,906	4,434
Equipment and improvements, gross	36,200	33,862
Accumulated depreciation and amortization	(18,359)	(21,263)
Equipment and improvements, net	17,841	12,599
Summary of Current and non-current deferred revenue
Maintenance	12,742	11,108
Implementation services	55,235	52,197
Annual license services	11,730	10,127
Undelivered software and other	3,401	3,263
Deferred revenue	83,108	76,695
Deferred revenue, net of current	1,293	1,099
Summary of Accrued compensation and related benefits
Payroll, bonus and commission	4,890	5,014
Vacation	6,980	5,233
Accrued compensation and related benefits	11,870	10,247
Other Liabilities [Abstract]
Contingent consideration related to acquisitions	5,482	13,658
Accrued EDI expense	2,588	2,801
Accrued royalties	1,974	1,752
Care services liabilities	1,962	3,787
Customer deposits	1,297	962
Self insurance reserve	934	475
Deferred rent	610	437
Sales tax payable	527	589
Outside commission payable	520	599
Accrued travel	509	1,026
Other accrued expenses	3,165	3,230
Other current liabilities	19,568	29,316
Contingent consideration related to acquisitions	2,989
Deferred rent	2,476	2,387
Other liabilities	137	22
Other non-current liabilities	$ 5,602	$ 2,409