Composition of Certain Financial Statement Captions (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012
Summary of Accounts Receivable
Accounts receivable, excluding undelivered software, maintenance and services	$ 109,929	$ 100,054
Undeliverable software, maintenance and implementation services billed in advance, included in deferred revenue	53,098	54,183
Accounts receivable, gross	163,027	154,237
Allowance for doubtful accounts	(9,809)	(8,481)
Accounts receivable, net	153,218	145,756
Summary of Inventories
Computer systems and components	4,228	3,709
Miscellaneous parts and supplies	0	6
Inventories	4,228	3,715
Summary of Equipment and improvements
Computer equipment	27,572	24,936
Furniture and fixtures	6,912	6,358
Leasehold improvements	6,070	4,906
Equipment and improvements, gross	40,554	36,200
Accumulated depreciation	(19,976)	(18,359)
Equipment and improvements, net	20,578	17,841
Summary of Current and non-current deferred revenue
Maintenance	11,064	12,742
Implementation services	47,476	55,235
Annual license services	8,595	11,730
Undelivered software and other	3,518	3,401
Deferred revenue	70,653	83,108
Deferred revenue, net of current	1,089	1,293
Summary of Accrued compensation and related benefits
Payroll, bonus and commission	3,644	4,890
Vacation	7,536	6,980
Accrued compensation and related benefits	11,180	11,870
Summary of Other current liabilities
Contingent consideration related to acquisitions	8,767	5,482
Care services liabilities	4,768	1,962
Accrued royalties	2,551	1,974
Accrued consulting services	1,995	880
Accrued EDI expense	1,484	2,588
Self insurance reserve	986	934
Sales tax payable	890	527
Deferred rent	754	610
Accrued travel	593	509
Outside commission payable	535	520
Professional services	283	82
Customer deposits	209	1,297
Other accrued expenses	3,510	2,203
Other current liabilities	27,325	19,568
Contingent consideration related to acquisitions	4,691	2,989
Deferred rent	2,831	2,476
Other liabilities	132	137
Other noncurrent liabilities	$ 7,654	$ 5,602