Composition of Certain Financial Statement Captions (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Mar. 31, 2012
Summary of Accounts Receivable
Accounts receivable, gross	$ 162,115	$ 154,237
Allowance for doubtful accounts	(10,328)	(8,481)
Accounts receivable, net	151,787	145,756
Summary of Inventories
Computer systems and components	3,858	3,709
Miscellaneous parts and supplies	0	6
Inventories	3,858	3,715
Summary of Equipment and improvements
Computer equipment	29,008	24,936
Furniture and fixtures	7,197	6,358
Leasehold improvements	5,836	4,906
Equipment and improvements, gross	42,041	36,200
Accumulated depreciation	(21,745)	(18,359)
Equipment and improvements, net	20,296	17,841
Summary of Current and non-current deferred revenue
Maintenance	11,642	12,742
Implementation services	42,603	55,235
Annual license services	9,171	11,730
Undelivered software and other	4,552	3,401
Deferred revenue	67,968	83,108
Deferred revenue, net of current	1,225	1,293
Summary of Accrued compensation and related benefits
Payroll, bonus and commission	2,058	4,890
Vacation	7,836	6,980
Accrued compensation and related benefits	9,894	11,870
Summary of Other current liabilities
Contingent consideration related to acquisitions	9,152	5,482
Care services liabilities	5,223	1,962
Users Group Meeting (UGM) accrual	3,545	0
Accrued EDI expense	2,049	2,588
Accrued consulting services	1,523	880
Sales tax payable	1,341	527
Accrued royalties	1,210	1,974
Self insurance reserve	1,030	934
Professional services	782	82
Deferred rent	768	610
Outside commission payable	532	520
Accrued travel	345	509
Customer deposits	290	1,297
Other accrued expenses	3,318	2,203
Other current liabilities	31,108	19,568
Contingent consideration related to acquisitions	4,281	2,989
Deferred rent	2,681	2,476
Other liabilities	141	137
Other noncurrent liabilities	$ 7,103	$ 5,602