Composition of Certain Financial Statement Captions (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Mar. 31, 2012
Summary of Accounts Receivable
Accounts receivable, gross	$ 160,745	$ 154,237
Allowance for doubtful accounts	(9,250)	(8,481)
Accounts receivable, net	151,495	145,756
Summary of Inventories
Computer systems and components	3,912	3,709
Miscellaneous parts	0	6
Inventories	3,912	3,715
Summary of Equipment and improvements
Computer equipment	29,936	24,936
Furniture and fixtures	7,445	6,358
Leasehold improvements	6,983	4,906
Equipment and improvements, gross	44,364	36,200
Accumulated depreciation	(23,434)	(18,359)
Equipment and improvements, net	20,930	17,841
Summary of Current and non-current deferred revenue
Maintenance	12,543	12,742
Implementation services	38,110	55,235
Annual license services	8,854	11,730
Undelivered software and other	3,494	3,401
Deferred revenue	63,001	83,108
Deferred revenue, net of current	1,307	1,293
Summary of Accrued compensation and related benefits
Payroll, bonus and commission	746	4,890
Vacation	7,849	6,980
Accrued compensation and related benefits	8,595	11,870
Summary of Other current liabilities
Contingent consideration and other liabilities related to acquisitions	7,640	5,482
Care services liabilities	5,155	1,962
Users Group Meeting (UGM) deposits	2,928	880
Accrued EDI expense	2,106	0
Accrued consulting services	1,635	1,974
Sales tax payable	1,250	2,588
Accrued royalties	942	934
Self insurance reserve	765	527
Professional services	728	610
Deferred rent	498	520
Outside commission payable	415	509
Accrued travel	136	1,297
Customer deposits
Other accrued expenses	3,552	2,285
Other current liabilities	27,750	19,568
Contingent consideration and other liabilities related to acquisitions	2,510	2,476
Deferred rent	1,720	2,989
Other liabilities	138	137
Other noncurrent liabilities	$ 4,368	$ 5,602