Composition of Certain Financial Statement Captions (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
Summary of Accounts Receivable
Accounts receivable, gross	$ 151,738	$ 160,080
Allowance for doubtful accounts	(12,212)	(11,823)
Accounts receivable, net	139,526	148,257
Summary of Inventories
Computer systems and components	996	710
Inventories	996	710
Summary of Equipment and improvements
Computer equipment	34,899	31,633
Furniture and fixtures	8,846	8,416
Leasehold improvements	8,868	7,125
Equipment and improvements, gross	52,613	47,174
Accumulated depreciation	(29,105)	(25,287)
Equipment and improvements, net	23,508	21,887
Summary of Current and non-current deferred revenue
Maintenance	14,750	12,085
Implementation services	34,691	36,899
Annual license services	9,983	9,906
Undelivered software, subscriptions and other	7,219	6,317
Deferred revenue	66,643	65,207
Deferred revenue, net of current	1,362	1,219
Summary of Accrued compensation and related benefits
Payroll, bonus and commission	3,270	3,842
Vacation	8,706	8,073
Accrued compensation and related benefits	11,976	11,915
Summary of Other current liabilities
Contingent consideration and other liabilities related to acquisitions	11,333	8,426
Care services liabilities	3,963	0
Users Group Meeting (UGM) deposits	3,498	5,488
Accrued EDI expense	3,014	1,452
Accrued consulting services	1,512	2,602
Sales tax payable	1,352	1,331
Accrued royalties	1,321	1,336
Self insurance reserve	823	689
Professional services	660	869
Deferred rent	456	384
Outside commission payable	315	461
Accrued travel	75	262
Other accrued expenses	4,021	3,208
Other current liabilities	32,343	26,508
Contingent consideration and other liabilities related to acquisitions	6,789	1,382
Deferred rent	3,921	2,448
Other liabilities		119
Other noncurrent liabilities	$ 10,710	$ 3,949