Property and Equipment Net By Type (Details) (USD $)	12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 34,187,000		$ 27,878,000
Less accumulated depreciation and amortization	(19,925,000)		(17,032,000)
Property and equipment, net	14,262,000		10,846,000
Depreciation expense	4,100,000		3,500,000		2,800,000
Furniture, fixtures and computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,287,000		8,410,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,175,000		1,904,000
Capitalized software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	21,725,000	[1]	17,564,000	[1]
Capitalized software still in development phase therefore not being amortized	1,900,000		1,500,000
Amortization expense, capitalized software	2,800,000		2,300,000		1,900,000
Accumulated amortization, capitalized software	12,000,000		9,300,000
Capitalized software, net, amortization expense, fiscal year maturity [Abstract]
2014	2,756,000
2015	2,214,000
2016	1,582,000
2017	936,000
2018	301,000
Thereafter	0
Capitalized software assets, net	$ 7,789,000

[1] Includes $1.9 million and $1.5 million of capitalized costs associated with software projects which are still in the application development stage as of March 31, 2013 and 2012, respectively, and, as such, are not being amortized.