Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2012	Mar. 31, 2012
Goodwill and Intangible Assets
Acquisition costs and goodwill deductible for tax purposes	$ 36,464
Intangible Assets
Weighted Average Useful Life	8 years 1 month 6 days
Gross Carrying Amount	24,600
Accumulated Amortization	8,278
Net Carrying Amount	16,322	18,248
Customer relationships
Intangible Assets
Weighted Average Useful Life	9 years
Gross Carrying Amount	21,600
Accumulated Amortization	5,638
Net Carrying Amount	15,962
Partner relationships
Intangible Assets
Weighted Average Useful Life	6 years 6 months
Gross Carrying Amount	700
Accumulated Amortization	340
Net Carrying Amount	360
Trademark
Intangible Assets
Weighted Average Useful Life	1 year
Gross Carrying Amount	200
Accumulated Amortization	200
Backlog
Intangible Assets
Weighted Average Useful Life	1 year 4 months 24 days
Gross Carrying Amount	2,100
Accumulated Amortization	$ 2,100