Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013 asset_purchase business_combination acquisition	Mar. 31, 2012 asset_purchase business_combination acquisition	Mar. 31, 2011 business_combination asset_purchase acquisition
Business Acquisition [Line Items]
Number of business combinations	3	2	6
Number of asset purchases	9	23	14
Total acquisitions	12	25	20
Tangible assets:
Acquired loans term	4 months
Original fair value of customer list for an office acquisition, description	less than $100,000
Series of Business Acquisitions [Member]
Business Acquisition [Line Items]
Purchase price	$ 2,649	$ 4,253	$ 3,725
Tangible assets:
Net loans	1,925	3,368	2,974
Furniture, fixtures & equipment	8	16	4
Tangible assets acquired	1,933	3,384	2,978
Excess of purchase prices over carrying value of net tangible assets	716	869	747
Goodwill	205	56	44
Total intangible assets	716	869	747
Series of Business Acquisitions [Member] | Customer lists [Member]
Tangible assets:
Finite-lived intangible assets	451	717	607
Series of Business Acquisitions [Member] | Non-compete agreements [Member]
Tangible assets:
Finite-lived intangible assets	$ 60	$ 96	$ 96