Commitments and Contingencies Representation and warranty reserve (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013
Commitments [Line Items]
Representation and warranty repurchase reserve, begining of period	$ 0
Provision for mortgage representation and warranty losses	2,059
Net realized losses	(934)
Representation and warranty repurchase reserve, end of period	$ 1,125	[1]

[1] Reported in our consolidated balance sheets as a component of other liabilities.