Loans Receivable, Net Allowance for Loan Losses Summary (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended							12 Months Ended
	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Loans and Leases Receivable, Allowance [Abstract]
Allowance for loan losses			$ 10,989				$ 19,821	$ 10,989	$ 19,821	$ 23,147
Provision for loan losses	(300)	505	(831)	3,713	398	(560)	(224)	(426)	(3,327)	16,342
Financing Receivable, Allowance for Credit Losses, Recovery								1,210	398	2,267
Allowance for Loan and Lease Losses, Write-offs								(4,540)	(5,903)	(21,935)
Allowance for loan losses	$ 7,233			$ 10,989				$ 7,233	$ 10,989	$ 19,821