Variable Interest Entities VIE (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			12 Months Ended			12 Months Ended					12 Months Ended
	Mar. 31, 2014		May 15, 2009	Mar. 31, 2014 Carver Statutory Trust 1 [Member]		Mar. 31, 2013 Carver Statutory Trust 1 [Member]	Mar. 31, 2014 CDE 1-9, CDE 11-12 [Member]		Mar. 31, 2014 CDE 10 [Member]		Mar. 31, 2008 CDE 10 [Member]	Mar. 31, 2014 CDE 13 [Member]		Mar. 31, 2014 CDE 14 [Member]		Mar. 31, 2014 CDE 15, 16, 17 [Member]		Mar. 31, 2014 CDE 18 [Member]		Mar. 31, 2014 CDE 19 [Member]		Mar. 31, 2014 CDE 20 [Member]		Mar. 31, 2014 CDE 21 [Member]
Entity Information [Line Items]
Variable Interest Entity, Initial Consolidation, Gain (Loss)	$ 5,850			$ 0			$ 0		$ 1,700			$ 500		$ 400		$ 900		$ 600		$ 500		$ 625		$ 625
Variable Interest Entity, Rights Transferred	149,000		40,000	0			40,000		19,000		19,000	10,500		10,000		20,500		13,254		10,746		12,500		12,500
Variable Interest Entity, Consolidated, Carrying Amount, Assets	15,945			0			15,945		0			0		0		0		0		0		0		0
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	119,050			13,400			0		15,312			10,567		10,034		20,894		13,282		10,893		12,308		12,360
Variable Interest Entity, Total Involvment with SPE Asset	134,995			13,400			15,945		15,312			10,567		10,034		20,894		13,282		10,893		12,308		12,360
Variable Interest Entity, Funded Exposure, Debt Investment	13,000			13,000		13,000	0		0			0		0		0		0		0		0		0
Variable Interest Entity, Funded Exposure, Equity Invesment	0	[1]		400	[1]	400	0	[1]	0	[1]		1	[1]	1	[1]	2	[1]	1	[1]	1	[1]	1	[1]	1	[1]
Variable Ineterest Entity, Unfunded Exposure, Funding Commitments	0			0			0		0			0		0		0		0		0		0		0
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	50,310			0			7,800		7,410			4,095		3,900		7,995		5,169		4,191		4,875		4,875
Variable Interest Entity, Total Exposure	$ 63,718			$ 13,400			$ 7,800		$ 7,410			$ 4,096		$ 3,901		$ 7,997		$ 5,170		$ 4,192		$ 4,876		$ 4,876

[1] (1) Excludes any proceeds realized from exchange of equity interest in CDEs as detailed below.