Consumer Loans Receivable (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Mar. 31, 2012
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Consumer loans receivable	$ 116,606	$ 119,539
Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	77,308
Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,139
Chattel Loans Range One [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	619
Chattel Loans Range One [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	34,921
Chattel Loans Range Two [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	719
Chattel Loans Range Two [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	620
Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	39,248
Chattel Loans Range Three [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	720
Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	12,297
Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	498
Conforming Mortgages Range One [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	619
Conforming Mortgages Range One [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	8,578
Conforming Mortgages Range Two [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	719
Conforming Mortgages Range Two [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	620
Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,221
Conforming Mortgages Range Three [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	720
Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	26,983
Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,569
Non Conforming Mortgages Range One [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	619
Non Conforming Mortgages Range One [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	14,759
Non Conforming Mortgages Range Two [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	719
Non Conforming Mortgages Range Two [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	620
Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	8,655
Non Conforming Mortgages Range Three [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	720
Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	18
Loans Securitized 2005 [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Consumer loans receivable	48,949
Loans Securitized 2005 [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	44,554
Loans Securitized 2005 [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,354
Loans Securitized 2005 [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	20,177
Loans Securitized 2005 [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	23,023
Loans Securitized 2005 [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2005 [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2005 [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2005 [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2005 [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	4,395
Loans Securitized 2005 [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	97
Loans Securitized 2005 [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,119
Loans Securitized 2005 [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,179
Loans Securitized 2005 [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2007 [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Consumer loans receivable	43,341
Loans Securitized 2007 [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	30,041
Loans Securitized 2007 [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	880
Loans Securitized 2007 [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	13,634
Loans Securitized 2007 [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	15,527
Loans Securitized 2007 [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2007 [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2007 [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2007 [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Securitized 2007 [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	13,300
Loans Securitized 2007 [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	850
Loans Securitized 2007 [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	7,515
Loans Securitized 2007 [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	4,935
Loans Securitized 2007 [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Loans Unsecuritized [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Consumer loans receivable	13,902
Loans Unsecuritized [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,713
Loans Unsecuritized [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	905
Loans Unsecuritized [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,110
Loans Unsecuritized [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	698
Loans Unsecuritized [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,883
Loans Unsecuritized [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	309
Loans Unsecuritized [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,563
Loans Unsecuritized [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	11
Loans Unsecuritized [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	9,288
Loans Unsecuritized [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,622
Loans Unsecuritized [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,125
Loans Unsecuritized [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,541
Loans Unsecuritized [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	18
Construction Advances [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Consumer loans receivable	5,381
Construction Advances [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,381
Construction Advances [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	189
Construction Advances [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,431
Construction Advances [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,761
Construction Advances [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Consumer loans receivable	5,033
Consumer Loans Held For Sale [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,033
Consumer Loans Held For Sale [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,584
Consumer Loans Held For Sale [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,449
Consumer Loans Held For Sale [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	$ 0