Loans Receivable, net - Classified Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, excluding secured borrowings	$ 202,111	$ 204,218
Percentage of loan receivable in aggregate loan receivable	100.00%	100.00%
Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, excluding secured borrowings	185,564	187,749
Percentage of loan receivable in aggregate loan receivable	91.80%	92.00%
OAEM [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, excluding secured borrowings	1,874	81
Percentage of loan receivable in aggregate loan receivable	0.90%
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, excluding secured borrowings	10,017	13,043
Percentage of loan receivable in aggregate loan receivable	5.00%	6.40%
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, excluding secured borrowings	4,656	3,345
Percentage of loan receivable in aggregate loan receivable	2.30%	1.60%
Commercial Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, commercial mortgage loans	173,916	176,022
Percentage of loan receivable in aggregate loan receivable	100.00%	100.00%
Commercial Mortgage Loans [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, commercial mortgage loans	158,769	159,994
Percentage of loan receivable in aggregate loan receivable	91.30%	90.90%
Commercial Mortgage Loans [Member] | OAEM [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, commercial mortgage loans	1,404
Percentage of loan receivable in aggregate loan receivable	0.80%
Commercial Mortgage Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, commercial mortgage loans	9,747	12,917
Percentage of loan receivable in aggregate loan receivable	5.60%	7.30%
Commercial Mortgage Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross, commercial mortgage loans	3,996	3,111
Percentage of loan receivable in aggregate loan receivable	2.30%	1.80%
SBA 7(a) Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
SBA 7(a) loans receivable, gross, excluding secured borrowings	28,195	28,196
Percentage of loan receivable in aggregate loan receivable	100.00%	100.00%
SBA 7(a) Loans [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
SBA 7(a) loans receivable, gross, excluding secured borrowings	26,795	27,755
Percentage of loan receivable in aggregate loan receivable	95.00%	98.50%
SBA 7(a) Loans [Member] | OAEM [Member]
Financing Receivable, Recorded Investment [Line Items]
SBA 7(a) loans receivable, gross, excluding secured borrowings	470	81
Percentage of loan receivable in aggregate loan receivable	1.70%	0.30%
SBA 7(a) Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
SBA 7(a) loans receivable, gross, excluding secured borrowings	270	126
Percentage of loan receivable in aggregate loan receivable	1.00%	0.40%
SBA 7(a) Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
SBA 7(a) loans receivable, gross, excluding secured borrowings	$ 660	$ 234
Percentage of loan receivable in aggregate loan receivable	2.30%	0.80%