Loans Receivable, net - Aging of Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 199,307	$ 198,282
Between 29 and 59 days delinquent	1,556	2,824
Between 60 and 89 days delinquent		1
Over 89 days delinquent	1,340	3,111
Loans receivable, gross, excluding secured borrowings	202,203	204,218
Current	98.50%	97.10%
Between 29 and 59 days delinquent	0.80%	1.40%
Between 60 and 89 days delinquent
Over 89 days delinquent	0.70%	1.50%
Aging of loans receivable percent	100.00%	100.00%
Commercial Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	169,570	170,429
Between 29 and 59 days delinquent	968	2,482
Between 60 and 89 days delinquent
Over 89 days delinquent	1,340	3,111
Loans receivable, gross, commercial mortgage loans	171,878	176,022
Current	98.60%	96.80%
Between 29 and 59 days delinquent	0.60%	1.40%
Between 60 and 89 days delinquent
Over 89 days delinquent	0.80%	1.80%
Aging of loans receivable percent	100.00%	100.00%
SBA 7(a) Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	29,737	27,853
Between 29 and 59 days delinquent	588	342
Between 60 and 89 days delinquent		1
Over 89 days delinquent
SBA 7(a) loans receivable, gross, excluding secured borrowings	$ 30,325	$ 28,196
Current	98.10%	98.80%
Between 29 and 59 days delinquent	1.90%	1.20%
Between 60 and 89 days delinquent
Over 89 days delinquent
Aging of loans receivable percent	100.00%	100.00%