Loans Receivable, net - Loan Loss Reserves (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of year	$ 3,413	$ 1,812
Provision for loan losses	758	816
Reduction of loan losses	(344)	(223)
Principal balances written-off		(799)
Balance, end of period	3,827	1,606
Commercial Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of year	2,850	1,329
Provision for loan losses	494	726
Reduction of loan losses	(342)	(194)
Principal balances written-off		(627)
Balance, end of period	3,002	1,234
SBA 7(a) Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of year	563	483
Provision for loan losses	264	90
Reduction of loan losses	(2)	(29)
Principal balances written-off		(172)
Balance, end of period	$ 825	$ 372