Loans Receivable, net - Loan Loss Reserves (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of year	$ 3,413	$ 1,812	$ 1,609
Provision for loan losses	1,679	2,505	826
Reduction of loan losses	(442)	(104)	(366)
Recoveries		(467)
Principal balances written-off, net	(1,366)	(333)	(257)
Balance, end of year	3,284	3,413	1,812
Commercial Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of year	2,850	1,329	1,303
Provision for loan losses	1,365	2,219	429
Reduction of loan losses	(438)	(70)	(342)
Recoveries		(467)
Principal balances written-off, net	(1,147)	(161)	(61)
Balance, end of year	2,630	2,850	1,329
SBA 7(a) Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of year	563	483	306
Provision for loan losses	314	286	397
Reduction of loan losses	(4)	(34)	(24)
Principal balances written-off, net	(219)	(172)	(196)
Balance, end of year	$ 654	$ 563	$ 483