Loans Receivable, net - Additional Information (Detail) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Concentrations of investments in hospitality industry	94.00%		94.00%
Loans collateralized by properties	13.00%		15.00%
State loan receivable concentration	10.00%		10.00%
Maximum loans receivable single borrower	10.00%		10.00%
Loans receivable affiliated group of obligors	5.00%		5.00%
Provision for loan losses	0.37%	0.41%
Recorded investment in non accrual loans	$ 6,941,000		$ 5,768,000
Government guaranteed portion of loan related secured borrowing on non accrual status	1,123,000		634,000
Loans receivable past due 90 days or more which were accruing interest	0		0
Loans receivable past due	90 days		90 days
Voluntary modification of loans recorded investment	4,100,000
Involuntary modification due to bankruptcy loans recorded investment	5,800,000
Modified loans no longer complying with their terms	8,400,000
SBA 7(a) Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance of SBA 7(a) loans, net of retained loans discount	2,500,000		2,100,000
Recorded investment in non accrual loans	1,583,000		855,000
SBA 7(a) loans, subject to secured borrowings [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
SBA 7(a) loans, subject to secured borrowings	36,585,000		37,909,000
Commercial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment in commercial mortgage non accrual loans	$ 5,358,000		$ 4,913,000