Loans Receivable, net - Loans Considered to be Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Impaired loans requiring reserves	$ 10,958	$ 10,927
Impaired loans expected to be fully recoverable	2,178	2,244
Total impaired loans	13,136	13,171
Loan loss reserves	2,049	1,535
SBA 7(a) Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans requiring reserves	1,636	878
Impaired loans expected to be fully recoverable	119	121
Total impaired loans	1,755	999
Loan loss reserves	383	153
Commercial Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans requiring reserves	9,322	10,049
Impaired loans expected to be fully recoverable	2,059	2,123
Total impaired loans	11,381	12,172
Loan loss reserves	$ 1,666	$ 1,382