Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Other Assets [Line Items]
Other assets	$ 12,185	$ 23,921
Prepaid Expenses
Other Assets [Line Items]
Other assets	3,666	3,546
Prepaid Compensation
Other Assets [Line Items]
Other assets	3,281
Accounts Receivable
Other Assets [Line Items]
Other assets	1,496	439
Debt Issuance Costs, Net [Member]
Other Assets [Line Items]
Other assets	1,092
Loan Servicing Assets at Fair Value
Other Assets [Line Items]
Other assets	1,034	534
Receivable from Investors
Other Assets [Line Items]
Other assets	536	18,116
Tenant Improvement Receivable
Other Assets [Line Items]
Other assets	376	504
Deposits
Other Assets [Line Items]
Other assets	216	193
Other
Other Assets [Line Items]
Other assets	$ 488	$ 589