Fair Values - Schedule of Range of Key Assumptions for Each Type of Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	15.00%
Book Value	$ 117,549
Hotel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Book Value	51,700
Book Value Sensitivity to 100 bps Discount Rate Increase	(0.30%)
Hotel [Member] | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	8.00%
Recovery Percentage	84.00%
Hotel [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	12.00%
Recovery Percentage	100.00%
Mixed Use / Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	10.00%
Recovery Percentage	100.00%
Book Value	24,100
Book Value Sensitivity to 100 bps Discount Rate Increase	(0.10%)
Office [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Book Value	$ 41,700
Book Value Sensitivity to 100 bps Discount Rate Increase	0.05%
Office [Member] | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	7.00%
Recovery Percentage	69.00%
Office [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	20.00%
Recovery Percentage	100.00%