Fair Values - Schedule of Range of Key Assumptions for Each Type of Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Book Value	$ 38,400	$ 40,700
Hotel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	7.00%	7.00%
Recovery Percentage	100.00%	100.00%
Book Value	15,000	15,000
Book Value Sensitivity to a 100 bp Discount Rate Increase	(0.40%)	(1.40%)
Office [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recovery Percentage	100.00%	100.00%
Book Value	$ 23,400	$ 25,700
Book Value Sensitivity to a 100 bp Discount Rate Increase	(0.30%)	(0.30%)
Office [Member] | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	8.00%	6.00%
Office [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Discount Rate	15.00%	15.00%