Loans Receivable - Additional Information (Detail)	1 Months Ended	7 Months Ended	12 Months Ended
	Aug. 31, 2013 USD ($)	Jul. 31, 2014 USD ($) Loans	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($) Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, accrued interest			$ 28,000	$ 218,000
Weighted average coupon rate on loans receivable			7.97%	10.55%
Weighted average yield to maturity			13.54%	12.78%
Provision for loan loss		$ 0			$ 348,000
Number of non-performing loans with past due payments | Loans		1			1
Period for the return of assets			2 years
Annual interest rate	15.00%
Lender LP [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured financing receivable	$ 30,000,000
Elad Canada Ltd [Member] | Lender LP [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Rate of interest for acquisition	50.00%
Secured Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income		$ 2,215,000			$ 1,386,000
The Shops at Wailea [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue threshold percentage for major customer		10.00%
The Shops at Wailea [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest on income of the trust from entity major customers		58.00%
San Marbeya Loan [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest on income of the trust from entity major customers					34.00%
Queensridge Loan [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest on income of the trust from entity major customers					34.00%