Mortgage and Other Loans - Summary of Mortgage and Other Loans (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014
Debt Instrument [Line Items]
Mortgage and other loans, net		$ 290,878		$ 290,738
Mortgages
Debt Instrument [Line Items]
Mortgage and other loans, net		265,878		265,738
Revolving Line of Credit | FHB Credit Facility
Debt Instrument [Line Items]
Mortgage and other loans, net	[1]	$ 25,000		$ 25,000
Effective interest rate at period end		1.10%	[1]	1.10%
Description of variable rate basis		effective rate of interest paid by the lender on time certificates of deposit
Basis spread on variable rate		1.00%
Clifford Center | Mortgages
Debt Instrument [Line Items]
Secured Debt, Net of Discount, Held For Sale				$ 6,300
Pan Am Building | Mortgages | Mortgage Loan 6.17%
Debt Instrument [Line Items]
Mortgage and other loans, net		$ 59,997		$ 59,991
Interest rate		6.17%		6.17%
Waterfront Plaza | Mortgages | Mortgage Loan 6.37% (may be defeased)
Debt Instrument [Line Items]
Mortgage and other loans, net		$ 100,000		$ 100,000
Interest rate		6.37%		6.37%
Waterfront Plaza | Mortgages | Mortgage Loan 6.37%
Debt Instrument [Line Items]
Mortgage and other loans, net		$ 11,000		$ 11,000
Interest rate		6.37%		6.37%
Davies Pacific Center | Mortgages | Mortgage Loan 5.86%
Debt Instrument [Line Items]
Mortgage and other loans, net		$ 94,881		$ 94,747
Interest rate		5.86%		5.86%

[1] The revolving line of credit matures on December 31, 2016. Amounts borrowed under the revolving line of credit bear interest at a fluctuating annual rate equal to the effective rate of interest paid by the lender on time certificates of deposit, plus 1.00%. See “Revolving Line of Credit” below.