Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events: On January 18, 2017, the Company sold Cascade Mall, a 589,000 square foot regional shopping center in Burlington, Washington; and Northgate Mall, a 750,000 square foot regional shopping center in San Rafael, California, in a combined transaction for $170,000. The proceeds were used to payoff the mortgage note payable on Northgate Mall, pay down the Company's line of credit and for general corporate purposes. On February 1, 2017, the Company's joint venture in West Acres replaced the existing loan on the property with a new $80,000 loan that bears interest at an effective rate of 4.61% and matures on March 1, 2032. The Company used its share of the excess proceeds to pay down its line of credit and for general corporate purposes. On February 2, 2017, the Company's joint venture in Kierland Commons entered into a loan commitment with a lender to replace the existing loan on the property with a new $225,000 loan that will bear interest at a fixed rate of 3.95% for ten-years. The new loan is expected to close in March 2017. The Company expects to use its share of the excess proceeds to pay down its line of credit and for general corporate purposes. On February 9, 2017, the Company announced a dividend/distribution of $0.71 per share for common stockholders and OP Unit holders of record on February 21, 2017. All dividends/distributions will be paid 100% in cash on March 3, 2017. On February 13, 2017, the Company announced that the Board of Directors has authorized the repurchase of up to $500,000 of its outstanding common shares as market conditions and the Company’s liquidity warrant. Repurchases may be made through open market purchases, privately negotiated transactions, structured or derivative transactions, including ASR transactions, or other methods of acquiring shares and pursuant to Rule 10b5-1 of the Securities Act of 1934, from time to time as permitted by securities laws and other legal requirements.

Subsequent Events:

On January 18, 2017, the Company sold Cascade Mall, a 589,000 square foot regional shopping center in Burlington, Washington; and Northgate Mall, a 750,000 square foot regional shopping center in San Rafael, California, in a combined transaction for $170,000. The proceeds were used to payoff the mortgage note payable on Northgate Mall, pay down the Company's line of credit and for general corporate purposes.

On February 1, 2017, the Company's joint venture in West Acres replaced the existing loan on the property with a new $80,000 loan that bears interest at an effective rate of 4.61% and matures on March 1, 2032. The Company used its share of the excess proceeds to pay down its line of credit and for general corporate purposes.

On February 2, 2017, the Company's joint venture in Kierland Commons entered into a loan commitment with a lender to replace the existing loan on the property with a new $225,000 loan that will bear interest at a fixed rate of 3.95% for ten-years. The new loan is expected to close in March 2017. The Company expects to use its share of the excess proceeds to pay down its line of credit and for general corporate purposes.

On February 9, 2017, the Company announced a dividend/distribution of $0.71 per share for common stockholders and OP Unit holders of record on February 21, 2017. All dividends/distributions will be paid 100% in cash on March 3, 2017.

On February 13, 2017, the Company announced that the Board of Directors has authorized the repurchase of up to $500,000 of its outstanding common shares as market conditions and the Company’s liquidity warrant. Repurchases may be made through open market purchases, privately negotiated transactions, structured or derivative transactions, including ASR transactions, or other methods of acquiring shares and pursuant to Rule 10b5-1 of the Securities Act of 1934, from time to time as permitted by securities laws and other legal requirements.