Dispositions:	12 Months Ended
Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Dispositions:	Dispositions: On May 31, 2013, the Company sold Green Tree Mall, a 793,000 square foot regional shopping center in Clarksville, Indiana, for $79,000, resulting in a gain on the sale of assets of $59,767. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On June 4, 2013, the Company sold Northridge Mall, an 890,000 square foot regional shopping center in Salinas, California, and Rimrock Mall, a 603,000 square foot regional shopping center in Billings, Montana. The properties were sold in a combined transaction for $230,000, resulting in a gain on the sale of assets of $82,151. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes. On September 11, 2013, the Company sold a former Mervyn's store in Milpitas, California for $12,000, resulting in a loss on the sale of assets of $2,633. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On September 30, 2013, the Company conveyed Fiesta Mall, a 933,000 square foot regional shopping center in Mesa, Arizona, to the mortgage note lender by a deed-in-lieu of foreclosure. The mortgage loan was non-recourse. As a result of the conveyance, the Company recognized a gain on the extinguishment of debt of $1,252. On October 15, 2013, the Company sold a former Mervyn's store in Midland, Texas for $5,700, resulting in a loss on the sale of assets of $2,031. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On October 23, 2013, the Company sold a former Mervyn's store in Grand Junction, Colorado for $5,430, resulting in a gain on the sale of assets of $1,695. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On December 4, 2013, the Company sold a former Mervyn's store in Livermore, California for $10,475, resulting in a loss on the sale of assets of $5,257. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On December 11, 2013, the Company sold Chesterfield Towne Center, a 1,016,000 square foot regional shopping center in Richmond, Virginia, and Centre at Salisbury, an 862,000 square foot regional shopping center in Salisbury, Maryland in a combined transaction for $292,500, resulting in a gain on the sale of assets of $151,467. The sales price was funded by a cash payment of $67,763, the assumption of the $109,737 mortgage note payable on Chesterfield Towne Center and the assumption of the $115,000 mortgage note payable on Centre at Salisbury. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes. The Company has classified the results of operations and gain or loss on sale for all of the above dispositions as discontinued operations for the year ended December 31, 2013. Revenues and income from discontinued operations were $54,752 and $289,936, respectively, for the year ended December 31, 2013. On January 1, 2014, the Company adopted ASU 2014-08, which amended the definition of discontinued operations and the disclosure for the disposal transactions. The Company determined that none of the disposals during the years ended December 31, 2015 and 2014 represented discontinued operations. As a result, the following dispositions during the year ended December 31, 2015 and 2014 have been included in continuing operations: On January 15, 2014, the Company sold Rotterdam Square, a 585,000 square foot regional shopping center in Schenectady, New York, for $8,500, resulting in a loss on the sale of assets of $472. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On February 14, 2014, the Company sold Somersville Towne Center, a 348,000 square foot regional shopping center in Antioch, California, for $12,337, resulting in a loss on the sale of assets of $263. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On March 17, 2014, the Company sold Lake Square Mall, a 559,000 square foot regional shopping center in Leesburg, Florida, for $13,280, resulting in a loss on the sale of assets of $876. The sales price was funded by a cash payment of $3,677 and the issuance of two notes receivable totaling $9,603 (See Note 6—Tenant and Other Receivables, net). The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes. On July 7, 2014, the Company sold a former Mervyn's store in El Paso, Texas for $3,560, resulting in a loss on the sale of assets of $158. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On August 28, 2014, the Company sold a former Mervyn's store in Thousand Oaks, California for $3,500, resulting in a loss on the sale of assets of $80. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On September 11, 2014, the Company sold a leasehold interest in a former Mervyn's store in Laredo, Texas for $1,200, resulting in a gain on the sale of assets of $315. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On October 10, 2014, the Company sold a former Mervyn's store in Marysville, California for $1,900, resulting in a loss on the sale of assets of $3. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On October 31, 2014, the Company sold South Towne Center, a 1,278,000 square foot regional shopping center in Sandy, Utah, for $205,000, resulting in a gain on the sale of assets of $121,873. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes. On December 29, 2014, the Company sold its 67.5% ownership interest in its consolidated joint venture in Camelback Colonnade, a 619,000 square foot community center in Phoenix, Arizona, for $92,898, resulting in a gain on the sale of assets of $24,554. The sales price was funded by a cash payment of $61,173 and the assumption of the Company's share of the mortgage note payable on the property of $31,725. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes. As a result of the sale, the Company was discharged of the $47,946 mortgage note payable on the property and $17,217 of noncontrolling interest was reversed. On June 30, 2015, the Company conveyed Great Northern Mall, an 895,000 square foot regional shopping center in Clay, New York, to the mortgage lender by a deed-in-lieu of foreclosure and was discharged from the mortgage note payable. The loan was nonrecourse to the Company. As a result, the Company recognized a loss on the extinguishment of debt of $1,627 (See Note 8—Mortgage Notes Payable). On November 19, 2015, the Company sold Panorama Mall, a 312,000 square foot community center in Panorama City, California, for $98,000, resulting in a gain on the sale of assets of $73,726. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

Dispositions:

On May 31, 2013, the Company sold Green Tree Mall, a 793,000 square foot regional shopping center in Clarksville, Indiana, for $79,000, resulting in a gain on the sale of assets of $59,767. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On June 4, 2013, the Company sold Northridge Mall, an 890,000 square foot regional shopping center in Salinas, California, and Rimrock Mall, a 603,000 square foot regional shopping center in Billings, Montana. The properties were sold in a combined transaction for $230,000, resulting in a gain on the sale of assets of $82,151. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.

On September 11, 2013, the Company sold a former Mervyn's store in Milpitas, California for $12,000, resulting in a loss on the sale of assets of $2,633. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On September 30, 2013, the Company conveyed Fiesta Mall, a 933,000 square foot regional shopping center in Mesa, Arizona, to the mortgage note lender by a deed-in-lieu of foreclosure. The mortgage loan was non-recourse. As a result of the conveyance, the Company recognized a gain on the extinguishment of debt of $1,252.

On October 15, 2013, the Company sold a former Mervyn's store in Midland, Texas for $5,700, resulting in a loss on the sale of assets of $2,031. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On October 23, 2013, the Company sold a former Mervyn's store in Grand Junction, Colorado for $5,430, resulting in a gain on the sale of assets of $1,695. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On December 4, 2013, the Company sold a former Mervyn's store in Livermore, California for $10,475, resulting in a loss on the sale of assets of $5,257. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On December 11, 2013, the Company sold Chesterfield Towne Center, a 1,016,000 square foot regional shopping center in Richmond, Virginia, and Centre at Salisbury, an 862,000 square foot regional shopping center in Salisbury, Maryland in a combined transaction for $292,500, resulting in a gain on the sale of assets of $151,467. The sales price was funded by a cash payment of $67,763, the assumption of the $109,737 mortgage note payable on Chesterfield Towne Center and the assumption of the $115,000 mortgage note payable on Centre at Salisbury. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.

The Company has classified the results of operations and gain or loss on sale for all of the above dispositions as discontinued operations for the year ended December 31, 2013. Revenues and income from discontinued operations were $54,752 and $289,936, respectively, for the year ended December 31, 2013. On January 1, 2014, the Company adopted ASU 2014-08, which amended the definition of discontinued operations and the disclosure for the disposal transactions. The Company determined that none of the disposals during the years ended December 31, 2015 and 2014 represented discontinued operations. As a result, the following dispositions during the year ended December 31, 2015 and 2014 have been included in continuing operations:

On January 15, 2014, the Company sold Rotterdam Square, a 585,000 square foot regional shopping center in Schenectady, New York, for $8,500, resulting in a loss on the sale of assets of $472. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On February 14, 2014, the Company sold Somersville Towne Center, a 348,000 square foot regional shopping center in Antioch, California, for $12,337, resulting in a loss on the sale of assets of $263. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On March 17, 2014, the Company sold Lake Square Mall, a 559,000 square foot regional shopping center in Leesburg, Florida, for $13,280, resulting in a loss on the sale of assets of $876. The sales price was funded by a cash payment of $3,677 and the issuance of two notes receivable totaling $9,603 (See Note 6—Tenant and Other Receivables, net). The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes.

On July 7, 2014, the Company sold a former Mervyn's store in El Paso, Texas for $3,560, resulting in a loss on the sale of assets of $158. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On August 28, 2014, the Company sold a former Mervyn's store in Thousand Oaks, California for $3,500, resulting in a loss on the sale of assets of $80. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On September 11, 2014, the Company sold a leasehold interest in a former Mervyn's store in Laredo, Texas for $1,200, resulting in a gain on the sale of assets of $315. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On October 10, 2014, the Company sold a former Mervyn's store in Marysville, California for $1,900, resulting in a loss on the sale of assets of $3. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On October 31, 2014, the Company sold South Towne Center, a 1,278,000 square foot regional shopping center in Sandy, Utah, for $205,000, resulting in a gain on the sale of assets of $121,873. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.

On December 29, 2014, the Company sold its 67.5% ownership interest in its consolidated joint venture in Camelback Colonnade, a 619,000 square foot community center in Phoenix, Arizona, for $92,898, resulting in a gain on the sale of assets of $24,554. The sales price was funded by a cash payment of $61,173 and the assumption of the Company's share of the mortgage note payable on the property of $31,725. The Company used the cash proceeds from the sale to pay down its line of credit and for general corporate purposes. As a result of the sale, the Company was discharged of the $47,946 mortgage note payable on the property and $17,217 of noncontrolling interest was reversed.

On June 30, 2015, the Company conveyed Great Northern Mall, an 895,000 square foot regional shopping center in Clay, New York, to the mortgage lender by a deed-in-lieu of foreclosure and was discharged from the mortgage note payable. The loan was nonrecourse to the Company. As a result, the Company recognized a loss on the extinguishment of debt of $1,627 (See Note 8—Mortgage Notes Payable).

On November 19, 2015, the Company sold Panorama Mall, a 312,000 square foot community center in Panorama City, California, for $98,000, resulting in a gain on the sale of assets of $73,726. The Company used the proceeds from the sale to pay down its line of credit and for general corporate purposes.