Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Investments in real estate, variable interest entities	$ 65,523	$ 65,275
Cash and cash equivalents	102,512	112,512
Restricted cash held in escrows, variable interest entities	6,116	7,340
Allowances on accounts receivable	63	414
Allowance on accrued rental income	354	0
Lease intangibles, variable interest entities	19,466	20,043
Mortgage loans payable, variable interest entities	91,170	90,404
Notes payable, variable interest entities	1,024	942
Below market lease intangibles, variable interest entities	488	527
Series D Cumulative Redeemable Preferred Shares, liquidation preference	$ 25	$ 25
Series D Cumulative Redeemable Preferred Shares, shares authorized	5,060,000	5,060,000
Series D Cumulative Redeemable Preferred Shares, shares issued	4,820,000	4,820,000
Series D Cumulative Redeemable Preferred Shares, shares outstanding	4,820,000	4,820,000
Common Shares, par value	$ 1	$ 1
Common Shares, shares authorized
Common Shares, shares issued	36,409,710	36,401,438
Common Shares, shares outstanding	36,409,710	36,401,438
Variable Interest Entities [Member]
Cash and cash equivalents	$ 1,530	$ 1,163