Income Taxes (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax expense (benefit) [Abstract]
Federal current				$ 2,238	$ 1,931	$ 8,036
Federal deferred				(1,310)	(34)	1,354
Foreign current				404	628	1,300
Foreign deferred				293	(114)	(48)
State current				782	(528)	1,361
State deferred				(195)	(72)	(3)
Total income tax expense				2,212	1,811	12,000
Less income tax (expense) benefit allocated to Gain on Dispositions (1)					437	(9,733)
Income tax expense as reported on the Consolidated Statement of Operations and Comprehensive Income				2,212	2,248	$ 2,267
Deferred tax assets:
Deferred Tax Assets, Gross				5,838	4,047
Deferred Tax Assets, Valuation Allowance				(1,812)	(1,913)
Deferred Tax Assets, Net of Valuation Allowance				4,026	2,134
Deferred tax liabilities:
Deferred Tax Liabilities, Net				$ 1,124	$ 1,173
Common Stock, Dividends, Per Share, Declared	$ 0.54			$ 2.3800	$ 2.2600	$ 2.1600
Common Stock, Dividends, Per Share, Designated as Capital Gain	0.0619
Common Stock, Dividends, Per Share, Designated as Return of Capital				0.0000	0.0972	0.3208
Common Stock, Dividends, Per Share, Designated as Ordinary Income				1.8427	2.1621	1.7773
Common Stock, Dividends, Per Share, Designated as Long Term Capital Gain				0.3929	0.0004	0.0287
Common Stock, Dividends, Per Share, Designated as Unrecaptured Sec. 1250 Capital Gain				$ 0.1444	$ 0.0003	0.0332
Domestic Tax Authority [Member]
Deferred tax assets:
Deferred Tax Assets, Gross				$ 3,230	$ 1,427
Deferred tax liabilities:
Deferred Tax Liabilities, Net					602
Foreign Country [Member]
Income tax expense (benefit) [Abstract]
Operating Loss Carryforwards				5,400
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration				$ 100
Operating Loss Carryforwards, Expiration Dates				10
Deferred tax assets:
Deferred Tax Assets, Gross				$ 1,673	1,676
Deferred tax liabilities:
Deferred Tax Liabilities, Net				1,124	501
State and Local Jurisdiction [Member]
Deferred tax assets:
Deferred Tax Assets, Gross				935	944
Deferred tax liabilities:
Deferred Tax Liabilities, Net					$ 70
Series J Preferred Stock [Member]
Deferred tax liabilities:
Preferred Stock, Dividends Per Share, Declared	0.40625	$ 0.40625	$ 0.40625	$ 1.6250	$ 1.6250	1.6250
Preferred Stock, Dividends Per Share, Designated as Ordinary Income				1.2581	1.6245	0.49072
Preferred Stock, Dividends, Per Share, Designated as Long Term Capital Gain	0.40625	0.40625	0.32178	0.2683	0.00030	0.5258
Preferred Stock, Dividends Per Share, Designated as Unrecaptured Sec. 1250 Capital Gain				0.0986	0.0002	0.60848
Series K Preferred Stock [Member]
Deferred tax liabilities:
Preferred Stock, Dividends Per Share, Declared	0.39063	0.39063	0.39063	1.56250	1.56250	1.56250
Preferred Stock, Dividends Per Share, Designated as Ordinary Income				1.2097	1.562	0.47185
Preferred Stock, Dividends, Per Share, Designated as Long Term Capital Gain	0.39063	$ 0.39063	$ 0.30939	0.2580	0.0003	0.50558
Preferred Stock, Dividends Per Share, Designated as Unrecaptured Sec. 1250 Capital Gain				$ 0.0948	$ 0.0002	0.58507
Special Dividend [Member]
Deferred tax liabilities:
Common Stock, Dividends, Per Share, Declared						4.7500
Common Stock, Special Dividend, Per Share, Designated as Capital Gain	$ 4.0443
Common Stock, Dividends, Per Share, Designated as Return of Capital						0.7057
Common Stock, Dividends, Per Share, Designated as Ordinary Income						0.0000
Common Stock, Dividends, Per Share, Designated as Long Term Capital Gain						1.8748
Common Stock, Dividends, Per Share, Designated as Unrecaptured Sec. 1250 Capital Gain						$ 2.1695
International Plaza [Member]
Income tax expense (benefit) [Abstract]
Less income tax (expense) benefit allocated to Gain on Dispositions (1)					$ 400	$ (9,700)
SPG Units [Member]
Income tax expense (benefit) [Abstract]
Income Tax Expense Recognized Upon Conversion of Simon Property Group Limited Partership units				$ 500