Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income tax expense (benefit) [Abstract]
State current	$ 1	$ 47	$ 1,520	$ 298
Deferred State and Local Income Tax Expense (Benefit)	(4)	(34)	(16)	(59)
Federal current	313	160	7,851	468
Federal deferred	(26)	(38)	1,139	251
Foreign current	399	1,353	980	1,983
Foreign deferred		(35)	(48)	(226)
Income Tax Expense (Benefit), Gross of Tax on Gain	683	1,453	11,426	2,715
Gain (Loss) on Sale of Properties, Applicable Income Taxes			9,733
Total income tax expense	683	1,453	1,693	2,715
Deferred tax assets:
Deferred tax assets	3,979		3,979		5,094
Valuation allowances	(1,783)		(1,783)		(1,831)
Net deferred tax assets	2,196		2,196		3,263
Deferred tax liabilities:
Deferred tax liabilities	1,167		1,167		1,158
Tax impact of share-based compensation from redemption of share-based compensation awards			71	405
Domestic Country [Member]
Deferred tax assets:
Deferred tax assets	1,607		1,607		2,746
Deferred tax liabilities:
Deferred tax liabilities	602		602		602
Foreign Country [Member]
Deferred tax assets:
Deferred tax assets	1,822		1,822		1,821
Deferred tax liabilities:
Deferred tax liabilities	474		474		449
State and Local Jurisdiction [Member]
Deferred tax assets:
Deferred tax assets	550		550		527
Deferred tax liabilities:
Deferred tax liabilities	91		91		107
International Plaza [Member]
Income tax expense (benefit) [Abstract]
Gain (Loss) on Sale of Properties, Applicable Income Taxes			9,700
Additional Paid-in Capital [Member]
Deferred tax liabilities:
Tax impact of share-based compensation from redemption of share-based compensation awards			$ 71	$ 405