Non-Cash Activities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Nonmonetary Transactions [Abstract]
Costs relating to construction included in accounts payable and accrued expenses	$ 27,090	$ 20,340

Expenditures Included In Construction Trade Payables

No definition available.

Name:	skt_ExpendituresIncludedInConstructionTradePayables
Namespace Prefix:	skt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant