Commitments and Contingencies - Tanger Factory Outlets - Additional Information (Detail) $ in Millions	3 Months Ended
	Jun. 30, 2015 USD ($)	Sep. 30, 2015 USD ($) ft² a Job Store
Loss Contingencies [Line Items]
Area of real estate property | ft²		1,270,000
Definitive Sales Contracts [Member] | Tanger Factory Outlets [Member]
Loss Contingencies [Line Items]
Area of real estate property | a		39
First Class Outlet Mall [Member] | Tanger Factory Outlets [Member]
Loss Contingencies [Line Items]
Reimbursement of infrastructure costs	$ 4.5
Real estate investments		$ 100.0
Possible new brand and designer stores addition | Store		85
First Class Outlet Mall [Member] | Tanger Factory Outlets [Member] | Construction Phase [Member]
Loss Contingencies [Line Items]
Potential jobs creation | Job		400
First Class Outlet Mall [Member] | Tanger Factory Outlets [Member] | Following Construction Phase [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Potential jobs creation | a		800
First Class Outlet Mall [Member] | Definitive Sales Contracts [Member] | Tanger Factory Outlets [Member]
Loss Contingencies [Line Items]
Area of real estate property | ft²		350,000