Commitments and Contingencies - Tanger Factory Outlets - Additional Information (Detail) $ in Millions	Jul. 17, 2015 USD ($) a ft² Job Stores	Jul. 16, 2015 a	Jun. 30, 2015 ft²
Loss Contingencies [Line Items]
Area of real estate property | ft²			1,160,000
First Class Outlet Mall [Member] | Tanger Factory Outlets [Member] | Scenario, Forecast [Member]
Loss Contingencies [Line Items]
Possible new brand and designer stores addition | Stores	85
First Class Outlet Mall [Member] | Tanger Factory Outlets [Member] | Construction Phase [Member] | Scenario, Forecast [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] | Scenario, Forecast [Member]
Loss Contingencies [Line Items]
Potential jobs creation | Job	800
Subsequent Event [Member]
Loss Contingencies [Line Items]
Area of real estate property | a		3.40
Subsequent Event [Member] | Definitive Sales Contracts [Member] | Tanger Factory Outlets [Member]
Loss Contingencies [Line Items]
Area of real estate property | a	39
Subsequent Event [Member] | First Class Outlet Mall [Member] | Tanger Factory Outlets [Member]
Loss Contingencies [Line Items]
Reimbursement of infrastructure costs	$ 4.5
Real estate investments	$ 100.0
Subsequent Event [Member] | First Class Outlet Mall [Member] | Definitive Sales Contracts [Member] | Tanger Factory Outlets [Member]
Loss Contingencies [Line Items]
Area of real estate property | ft²	380,000