Investments in Unconsolidated Real Estate Joint Ventures (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 3 Months Ended | 1 Months Ended | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2013
|
Dec. 31, 2012
|
Jun. 30, 2013
Deer Park [Member]
sqft
|
Dec. 31, 2012
Deer Park [Member]
sqft
|
Dec. 31, 2011
Deer Park [Member]
Mezzanine and Senior Loans Combined [Member]
|
Jun. 30, 2013
Deer Park [Member]
Mezzanine Loan [Member]
|
Jun. 30, 2013
Deer Park [Member]
Mezzanine Loan [Member]
|
Jun. 30, 2013
Deer Park [Member]
Senior Loans [Member]
|
Jun. 30, 2013
Deer Park [Member]
Senior Loans [Member]
|
Jun. 30, 2013
Deer Park Warehouse [Member]
|
Dec. 31, 2012
Deer Park Warehouse [Member]
sqft
|
Jun. 30, 2013
National Harbor [Member]
sqft
store
|
Jun. 30, 2013
National Harbor [Member]
sqft
store
|
Dec. 31, 2012
National Harbor [Member]
sqft
|
Mar. 31, 2013
Cookstown [Member]
|
Jun. 30, 2013
Cookstown [Member]
sqft
store
|
Jun. 30, 2013
Ottawa [Member]
store
sqft
|
Jun. 30, 2013
Westgate [Member]
|
Dec. 31, 2012
Westgate [Member]
sqft
|
Jul. 31, 2013
Subsequent Event [Member]
Deer Park [Member]
Mezzanine and Senior Loans Combined [Member]
|
|
Schedule of Equity Method Investments [Line Items] | ||||||||||||||||||||
Equity method investments | $ 162.1 | $ 126.6 | $ 2.0 | $ 3.0 | $ 0 | $ 17.3 | $ 17.3 | $ 2.6 | $ 16.8 | $ 19.1 | ||||||||||
Secured debt | 246.9 | |||||||||||||||||||
Interest rate terms | LIBOR + 5.00% | LIBOR + 3.50% | ||||||||||||||||||
Debt Instrument, Default Interest Rate | LIBOR + 9% | PRIME + 7.5% | ||||||||||||||||||
Joint Venture Required Additional Principal Payment | 10 | |||||||||||||||||||
Debt Instrument, Periodic Payment, Principal | 10 | |||||||||||||||||||
Tanger's Portion of Principal Payment | 5 | |||||||||||||||||||
Proceeds from sale of foreclosed assets | 1.2 | |||||||||||||||||||
Number of outlet stores | 80 | 80 | 35 | 80 | ||||||||||||||||
Estimated square footage of real estate property when completed | 340,000 | |||||||||||||||||||
Company portion of contributed capital to the joint venture | 17.2 | |||||||||||||||||||
Joint Venture Debt | 62.0 | 62.0 | ||||||||||||||||||
Interst Rate, Basis Spread on Variable Rate | 1.65% | |||||||||||||||||||
Joint Venture Debt Outstanding | 336.3 | 325.2 | 246.9 | 246.9 | 1.9 | 4.2 | 4.2 | 0 | 42.2 | 32.0 | ||||||||||
Payments to acquire real estate | $ 13.9 | $ 28.7 | ||||||||||||||||||
Estimated Square Feet of Expansion | 153,000 | |||||||||||||||||||
Area of Real Estate Property | 741,981 | 741,981 | 29,253 | 0 | 0 | 0 | 303,000 | 332,234 |