Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Option Awards (Details)

v3.20.4
Equity-Based Compensation - Option Awards (Details) - Tanger Factory Outlet Centers, Inc. [Member]
 12 Months Ended
Dec. 31, 2020
$ / shares
shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Options Outstanding, Options | shares 1,805,700
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares $ 17.76
Options Outstanding, Weighted remaining contractual life in years 6 years 21 days
Options Exercisable, Options | shares 310,300
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares $ 28.61
Exercise price one [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Options Outstanding, Options | shares 334,000
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares $ 5.73
Options Outstanding, Weighted remaining contractual life in years 9 years 8 months 8 days
Options Exercisable, Options | shares 0
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares $ 5.73
Exercise price two [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Options Outstanding, Options | shares 1,000,000
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares $ 7.15
Options Outstanding, Weighted remaining contractual life in years 9 years 4 months 13 days
Options Exercisable, Options | shares 250,000
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares $ 7.15
Exercise price three [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Options Outstanding, Options | shares 269,000
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares $ 21.94
Options Outstanding, Weighted remaining contractual life in years 7 years 2 months 15 days
Options Exercisable, Options | shares 107,600
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares $ 21.94
Exercise Price Four [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Options Outstanding, Options | shares 57,200
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares $ 26.06
Options Outstanding, Weighted remaining contractual life in years 1 month 24 days
Options Exercisable, Options | shares 57,200
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares $ 26.06
Exercise Price Five [Member]  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Options Outstanding, Options | shares 145,500
Options Outstanding, Weighted average exercise price (in dollars per share) | $ / shares $ 32.02
Options Outstanding, Weighted remaining contractual life in years 3 years
Options Exercisable, Options | shares 145,500
Options Exercisable, Weighted average exercise price (in dollars per share) | $ / shares $ 32.02