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Equity-Based Compensation of the Operating Partnership (Tanger Properties Limited Partnership [Member]) | 12 Months Ended
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Dec. 31, 2012
Tanger Properties Limited Partnership [Member] |
Equity-Based Compensation of the Operating Partnership | Equity-Based Compensation of the Operating Partnership As discussed in Note 16, the Operating Partnership and the Company have a joint plan whereby equity based and performance based awards may be granted to directors, officers and employees. When common shares are issued by the Company, the Operating Partnership issues corresponding units to the Company based on the current exchange ratio as provided by the Operating Partnership agreement. Based on the current exchange ratio, each unit in the Operating Partnership is equivalent to four common shares of the Company. Therefore, when the Company grants an equity based award, the Operating Partnership treats each award as having been granted by the Operating Partnership. The maximum units that may be issued to the Company due to equity awards granted by the Company are limited by the Plan to 15.4 million of the Company's common shares, or in terms of units, 3,850,000 units. Units available to satisfy future equity based awards by the Company at December 31, 2012 totaled 886,355. The tables below set forth the unit based compensation expense and other related information as recognized in the Operating Partnership's consolidated financial statements. We recorded equity-based compensation expense in general and administrative expenses in the consolidated statements of operations for the years ended December 31, 2012, 2011 and 2010, respectively, as follows (in thousands):
|  | 2012 |  | 2011 |  | 2010
Restricted units (1) |  | $ | 8,485 |  |  | $ | 5,227 |  |  | $ | 4,095 |
Notional unit performance awards |  | 1,970 |  |  | 1,885 |  |  | 1,753 |
Options |  | 209 |  |  | 179 |  |  | — |
Total equity based compensation |  | $ | 10,664 |  |  | $ | 7,291 |  |  | $ | 5,848 |
(1) For the twelve months ended December 31, 2012, includes approximately $1.3 million of compensation expense related to 11,250 units issued related to a restricted share grant that vested immediately pursuant to the Employment Agreement as described in footnote 16. Equity-based compensation expense capitalized as a part of rental property and deferred lease costs during the years ended December 31, 2012, 2011 and 2010 was $368,000, $234,000 and $393,000, respectively. Options outstanding at December 31, 2012 had the following weighted average exercise prices and weighted average remaining contractual lives:
|  | Options Outstanding |  |  |  | Options Exercisable
Range of exercise prices |  | Options |  | Weighted average exercise price |  | Weighted remaining contractual life in years |  | Options |  | Weighted average exercise price
$38.83 |  | 10,250 |  |  | $ | 38.83 |  |  | 1.32 |  | 10,250 |  |  | $ | 38.83 |
$47.25 |  | 3,000 |  |  | 47.25 |  |  | 1.84 |  | 3,000 |  |  | 47.25 |
$104.24 |  | 40,700 |  |  | 104.24 |  |  | 8.14 |  | 7,000 |  |  | 104.24 |
|  | 53,950 |  |  | $ | 88.64 |  |  | 6.50 |  | 20,250 |  |  | $ | 62.69 |
A summary of option activity under our Amended and Restated Incentive Award Plan as of December 31, 2012 and changes during the year then ended is presented below (aggregate intrinsic value amount in thousands):
Options |  | Units |  | Weighted-average exercise price |  | Weighted-average remaining contractual life in years |  | Aggregate intrinsic value
Outstanding as of December 31, 2011 |  | 65,300 |  |  | $ | 83.66 |  |  |  |  |
Granted |  | — |  |  | — |  |  |  |  |
Exercised |  | (9,425 | ) |  | 50.96 |  |  |  |  |
Forfeited |  | (1,925 | ) |  | 104.24 |  |  |  |  |
Outstanding as of December 31, 2012 |  | 53,950 |  |  | $ | 88.64 |  |  | 6.50 |  | $ | 2,583 |
Vested and Expected to Vest as of |  |  |  |  |  |  |  |
December 31, 2012 |  | 45,691 |  |  | $ | 85.82 |  |  | 6.20 |  | $ | 2,316 |
Exercisable as of December 31, 2012 |  | 20,250 |  |  | $ | 62.69 |  |  | 3.74 |  | $ | 1,495 |
The total intrinsic value of options exercised during the years ended December 31, 2012, 2011 and 2010 was $716,000, $652,000 and $1.7 million, respectively. The following table summarizes information related to unvested restricted units outstanding as of December 31, 2012:
Unvested Restricted Units |  | Number of units |  | Weighted average grant date fair value
Unvested at December 31, 2011 |  | 197,834 |  |  | $ | 83.70 |
Granted |  | 142,750 |  |  | 111.59 |
Vested |  | (77,336 | ) |  | 87.69 |
Forfeited |  | (1,250 | ) |  | 118.00 |
Unvested at December 31, 2012 |  | 261,998 |  |  | $ | 97.56 |
The total value of restricted units vested during the years ended 2012, 2011 and 2010 was $10.6 million, $7.1 million and $4.7 million, respectively. As of December 31, 2012, there was $20.0 million of total unrecognized compensation cost related to unvested equity-based compensation arrangements granted under the Plan. That cost is expected to be recognized over a weighted-average period of 3.4 years.

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- Definition Disclosure of Compensation Related Costs Equity Based Payments [Text Block] Disclosure of equity based compensation at the Operating Partnership level in units. + References No definition available. + Details
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