Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Share-based Compensation [Abstract]

Schedule of Share-based Payment Award: Valuation Assumptions

As mentioned above, the fair value of the LTIP Unit Awards at issuance was determined by a lattice-binomial option-pricing model based on a Monte Carlo simulation using the following assumptions:

Expected dividend yield	2.22	%
Expected volatility - range used	24.28% - 34.66%
Expected volatility - weighted average	30.61	%
Risk-free interest rate	0.03% - 0.71%
Expected term	1 - 2.5 years

Summary of Restricted Stock Award and Restricted Stock Unit Award Transactions

Restricted stock and unit award and LTIP Unit Award transactions for the year ended December 31, 2014 are summarized as follows:

	Awards		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2013 (Restricted Stock and Unit and LTIP Unit Awards)	1,281,221		$	9.72
Issued (Restricted Stock Awards)	319,055		$	18.06
Forfeited (Restricted Stock and Unit and LTIP Unit Awards)	(105,346	)	$	5.83
Vested (Restricted Stock and LTIP Unit Awards)	(678,212	)	$	10.69
Outstanding at December 31, 2014 (Restricted Stock and LTIP Unit Awards)	816,718		$	12.68