Income Taxes (Effective Income Tax Rate Reconciliation, Percent) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%
State and local income taxes	1.30%	0.70%	12.60%
Nondeductible transaction costs	0.00%	0.00%	9.20%
REIT conversion benefit	(31.30%)	(31.80%)	(4.30%)
Permanent differences	0.00%	0.00%	(0.90%)
Other miscellaneous items	0.50%	(0.30%)	(0.40%)
Effective income tax rate reconciliation, effective income tax rate, percent	5.50%	3.60%	51.20%