Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2013

Stockholders' Equity Attributable to Parent [Abstract]

Schedule Reconciling Dividends Paid and Dividends Applied to Meet REIT Distribution Requirements [Table Text Block]

The following reconciles dividends paid and dividends applied in 2013, 2012, and 2011 to meet REIT distribution requirements (in thousands):

	2013			2012			2011
Common and preferred dividends paid	$	37,200		$	31,655		$	31,556
Dividends treated as taxable compensation	(98		)	(147		)	(70		)
Portion of dividends declared in current year, and paid in current year, which was applied to the prior year distribution requirements	(470		)	—			(304		)
Portion of dividends declared in subsequent year, and paid in subsequent year, which apply to current year distribution requirements	—			470			(10		)
Dividends applied to meet current year REIT distribution requirements	$	36,632		$	31,978		$	31,172

Schedule of Components of Taxability of Company Dividends [Table Text Block]

The following summarizes the components of the taxability of the Company’s distributions for the years ended December 31, 2013, 2012, and 2011:

	Total  Distributions Per Share		Ordinary Dividends		Long-Term Capital Gain		Unrecaptured Section 1250 Gain (A)		Cash Liquidation Distributions
Common:
2013	$	0.180000	$	0.170355	$	0.009645	$	0.009457	$	—
2012	$	0.180000	$	0.124724	$	0.055276	$	0.055276	$	—
2011	$	0.180000	$	0.067853	$	0.112147	$	0.042574	$	—
Series A Preferred:
2013	$	0.968750	$	0.966882	$	0.001868	$	—	$	25.000000
2012	$	1.937500	$	1.342220	$	0.595280	$	0.595280	$	—
2011	$	1.937500	$	0.730053	$	1.207447	$	0.458393	$	—
Series B Preferred:
2013	$	1.875000	$	1.774673	$	0.100327	$	0.098519	$	—
2012	$	1.875000	$	1.298222	$	0.576078	$	0.576078	$	—
2011	$	1.875000	$	0.706502	$	1.168498	$	0.443606	$	—

(A) Represents a portion of the dividend allocated to long-term capital gain.