Summary of Quarterly Results (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

The following is a summary of quarterly financial information as of and for the years ended December 31, 2014 and 2013 (in thousands, except per share data):

	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
2014
Total revenue	$	152,114		$	150,500	$	146,558	$	147,810
Net income (loss)	(2,245		)	2,174		8,882		(1,869		)
Net income (loss) allocated to Common Shares	(4,041		)	385		6,967		(3,585		)
Basic earnings (loss) per Common Share	$	(0.03	)	$	—	$	0.04	$	(0.02	)
Diluted earnings (loss) per Common Share	$	(0.03	)	$	—	$	0.04	$	(0.02	)
2013
Total revenue	$	139,554		$	140,664	$	143,354	$	138,658
Net income	3,919			7,180		11,088		21,002
Net income allocated to Common Shares	2,058			5,308		9,173		18,975
Basic earnings per Common Share	$	0.01		$	0.03	$	0.06	$	0.12
Diluted earnings per Common Share	$	0.01		$	0.03	$	0.06	$	0.12