Properties (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Schedule of Real Estate Properties [Table Text Block]

Properties at December 31, 2015 and December 31, 2014 are summarized as follows:

	2015			2014
Land	$	243,870		$	226,252
Buildings, improvements, and equipment	3,107,338			2,457,660
Construction in process and pre-development costs	362,007			578,593
	$	3,713,215		$	3,262,505
Accumulated depreciation and amortization	(1,052,027		)	(970,045		)
	$	2,661,188		$	2,292,460