Organization - Schedule of Portfolio (Details)	Dec. 31, 2015 ft² building property	Dec. 31, 2014 ft² property	Mar. 31, 2014 ft²
Segment Reporting Information [Line Items]
Number of Properties | property		31
Square Footage | ft²		5,600,000	5,641,450
Consolidated portfolio
Segment Reporting Information [Line Items]
Number of Properties | property	65
Number of Buildings | building	127
Square Footage | ft²	23,952,000