Basis of Presentation (Details)	1 Months Ended
	Mar. 31, 2012	Mar. 12, 2012 property
Industrial and Other
Organization
Properties owned	199
SIR
Organization
Issuance of shares, net	9,200,000
Properties owned		23
Less than wholly owned subsidiary, common shares owned	22,000,000
Less than wholly owned subsidiary, parent ownership percentage	70.50%