Subsequent Events (Tables) (Cabot Industrial Value Fund III [Member], Subsequent Event [Member])

0 Months Ended

Oct. 08, 2013

Cabot Industrial Value Fund III [Member] | Subsequent Event [Member]

Subsequent Event [Line Items]

Business Acquisition, Pro Forma Information [Table Text Block]

	For the Three Months Ended				For the Nine Months Ended
	September 30, 2013		September 30, 2012		September 30, 2013		September 30, 2012
Total operating revenue	$	217,216	$	201,208	$	639,685	$	597,819
Net income available to common shareholders	$	31,212	$	28,172	$	150,716	$	99,495

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Assets
Real estate:
Land and land improvements	$	278,379
Building and improvements	1,121,350
Operating real estate	1,399,729
Intangible - in-place leases/market rent	98,008
Other assets	2,691
Total assets	1,500,428
Liabilities
Mortgage loans	242,455
Other liabilities	33,399
Intangible - market rent	5,737
Total liabilities	281,591
Net assets acquired	$	1,218,837