Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Significant Accounting Policies

Schedule of supplemental disclosures related to the Consolidated and Combined Statements of Cash Flows

	STAG Industrial, Inc. (Six Months Ended June 30, 2012)			STAG Industrial, Inc. (Period from April 20, 2011 to June 30, 2011)			STAG Predecessor Group (Period from January 1, 2011 to April 19, 2011)
Supplemental cash flow information
Cash paid for interest	$	7,895		$	2,927		$	2,433
Supplemental schedule of noncash investing and financing activities
Acquisition of tangible assets	$	—		$	(204,116	)	$	—
Acquisition of goodwill upon formation transactions	$	—		$	(4,923	)	$	—
Acquisition of intangible assets upon formation transactions	$	—		$	(83,442	)	$	—
Assumption of mortgage notes payable	$	—		$	190,548		$	—
Fair market value adjustment to mortgage notes payable acquired	$	—		$	141		$	—
Assumption of related party notes payable upon formation transactions	$	—		$	4,466		$	—
Acquisition of intangible liabilities upon formation transactions	$	—		$	1,066		$	—
Acquisition of interest rate swaps upon formation transactions included in the purchase price allocation	$	—		$	420		$	—
Acquisition of other liabilities upon formation transactions	$	—		$	171		$	—
Issuance of units for acquisition of net assets upon formation transactions	$	—		$	95,670		$	—
Disposition of accrued lender fees upon formation transactions	$	—		$	—		$	4,420
Assumption of bridge loan for Option Properties upon formation transactions	$	—		$	—		$	(4,750	)
Assumption of note payable to related party for Option Properties upon formation transactions	$	—		$	—		$	(727	)
Assumption of interest rate swaps to related party for Option Properties upon formation transactions	$	—		$	—		$	(352	)
Noncash investing activities included in additions of land and building improvements	$	(303	)	$	—		$	—
Dividends and distributions declared but not paid	$	10,287		$	—		$	—
Accrued distribution upon formation transactions	$	—		$	—		$	(1,392	)