Consolidated and Combined Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Apr. 19, 2011 STAG Predecessor Group	Dec. 31, 2010 STAG Predecessor Group	Dec. 31, 2009 STAG Predecessor Group
Revenue
Rental income	$ 39,184	$ 7,027	$ 23,829	$ 24,979
Tenant recoveries	4,747	1,218	3,754	4,501
Other income	940
Total revenue	44,871	8,245	27,583	29,480
Expenses
Property	3,930	1,193	3,213	5,342
General and administrative	8,365	322	332	467
Real estate taxes and insurance	4,013	882	2,816	3,064
Asset management fees		175	585	585
Property acquisition costs	1,088
Depreciation and amortization	22,733	2,437	9,297	10,007
Other expenses	294
Total expenses	40,423	5,009	16,243	19,465
Other income (expense)
Interest income	28	1	16	66
Interest expense	(12,182)	(4,053)	(13,771)	(14,003)
Gain (loss) on interest rate swaps	2,179	762	(282)	(1,720)
Formation transaction costs	(3,674)
Offering costs	(78)
Total other income (expense)	(13,727)	(3,290)	(14,037)	(15,657)
Net loss from continuing operations	(9,279)	(54)	(2,697)	(5,642)
Discontinued operations
Income (loss) attributable to discontinued operations	(277)	(175)	(249)	82
Gain on sale of real estate	329
Total income (loss) attributable to discontinued operations	52	(175)	(249)	82
Net loss	(9,227)	(229)	(2,946)	(5,560)
Less: preferred stock dividends	1,018
Less: loss attributable to noncontrolling interest	(3,396)
Net loss attributable to the common stockholders	$ (6,849)
Weighted average common shares outstanding - basic (in shares)	15,630,910
Weighted average common shares outstanding - diluted (in shares)	15,630,910
Income (loss) per share - basic and diluted
Loss from continuing operations attributable to the common stockholders (in dollars per share)	$ (0.44)
Discontinued operations (in dollars per share)	$ 0.00
Loss per share - basic and diluted (in dollars per share)	$ (0.44)
Dividends declared per common share (in dollars per share)	$ 0.7257