Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues [Abstract]
Rental income	$ 209,995	$ 190,286	$ 622,795	$ 564,155
Other income	1,126	453	1,493	3,904
Total revenue	211,121	190,739	624,288	568,059
Expenses
Property	42,168	38,015	126,249	114,564
General and administrative	12,173	11,978	38,380	36,758
Depreciation and amortization	75,963	72,506	224,336	219,213
Loss on impairment	0	0	888	4,967
Other expenses	563	545	1,077	1,703
Total expenses	130,867	123,044	390,930	377,205
Other income (expense)
Interest and other income	372	14	380	39
Interest expense	(31,670)	(28,705)	(97,817)	(81,498)
Debt extinguishment and modification expenses	(1,503)	(36)	(1,503)	(703)
Gain on involuntary conversion	0	3,568	1,855	9,285
Gain on the sales of rental property, net	2,196	195	57,801	23,281
Total other income (expense)	(30,605)	(24,964)	(39,284)	(49,596)
Net income	49,649	42,731	194,074	141,258
Less: income attributable to noncontrolling interest in operating partnership	1,013	875	4,035	2,992
Net income attributable to STAG Industrial, Inc.	48,636	41,856	190,039	138,266
Less: amount allocated to participating securities	42	45	128	138
Net income attributable to common stockholders	$ 48,594	$ 41,811	$ 189,911	$ 138,128
Weighted average common shares outstanding — basic	186,593	182,027	186,533	181,899
Weighted average common shares outstanding — diluted	186,840	182,297	186,837	182,173
Net income per share attributable to common stockholders — basic	$ 0.26	$ 0.23	$ 1.02	$ 0.76
Net income per share attributable to common stockholders — diluted	$ 0.26	$ 0.23	$ 1.02	$ 0.76