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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 33,383	$ 19,316	$ 58,731	$ 84,354
Other comprehensive income (loss):
Income (loss) on interest rate swaps	1,432	(2,009)	13,582	(32,200)
Other comprehensive income (loss)	1,432	(2,009)	13,582	(32,200)
Comprehensive income	34,815	17,307	72,313	52,154
Income attributable to noncontrolling interest after preferred stock dividends	(733)	(407)	(1,206)	(2,005)
Other comprehensive (income) loss attributable to noncontrolling interest	(31)	32	(299)	789
Comprehensive income attributable to STAG Industrial, Inc.	$ 34,051	$ 16,932	$ 70,808	$ 50,938

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