Consolidated Statement of Equity - 6 months ended Jun. 30, 2018 - USD ($)	Total	Redeemable Common Stock [Member]	Additional Paid-in Capital [Member]	Distributions [Member]	Accumulated Deficit [Member]	Strategic Storage Growth Trust, Inc. Equity [Member]	Noncontrolling Interests in our Operating Partnership [Member]	Preferred Equity [Member]	Common Stock Class A [Member]
Beginning Balance at Dec. 31, 2017	$ 60,255,483		$ 68,799,264	$ (1,379,950)	$ (6,233,945)	$ 61,194,317	$ (938,834)		$ 8,948
Beginning Balance, shares at Dec. 31, 2017									8,948,551
Gross proceeds from issuance of common stock	$ 16,239,578		16,237,790			16,239,578			$ 1,788
Gross proceeds from issuance of common stock, shares	0								1,787,597
Offering costs	$ (1,492,849)		(1,492,849)			(1,492,849)
Changes to redeemable common stock	(1,166,710)	$ 1,166,710	(1,166,710)			(1,166,710)
Distributions	(3,157,010)			(3,157,010)		(3,157,010)
Distributions to noncontrolling interests	(7,856)						(7,856)
Issuance of shares for distribution reinvestment plan	1,166,710		1,166,580			1,166,710			$ 130
Issuance of shares for distribution reinvestment plan (in shares)									130,111
Issuance of restricted stock	8					8			$ 8
Issuance of restricted stock (in shares)									7,500
Stock based compensation expense	968		968			968
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(6,807,440)				(6,807,440)	(6,807,440)
Net loss attributable to the noncontrolling interests	(16,962)						(16,962)
Ending Balance at Jun. 30, 2018	65,013,920		$ 83,545,043	$ (4,536,960)	$ (13,041,385)	$ 65,977,572	$ (963,652)		$ 10,874
Ending Balance, shares at Jun. 30, 2018									10,873,759
Beginning Balance at Dec. 31, 2017	303,844	303,844
Distributions to preferred unitholders in our Operating Partnership								$ (3,669)
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.								3,669
Issuance of preferred equity in our Operating Partnership								610,000
Accretion of non-cash preferred equity issuance costs								637
Ending Balance at Jun. 30, 2018	$ 1,470,554	$ 1,470,554						$ 610,637