Consolidated Statement of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Total Stockholders' Equity	Common Stock Common Stock Class T	Common Stock Common Stock Class S	Common Stock Common Stock Class D	Common Stock Common Stock Class I	Additional Paid-In Capital	Accumulated Deficit and Cumulative Distributions	Non-Controlling Interests
Beginning Balance at Dec. 31, 2018	$ 147,122	$ 147,122					$ 148,770	$ (1,729)
Beginning Balance,shares at Dec. 31, 2018				66		15
Common stock issued	85,586	85,586	$ 2	$ 17	$ 3	$ 21	85,543
Offering costs	(4,049)	(4,049)					(4,049)
Distribution reinvestments	396	396					396
Amortization of restricted stock grants	29	29					29
Net loss	(2,468)	(2,468)						(2,468)
Distributions declared on common stock (see Note 9)	(1,631)	(1,631)						(1,631)
Ending Balance at Mar. 31, 2019	224,985	224,985	2	$ 83	3	$ 36	230,689	(5,828)
Beginning Balance at Dec. 31, 2018	147,122	147,122					148,770	(1,729)
Beginning Balance,shares at Dec. 31, 2018				66		15
Net loss	(9,142)
Ending Balance at Sep. 30, 2019	555,512	551,996	10	$ 191	12	$ 89	575,662	(23,968)	$ 3,516
Beginning Balance at Mar. 31, 2019	224,985	224,985	2	83	3	36	230,689	(5,828)
Common stock issued	134,029	134,029	4	45	3	13	133,964
Offering costs	(9,593)	(9,593)					(9,593)
Distribution reinvestments	2,119	2,119		1			2,118
Amortization of restricted stock grants	21	21					21
Net loss	(3,596)	(3,578)						(3,578)	(18)
Contributions from non-controlling interests	3,129								3,129
Distributions to non-controlling interests	(24)								(24)
Distributions declared on common stock (see Note 9)	(4,404)	(4,404)						(4,404)
Ending Balance at Jun. 30, 2019	346,666	343,579	6	129	6	49	357,199	(13,810)	3,087
Common stock issued	228,579	228,579	4	61	6	40	228,468
Offering costs	(13,241)	(13,241)					(13,241)
Distribution reinvestments	3,418	3,418		1			3,417
Common stock repurchased	(181)	(181)					(181)
Net loss	(3,076)	(3,051)						(3,051)	(25)
Contributions from non-controlling interests	664								664
Distributions to non-controlling interests	(210)								(210)
Distributions declared on common stock (see Note 9)	(7,107)	(7,107)						(7,107)
Ending Balance at Sep. 30, 2019	555,512	551,996	$ 10	$ 191	$ 12	$ 89	575,662	(23,968)	3,516
Beginning Balance at Dec. 31, 2019	849,247	837,263					883,506	(46,697)	11,984
Beginning Balance,shares at Dec. 31, 2019			14	262	17	161
Common stock issued	421,659	421,659	$ 6	$ 94	$ 6	$ 89	421,464
Offering costs	(20,528)	(20,528)					(20,528)
Distribution reinvestments	8,364	8,364		2		1	8,361
Amortization of restricted stock grants	21	21					21
Common stock repurchased	(980)	(980)					(980)
Net loss (allocated to redeemable non- controlling interest)	(40,315)	(39,677)						(39,677)	(638)
Contributions from non-controlling interests	58,840								58,840
Distributions to non-controlling interests	(356)								(356)
Distributions declared on common stock (see Note 9)	(16,368)	(16,368)						(16,368)
Allocation to redeemable non- controlling interest	(302)	(302)					(302)
Ending Balance at Mar. 31, 2020	1,259,282	1,189,452	$ 20	$ 358	$ 23	$ 251	1,291,542	(102,742)	69,830
Beginning Balance at Dec. 31, 2019	849,247	837,263					883,506	(46,697)	11,984
Beginning Balance,shares at Dec. 31, 2019			14	262	17	161
Net loss	(65,898)
Allocation to redeemable non- controlling interest	(792)
Ending Balance at Sep. 30, 2020	1,376,695	1,366,098	$ 23	$ 409	$ 25	$ 313	1,533,049	(167,721)	10,597
Beginning Balance at Mar. 31, 2020	1,259,282	1,189,452	20	358	23	251	1,291,542	(102,742)	69,830
Common stock issued	95,244	95,244	2	23	1	17	95,201
Offering costs	(5,369)	(5,369)					(5,369)
Distribution reinvestments	10,463	10,463		3		2	10,458
Amortization of restricted stock grants	21	21					21
Common stock repurchased	(21,374)	(21,374)	(1)	(5)		(3)	(21,365)
Net loss (allocated to redeemable non- controlling interest)	(14,671)	(14,262)						(14,262)	(409)
Contributions from non-controlling interests	1,352								1,352
Distributions to non-controlling interests	(831)								(831)
Repurchase of non-controlling interests	(58,837)								(58,837)
Distributions declared on common stock (see Note 9)	(19,300)	(19,300)						(19,300)
Allocation to redeemable non- controlling interest	(274)	(274)					(274)
Ending Balance at Jun. 30, 2020	1,245,706	1,234,601	21	379	24	267	1,370,214	(136,304)	11,105
Common stock issued	163,399	163,399	2	29	1	46	163,321
Offering costs	(4,689)	(4,689)					(4,689)
Distribution reinvestments	10,487	10,487		3		1	10,483
Amortization of restricted stock grants	38	38					38
Common stock repurchased	(6,108)	(6,108)		(2)		(1)	(6,105)
Net loss	(10,497)
Net loss (allocated to redeemable non- controlling interest)	(10,455)	(10,316)						(10,316)	(139)
Distributions to non-controlling interests	(369)								(369)
Distributions declared on common stock (see Note 9)	(21,101)	(21,101)						(21,101)
Allocation to redeemable non- controlling interest	(213)	(213)					(213)
Ending Balance at Sep. 30, 2020	$ 1,376,695	$ 1,366,098	$ 23	$ 409	$ 25	$ 313	$ 1,533,049	$ (167,721)	$ 10,597