SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 USD ($) debt_instrument shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares
Summary Of Significant Accounting Policies [Line Items]
Number of debt instruments assumed | debt_instrument	2
Fair value of debt assumed in acquisitions	$ 50,400,000
Accumulated amortization of debt issuance costs	1,700,000	$ 700,000
Amortization of debt issuance costs	1,054,000	557,000	$ 152,000
Net income (loss) attributable to noncontrolling interests	$ 0	$ 0	$ 0
Dilutive shares | shares	0	0	0
Special Units Holder
Summary Of Significant Accounting Policies [Line Items]
Net income (loss) attributable to noncontrolling interests	$ 0	$ 0	$ 0