Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental Disclosure of Cash Flow Information
Cash paid for interest	$ 15,966	$ 11,074	$ 8,577
Supplemental Schedule of Non-Cash Investing and Financing Activities
Distributions declared and unpaid	3,837	2,024	1,868
Distributions reinvested	18,426	12,072	10,162
Shares tendered for redemption	1,680	1,174	20
Non-cash net liabilities assumed	11,412	4,011	5,946
Assumption of mortgage upon acquisition of property	0	0	95,260
Offering costs payable to the Advisor	4,445	3,273	943
Selling commissions, dealer manager fees and distribution and stockholder servicing fees payable to the Dealer Manager	17,696	88	3,614
Accrued capital additions	2,615	1,678	2,015
Accrued acquisition costs	2,256	3,185	0
Maintal Logistics acquisition liability	0	43,793	0
Operating lease liability	$ 1,583	$ 0	$ 0