Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 9,158	$ 5,999	$ 1,689
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	7,792	1,554	893
Amortization of discounts/premiums on debt	227	236	155
Amortization of net origination fees related to notes receivable	(16)	(3)	(12)
Amortization of below market leases		(72)	(187)
Stock based compensation	1,392	1,224	942
Loss on disposition of assets	200		2
Bad debt expense	300	150
Changes in operating assets and liabilities:
(Increase) in accounts receivable	(1,105)	(3,628)	(77)
(Increase) decrease in interest receivable	(331)	(79)	8
(Increase) in other assets	(892)	(306)	(41)
Decrease (increase) in inventory	257	(34)	(249)
Increase in accrued interest payable	1,655	856	443
(Decrease) increase in accrued expenses	(15,307)	2,598	208
(Decrease) increase in deferred revenue	(2,164)	(3,829)	3,446
(Decrease) Increase in accrued property taxes	(237)	375	475
Net cash provided by operating activities	929	5,041	7,695
CASH FLOWS FROM INVESTING ACTIVITIES
Real estate acquisitions	(206,166)	(131,776)	(109,309)
Real estate improvements	(21,576)	(5,670)	(7,574)
Principal receipts on notes receivable		50
Issuance of notes receivable	(6,570)		(2,830)
Origination fees on notes receivable			50
Casualty loss insurance recovery	205
Payment of direct costs related to note receivable			(27)
Net cash used in investing activities	(234,107)	(137,396)	(119,690)
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowings from mortgage notes payable	212,190	207,387	82,475
Repayments on mortgage notes payable	(81,219)	(84,750)	(9,128)
Common stock repurchased	(10,000)		(21)
Proceeds from underwritten public offering		33,276	35,112
Proceeds from issuance of Series B Participating Preferred Stock	144,523
Proceeds from ATM offering		11,110
Payment of offering costs	(573)	(423)	(781)
Payment of debt issuance costs	(1,293)	(1,116)	(239)
Dividends on common stock	(14,688)	(6,600)	(4,428)
Distributions on Series A preferred units	(2,915)
Dividends on Series B participating preferred stock	(3,346)
Refund of outstanding debt			300
Distributions to non-controlling interests in operating partnership	(3,131)	(2,877)	(1,517)
Net cash provided by financing activities	239,548	156,007	101,773
NET INCREASE (DECREASE) IN CASH	6,370	23,652	(10,222)
CASH, BEGINNING OF PERIOD	47,166	23,514	33,736
CASH, END OF PERIOD	53,536	47,166	23,514
Cash paid during period for interest	11,827	8,865	4,020
Cash paid during period for taxes			10
SUPPLEMENTAL NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Deferred offering costs amortized through equity in the period	420	565
Additions to real estate improvements included in accrued expenses	1,375	956	429
Issuance of equity and contributions from redeemable non-controlling interests and non-controlling interest in operating partnership in conjunction with acquisitions	181,509	146,592	34,388
Below market lease acquisitions		29	230
Other assets acquired in business combination and asset acquisitions	1,759		110
Accounts receivable acquired in acquisitions	896		107
Property tax liability assumed in acquisitions	596	86	48
Deferred financing costs included in accrued expenses	16	54	3
Offering costs included in accrued expenses	13	90
Common stock
SUPPLEMENTAL NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Dividends payable	4,243	2,212	$ 2,060
Common Unit Holders
SUPPLEMENTAL NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Dividends payable	604	726
Preferred Units
SUPPLEMENTAL NON-CASH INVESTING AND FINANCING TRANSACTIONS:
Distibutions payable, Series A preferred units	$ 3,510	$ 2,915