Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (9,001)	$ (6,001)	$ (12,339)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	16,765	15,540	13,502
Amortization of deferred financing costs	1,289	2,899	5,200
Amortization of deferred costs and intangible assets	1,715	2,750	3,269
Amortization of above- and below-market leases	(1,917)	(1,729)	(1,730)
Loss on extinguishment of debt	8,872
Gain on involuntary conversion	(194)
Deferred rent	1,029	311	56
Stock-based compensation	1,940	3,110	2,523
Change in fair value of interest rate caps	(208)	261	(139)
Changes in operating assets and liabilities:
Restricted cash	4,894	(2,625)	(768)
Tenant and other receivables	2,989	(2,084)	(3,009)
Prepaid expenses, other assets and deferred costs	(2,010)	(1,620)	(979)
Accounts payable and accrued liabilities	(515)	(561)	3,656
Security deposits	589	(200)	238
Other liabilities	1,019	389	(130)
Net cash provided by operating activities	27,256	10,440	9,350
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to land, buildings, and improvements	(39,877)	(20,276)	(18,162)
Insurance proceeds from involuntary conversion	226
Sale and purchase of interest rate caps	356
Cash paid in connection with acquisition of real estate		(167,380)	(103,123)
Net cash used in investing activities	(39,295)	(187,656)	(121,285)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds and costs from sale of common stock	(7)	78,685	(1,590)
(Redemption) sale of preferred stock		(145)	132
Payments of mortgage notes	(615,167)	(3,895)	(515,650)
Proceeds from mortgage notes	685,664	94,417	559,500
Dividends and distributions	(17,038)	(16,565)	(9,951)
Loan issuance and extinguishment costs	(12,325)	(4,888)	(8,291)
Net cash provided by financing activities	41,127	147,609	24,150
Net increase (decrease) in cash and cash equivalents	29,088	(29,607)	(87,785)
Cash and cash equivalents - beginning of period	7,940	37,547	125,332
Cash and cash equivalents - end of period	37,028	7,940	37,547
Supplemental cash flow information:
Cash paid for interest, net of capitalized interest of $5,531 and $2,852 in 2018 and 2017, respectively	31,055	33,614	33,536
Non-cash interest capitalized to real estate under development	1,295	920
Additions to investment in real estate included in accounts payable and accrued liabilities	$ 5,998	$ 1,528