CONSOLIDATED STATEMENTS OF CASH FLOWS - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES
Net Income	$ 85,727	$ 71,196
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	93,925	85,673
Stock-based compensation expense	5,840	5,033
Gain on casualties and involuntary conversion on real estate assets	0	(161)
Changes in operating assets and liabilities:
Accrued income and other assets	(2,688)	944
Accounts payable, accrued expenses and prepaid rent	57,099	15,642
Other	1,263	1,280
NET CASH PROVIDED BY OPERATING ACTIVITIES	241,166	179,607
INVESTING ACTIVITIES
Development and value-add properties	(189,955)	(129,997)
Purchases of real estate	(104,006)	(6,231)
Real estate improvements	(26,749)	(25,536)
Leasing commissions	(22,791)	(12,741)
Proceeds from casualties and involuntary conversion on real estate assets	0	242
Repayments on mortgage loans receivable	0	21
Changes in accrued development costs	22,130	(1,901)
Changes in other assets and other liabilities	856	(13,539)
NET CASH USED IN INVESTING ACTIVITIES	(320,515)	(189,682)
FINANCING ACTIVITIES
Proceeds from unsecured bank credit facilities	316,893	423,270
Repayments on unsecured bank credit facilities	(380,877)	(458,506)
Proceeds from Unsecured Debt	175,000	100,000
Repayments of Unsecured Debt	(40,000)	(30,000)
Repayments on secured debt	(43,591)	(6,733)
Debt issuance costs	(2,647)	(596)
Distributions paid to stockholders (not including dividends accrued)	(95,240)	(88,558)
Proceeds from common stock offerings	154,371	75,743
Other	(4,334)	(4,750)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	79,575	9,870
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	226	(205)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	21	224
CASH AND CASH EQUIVALENTS AT END OF PERIOD	247	19
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest, net of amounts capitalized of $6,686 and $7,562 for 2021 and 2020, respectively	21,599	24,220
Cash paid for operating lease liabilities	1,133	1,099
Interest capitalized	6,686	7,562
NON-CASH OPERATING ACTIVITY
Operating lease liabilities arising from obtaining right of use assets	$ 13,056	$ 495