Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities:
Net income	$ 23,394	$ 17,047
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	76,301	56,056
Amortization of deferred financing costs	1,214	1,128
Amortization of lease inducements and above/below-market lease intangibles	2,530	2,550
Straight-line rental revenue/expense	(12,600)	(6,605)
Amortization of discount on unsecured senior notes	285	98
Amortization of above market assumed debt	(31)	(147)
Loss (gain) on sale of investment properties	2,563	(5,308)
Equity in income of unconsolidated entities	(57)	(57)
Distributions from unconsolidated entities	56	83
Change in fair value of derivative	(8)	169
Provision for bad debts	(81)	(840)
Non-cash share compensation	4,619	3,238
Net change in fair value of contingent consideration	(50)	(70)
Change in operating assets and liabilities:
Tenant receivables	4,186	2,958
Other assets	502	3,293
Accounts payable	(6,011)	648
Accrued expenses and other liabilities	5,501	14,567
Net cash provided by operating activities	102,313	88,808
Cash Flows from Investing Activities:
Proceeds on sales of investment properties	93,187	18,150
Acquisition of investment properties, net	(157,322)	(756,862)
Escrowed cash - acquisition deposits/earnest deposits	(2,220)	(19,577)
Capital expenditures on investment properties	(18,735)	(8,343)
Issuance of real estate loans receivable	(2,000)	(8,594)
Repayment of real estate loan receivable	10,271	1,507
Issuance of note receivable	(20,385)	0
Repayment of note receivable	0	16,423
Leasing commissions	(2,062)	(1,209)
Lease inducements	(73)	(2,063)
Net cash used in investing activities	(99,339)	(760,568)
Cash Flows from Financing Activities:
Net proceeds from sale of common shares	5,970	383,676
Proceeds from credit facility borrowings	277,000	488,000
Payment on credit facility borrowings	(143,000)	(529,000)
Proceeds from issuance of mortgage debt	0	61,000
Proceeds from issuance of senior unsecured notes	0	396,108
Principal payments on mortgage debt	(46,809)	(36,440)
Debt issuance costs	(419)	(1,065)
Dividends paid - shareholders	(84,161)	(65,529)
Distributions to noncontrolling interests - Operating Partnership	(2,448)	(1,917)
Preferred distributions paid - OP Unit holder	(342)	(519)
Contributions from noncontrolling interest	0	47
Distributions to noncontrolling interests - partially owned properties	(262)	(434)
Payments of employee taxes for withheld stock-based compensation shares	(1,701)	(2,431)
Purchase of Series A Preferred Units	0	(19,961)
Purchase of OP Units	(303)	(3,757)
Net cash provided by financing activities	3,525	667,778
Net increase (decrease) in cash and cash equivalents	6,499	(3,982)
Cash and cash equivalents, beginning of period	2,727	15,491
Cash and cash equivalents, end of period	9,226	11,509
Supplemental disclosure of cash flow information - interest paid during the period	25,730	14,876
Supplemental disclosure of noncash activity - change in fair value of interest rate swap agreements	5,619	(780)
Supplemental disclosure of noncash activity - assumed debt	0	26,379
Supplemental disclosure of noncash activity - issuance of OP Units (2017) and Series A Preferred Units in connection with acquisitions	22,651	44,978
Operating Partnership
Cash Flows from Operating Activities:
Net income	23,394	17,047
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	76,301	56,056
Amortization of deferred financing costs	1,214	1,128
Amortization of lease inducements and above/below-market lease intangibles	2,530	2,550
Straight-line rental revenue/expense	(12,600)	(6,605)
Amortization of discount on unsecured senior notes	285	98
Amortization of above market assumed debt	(31)	(147)
Loss (gain) on sale of investment properties	2,563	(5,308)
Equity in income of unconsolidated entities	(57)	(57)
Distributions from unconsolidated entities	56	83
Change in fair value of derivative	(8)	169
Provision for bad debts	(81)	(840)
Non-cash share compensation	4,619	3,238
Net change in fair value of contingent consideration	(50)	(70)
Change in operating assets and liabilities:
Tenant receivables	4,186	2,958
Other assets	502	3,293
Accounts payable	(6,011)	648
Accrued expenses and other liabilities	5,501	14,567
Net cash provided by operating activities	102,313	88,808
Cash Flows from Investing Activities:
Proceeds on sales of investment properties	93,187	18,150
Acquisition of investment properties, net	(157,322)	(756,862)
Escrowed cash - acquisition deposits/earnest deposits	(2,220)	(19,577)
Capital expenditures on investment properties	(18,735)	(8,343)
Issuance of real estate loans receivable	(2,000)	(8,594)
Repayment of real estate loan receivable	10,271	1,507
Issuance of note receivable	(20,385)	0
Repayment of note receivable	0	16,423
Leasing commissions	(2,062)	(1,209)
Lease inducements	(73)	(2,063)
Net cash used in investing activities	(99,339)	(760,568)
Cash Flows from Financing Activities:
Net proceeds from sale of common shares	5,970	383,676
Proceeds from credit facility borrowings	277,000	488,000
Payment on credit facility borrowings	(143,000)	(529,000)
Proceeds from issuance of mortgage debt	0	61,000
Proceeds from issuance of senior unsecured notes	0	396,108
Principal payments on mortgage debt	(46,809)	(36,440)
Debt issuance costs	(419)	(1,065)
Dividends paid - shareholders	(84,161)	(65,529)
Distributions to noncontrolling interests - Operating Partnership	(2,448)	(1,917)
Preferred distributions paid - OP Unit holder	(342)	(519)
Contributions from noncontrolling interest	0	47
Distributions to noncontrolling interests - partially owned properties	(262)	(434)
Payments of employee taxes for withheld stock-based compensation shares	(1,701)	(2,431)
Purchase of Series A Preferred Units	0	(19,961)
Purchase of OP Units	(303)	(3,757)
Net cash provided by financing activities	3,525	667,778
Net increase (decrease) in cash and cash equivalents	6,499	(3,982)
Cash and cash equivalents, beginning of period	2,727	15,491
Cash and cash equivalents, end of period	9,226	11,509
Supplemental disclosure of cash flow information - interest paid during the period	25,730	14,876
Supplemental disclosure of noncash activity - change in fair value of interest rate swap agreements	5,619	(780)
Supplemental disclosure of noncash activity - assumed debt	0	26,379
Supplemental disclosure of noncash activity - issuance of OP Units (2017) and Series A Preferred Units in connection with acquisitions	$ 22,651	$ 44,978