Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows From Operating Activities
Net income (loss)	$ (11,330)	$ 28,786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	98,876	90,919
Impairment charge	4,101	0
Amortization of non-cash items within interest expense	4,233	4,147
Amortization of acquired above- and below-market leases, net	(2,274)	(4,098)
Amortization of acquired below-market ground leases	3,916	3,916
Straight-lining of rental revenue	(5,483)	(8,607)
Equity based compensation	14,670	11,745
Settlement of derivative contract	(20,281)	0
Loss on early extinguishment of debt	86	0
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Security deposits	20,570	(25,420)
Tenant and other receivables	(4,378)	(1,827)
Deferred leasing costs	(7,508)	(10,892)
Prepaid expenses and other assets	(2,657)	993
Accounts payable and accrued expenses	(9,099)	(4,430)
Deferred revenue and other liabilities	(9,019)	4,048
Net cash provided by operating activities	74,423	89,280
Cash Flows From Investing Activities
Short-term investments	0	250,000
Development costs	(1,336)	0
Additions to building and improvements	(78,377)	(130,648)
Net cash (used in) provided by investing activities	(79,713)	119,352
Cash Flows From Financing Activities
Repayment of mortgage notes payable	(1,950)	(1,877)
Proceeds from unsecured senior notes	175,000	0
Repayment of unsecured term loan	(50,000)	0
Proceeds from unsecured term loan	175,000	0
Proceeds from unsecured revolving credit facility	550,000	0
Deferred financing costs	(3,585)	0
Repurchases of common shares	(114,605)	0
Private perpetual preferred unit distributions	(2,097)	(468)
Dividends paid to common stockholders	(37,181)	(37,191)
Distributions paid to non-controlling interests in the operating partnership	(25,041)	(26,531)
Net cash provided by (used in) financing activities	665,541	(66,067)
Net increase in cash and cash equivalents and restricted cash	660,251	142,565
Cash and cash equivalents and restricted cash—beginning of period	271,597	270,813
Cash and cash equivalents and restricted cash—end of period	931,848	413,378
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	233,946	204,981
Restricted cash at beginning of period	37,651	65,832
Cash and cash equivalents at end of period	872,970	375,335
Restricted cash at end of period	58,878	38,043
Cash and cash equivalents and restricted cash	931,848	413,378
Supplemental disclosures of cash flow information:
Cash paid for interest	37,736	38,363
Cash paid for income taxes	910	1,441
Non-cash investing and financing activities:
Building and improvements included in accounts payable and accrued expenses	64,175	74,887
Write-off of fully depreciated assets	33,261	11,123
Derivative instruments at fair values included in accounts payable and accrued expenses	11,629	22,895
Conversion of operating partnership units and Class B shares to Class A shares	21,517	8,858
Issuance of Series 2019 private perpetual preferred in exchange for common shares	789	0
Right of use assets	0	29,452
Ground lease liabilities	$ 0	$ 29,452