Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows From Operating Activities
Net income	$ 8,288	$ 9,856
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	46,093	46,098
Amortization of non-cash items within interest expense	1,052	2,074
Amortization of acquired above- and below-market leases, net	(908)	(2,354)
Amortization of acquired below-market ground leases	1,958	1,958
Straight-lining of rental revenue	(8,193)	(5,404)
Equity based compensation	5,891	5,419
Loss on early extinguishment of debt	86	0
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Security deposits	(17)	(1,243)
Tenant and other receivables	2,874	7,385
Deferred leasing costs	(4,118)	(3,270)
Prepaid expenses and other assets	24,869	24,046
Accounts payable and accrued expenses	(5,261)	(5,192)
Deferred revenue and other liabilities	(7,840)	(1,471)
Net cash provided by operating activities	64,774	77,902
Cash Flows From Investing Activities
Short-term investments	0	50,000
Development costs	(811)	0
Additions to building and improvements	(39,799)	(61,163)
Net cash used in investing activities	(40,610)	(11,163)
Cash Flows From Financing Activities
Repayment of mortgage notes payable	(970)	(934)
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
Repurchases of common shares	(62,666)	0
Deferred financing costs	(3,610)	0
Private perpetual preferred unit distributions	(1,050)	(234)
Dividends paid to common stockholders	(18,987)	(18,520)
Distributions paid to non-controlling interests in the operating partnership	(12,614)	(13,188)
Net cash provided by (used in) financing activities	750,103	(32,876)
Net increase in cash and cash equivalents and restricted cash	774,267	33,863
Cash and cash equivalents and restricted cash—beginning of period	271,597	270,813
Cash and cash equivalents and restricted cash—end of period	1,045,864	304,676
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	1,008,983	242,910
Restricted cash at end of period	36,881	61,766
Cash and cash equivalents and restricted cash	1,045,864	304,676
Supplemental disclosures of cash flow information:
Cash paid for interest	17,081	20,768
Cash paid for income taxes	898	1,075
Non-cash investing and financing activities:
Building and improvements included in accounts payable and accrued expenses	78,107	82,399
Write-off of fully depreciated assets	13,932	6,126
Conversion of operating partnership units and Class B shares to Class A shares	7,562	3,282
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