Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities
Net income	$ 41,345	$ 34,473
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	77,775	81,047
Amortization of deferred financing costs and debt premiums and discount	293	1,609
Amortization of acquired above- and below-market leases, net	(5,075)	(9,867)
Amortization of acquired below-market ground leases	3,916	3,916
Straight-lining of rental revenue	(11,876)	(9,724)
Equity based compensation	4,646	2,924
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Restricted cash	337	(2,840)
Tenant and other receivables	4,261	7,314
Deferred leasing costs	(10,528)	(21,845)
Prepaid expenses and other assets	2,566	647
Accounts payable and accrued expenses	(7,239)	(1,408)
Deferred revenue and other liabilities	(8,369)	(9,163)
Net cash provided by operating activities	92,052	77,083
Cash Flows From Investing Activities
Decrease (increase) in restricted cash for investing activities	5,077	(706)
Development costs	(450)	(346)
Additions to building and improvements	(78,656)	(62,066)
Net cash used in investing activities	(74,029)	(63,118)
Cash Flows From Financing Activities
Proceeds from mortgage notes payable	50,000	0
Repayment of mortgage notes payable	(26,215)	(140,974)
Proceeds from unsecured revolving credit facility	40,000	615,000
Repayments of unsecured revolving credit facility	(40,000)	(330,000)
Repayments of term loan and credit facility	0	(470,000)
Proceeds from senior unsecured notes	0	350,000
Deferred financing costs	(1,366)	(3,554)
Private perpetual preferred unit distributions	(468)	(468)
Dividends paid to common stockholders	(23,253)	(19,068)
Distributions paid to non-controlling interests in the operating partnership	(27,952)	(26,412)
Net cash used in financing activities	(29,254)	(25,476)
Net decrease in cash and cash equivalents	(11,231)	(11,511)
Cash and cash equivalents—beginning of period	46,685	45,732
Cash and cash equivalents—end of period	35,454	34,221
Supplemental disclosures of cash flow information:
Cash paid for interest	34,034	30,946
Cash paid for income taxes	2,058	2,709
Non-cash investing and financing activities:
Building and improvements included in accounts payable and accrued expenses	59,504	43,722
Derivative instruments at fair values included in accounts payable and accrued expenses	30,235	0
Conversion of operating partnership units and Class B shares to Class A shares	$ 15,201	$ 28,656