CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 49,195	$ 39,441
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	64,545	50,997
Amortization of above/below market leases	(251)	(276)
Amortization of deferred financing costs	786	594
Share-based compensation	4,171	4,404
Bad debt expense	347	160
Changes in operating assets and liabilities:
Accounts receivable	3,220	(1,727)
Deferred rent receivable	(2,548)	(1,641)
Deferred leasing costs	(6,758)	(6,638)
Other assets	(8,751)	(6,499)
Accounts payable and accrued expenses	990	(2,371)
Unearned revenue, prepaid rent and other liabilities	(722)	(987)
Deferred rent payable	1,711	(492)
Net cash provided by operating activities	105,935	74,965
CASH FLOWS FROM INVESTING ACTIVITIES
Tenant improvements	(4,809)	(2,069)
Real estate improvements	(85,333)	(129,065)
Net cash used in investing activities	(90,142)	(131,134)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options	4,678	1,186
Proceeds from revolving credit facility	75,000	101,500
Payments on revolving credit facility	(269,000)	(243,750)
Proceeds from unsecured term loan	275,000	250,000
Payments of loan fees and costs	(2,410)	(2,809)
Dividends and distributions	(81,156)	(54,569)
Net cash provided by financing activities	2,112	51,558
Net change in cash and cash equivalents	17,905	(4,611)
Cash and cash equivalents, beginning of period	4,429	6,854
Cash and cash equivalents, end of period	22,334	2,243
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest, net of capitalized amounts	9,271	4,063
NON-CASH INVESTING AND FINANCING ACTIVITY
Construction costs payable capitalized to real estate	4,079	78,223
Accrual of dividends and distributions	$ 46,180	$ 28,326