CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 24,942	$ 18,756
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	46,862	37,386
Amortization of Intangible Assets	(258)	(182)
Amortization of deferred financing costs	586	1,029
Gain on real estate disposal	(36)
Share-based compensation	3,361	3,248
Bad debt expense	168	529
Changes in operating assets and liabilities:
Accounts receivable	(5,148)	(465)
Deferred rent receivable	(2,915)	(1,330)
Deferred leasing costs	(7,861)	(3,470)
Other assets	(2,408)	385
Accounts payable and accrued expenses	(1,023)	(6,430)
Unearned revenue , prepaid rent and other liabilities	5,015	5,294
Deferred rent payable	(466)	(245)
Net cash provided by operating activities	60,819	54,505
CASH FLOWS FROM INVESTING ACTIVITIES
Tenant improvements	(3,671)	(4,487)
Real estate improvements	(50,238)	(50,899)
Procees from real estate disposal	2,399
Net cash used in investing activities	(51,510)	(55,386)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options	667	407
Proceeds from revolving credit facility	37,750	43,500
Payments on revolving credit facility	(154,000)	(41,000)
Proceeds from senior unsecured term loan	150,000	100,000
Repayments of mortgage loans payable		(58,250)
Payments of loan fees and costs	(2,207)	(1,000)
Payments to net settle equity awards	(830)
Dividends and distributions	(43,809)	(36,957)
Net cash provided by financing activities	(12,429)	6,700
Net change in cash and cash equivalents	(3,120)	5,819
Cash and cash equivalents, beginning of period	10,662	5,313
Cash and cash equivalents, end of period	7,542	11,132
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest, net of capitalized amounts	2,617	1,810
NON-CASH INVESTING AND FINANCING ACTIVITY
Construction costs payable capitalized to real estate	14,439	26,700
Accrual of dividends and distributions	$ 22,467	$ 18,772