CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 13,059	$ 10,254
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	7,788	5,972
Net amortization of debt premium and deferred financing fees	324	259
Straight line rental income	(869)	(118)
Amortization of acquired real estate leases	4,638	2,126
Amortization of deferred leasing costs	198	116
Other non-cash expenses	466	383
Equity in (earnings) losses of an investee	(45)	(37)
Change in assets and liabilities:
(Increase) decrease in restricted cash	(465)	(272)
(Increase) decrease in deferred leasing costs	(197)	(35)
(Increase) decrease in rents receivable	3,397	(1,648)
(Increase) decrease in other assets	1,859	231
Increase (decrease) in accounts payable and accrued expenses	(1,104)	(972)
Increase (decrease) in due to related persons	259	962
Cash provided by operating activities	29,308	17,221
CASH FLOWS FROM INVESTING ACTIVITIES:
Real estate acquisitions and deposits	(3,400)	(37,582)
Real estate improvements	(2,237)	(1,363)
Cash used in investing activities	(5,637)	(38,945)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of mortgage notes payable	(442)	(198)
Borrowings on unsecured revolving credit facility		75,000
Repayments on unsecured revolving credit facility	(345,500)	(38,000)
Proceeds from unsecured term loan	350,000
Financing fees	(1,964)	(3)
Distributions to common shareholders	(19,762)	(16,606)
Cash (used in) provided by financing activities	(17,668)	20,193
Increase (decrease) in cash and cash equivalents	6,003	(1,531)
Cash and cash equivalents at beginning of year	3,272	2,437
Cash and cash equivalents at end of year	9,275	906
Supplemental cash flow information
Interest paid	3,937	2,687
Income taxes paid	24	31
Non-cash financing activities
Issuance of common shares	$ 941