CONSOLIDATED STATEMENTS OF CASH FLOWS - Unaudited (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
OPERATING ACTIVITIES
Net Income	$ 13,605	$ 10,517
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization from continuing operations	31,381	28,204
Depreciation and amortization from discontinued operations	176	149
Stock-based compensation expense	2,033	1,382
Changes in operating assets and liabilities:
Accrued income and other assets	1,573	1,090
Accounts payable, accrued expenses and prepaid rent	(5,020)	(965)
Other	(2,187)	(91)
NET CASH PROVIDED BY OPERATING ACTIVITIES	41,561	40,286
INVESTING ACTIVITIES
Real estate development	(24,695)	(11,137)
Purchases of real estate	(3,475)	0
Real estate improvements	(9,398)	(10,645)
Proceeds from sales of real estate investments	7,399	0
Changes in accrued development costs	(2,699)	661
Changes in other assets and other liabilities	(4,767)	(3,593)
NET CASH USED IN INVESTING ACTIVITIES	(37,635)	(24,714)
FINANCING ACTIVITIES
Proceeds from bank borrowings	143,560	135,491
Repayments on bank borrowings	(177,131)	(118,040)
Proceeds from mortgage notes payable	54,000	65,000
Principal payments on mortgage notes payable	(58,201)	(69,399)
Debt issuance costs	(821)	(619)
Distributions paid to stockholders	(29,717)	(27,922)
Proceeds from common stock offerings	64,202	0
Proceeds from exercise of stock options	108	103
Proceeds from dividend reinvestment plan	118	121
Other	(100)	(344)
NET CASH USED IN FINANCING ACTIVITIES	(3,982)	(15,609)
DECREASE IN CASH AND CASH EQUIVALENTS	(56)	(37)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	174	137
CASH AND CASH EQUIVALENTS AT END OF PERIOD	118	100
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest, net of amount capitalized of $2,129 and $1,743 for 2012 and 2011, respectively	$ 17,938	$ 16,871