Organization and Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Supplemental Cash Flow Information

Supplemental cash flow information for the six months ended June 30, 2013 and 2012 is as follows:

	Six months ended
	June 30,
	2013			2012
Interest paid, including interest capitalized	$	25,009		$	25,644
Income tax payments, net		1,074			70
Non-cash investing and financing activities:
Dividends and distributions payable		18,066			13,563
Conversions of redeemable common units		—			591
Common stock 401k matching contribution		670			639
Construction and property capital expenditure cost accruals, decrease (increase)		(3,521	)		6,440
Adjustments to equity related to redeemable common units, net		128			(737	)