Shareholders' Equity Schedule of Additional Paid-In Capital (Tables)

9 Months Ended

Sep. 30, 2013

Additional Paid in Capital [Abstract]

Schedule of Additional Paid in Capital [Table Text Block]

Additional Paid-In Capital

The following table presents a rollforward of the Company's changes in additional paid-in capital since December 31, 2012:

	2013
Balance as of January 1, 2013	$	759,214
Common stock issuances:
DRIP issuances	5,401
ATM issuances	1,954
Incentive plans	147
Adjustments related to tax withholding for share-based compensation	(545		)
Common stock repurchases	(5,956		)
Amortization of restricted stock, net of additional grants	1,736
Capitalized expenses	(89		)
Balance as of September 30, 2013	$	761,862