Common Stock (Tables)

12 Months Ended

Dec. 31, 2012

Common Stock [Abstract]

Schedule of Stock by Class

The following outlines the common stock issuances pursuant to the ATM for the year ended December 31:

	2012
Shares of common stock	4,282,298
Average price per share	$	29.64
Net proceeds	126,947,000
Stock issuance costs (1)	2,145,000

⁽¹⁾ Stock issuance costs consist primarily of underwriters' fees and commissions, and legal and accounting fees.

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

The following outlines the common stock issuances pursuant to the DRIP for the years ended December 31:

	2012		2011		2010
Shares of common stock	2,101,644		3,745,896		793,759
Net proceeds	$	56,102,000	$	93,451,000	$	17,623,000