Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Letters of Credit

As of March 31, 2013, Piedmont was subject to the following letters of credit, which reduce the total outstanding capacity under its $500 Million Unsecured Line of Credit:

Amount		Expiration of Letter of Credit (1)
$	10,000,000	July 2013
$	9,033,164	July 2013
$	382,556	July 2013

⁽¹⁾  These letter of credit agreements automatically renew for consecutive, one-year periods each anniversary, subject to the satisfaction of the credit obligation and certain other limitations.