Operating Leases (Tables)

12 Months Ended

Dec. 31, 2011

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

The future minimum rental income from Piedmont’s investment in real estate assets under non-cancelable operating leases, excluding industrial properties and unconsolidated joint ventures, as of December 31, 2011, is presented below (in thousands):

Years ending December 31:
2012	$	385,071
2013	372,971
2014	326,157
2015	311,957
2016	272,892
Thereafter	1,262,099
Total	$	2,931,147