Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Base rent	$ 60,483	$ 53,170
Recoveries from tenants	26,339	24,086
Other revenues	937	1,126
Total revenues	87,759	78,382
Expenses:
Property operating costs	23,512	22,363
Real estate taxes and insurance	3,641	2,171
Depreciation and amortization	23,039	21,870
General and administrative	4,550	5,236
Other expenses	772	668
Total expenses	55,514	52,308
Operating income	32,245	26,074
Interest income	37	34
Interest:
Expense incurred	(12,937)	(11,863)
Amortization of financing costs including write-offs	(2,618)	(887)
Net income	16,727	13,358
Net income attributable to redeemable noncontrolling interests – operating partnership	(1,973)	(1,570)
Net income attributable to controlling interests	14,754	11,788
Preferred stock dividends	(6,811)	(6,619)
Net income attributable to common shares	7,943	5,169
Earnings per share – basic:
Net income attributable to common shares	$ 0.12	$ 0.08
Weighted average common shares outstanding	65,089,972	62,568,547
Earnings per share – diluted:
Net income attributable to common shares	$ 0.12	$ 0.08
Weighted average common shares outstanding	65,928,717	63,548,098
Dividends declared per common share	$ 0.20	$ 0.12
Earnings per unit – diluted:
Weighted average common units outstanding	81,257,611	81,573,944
DuPont Fabros Technology, L.P. [Member]
Revenues:
Base rent	60,483	53,170
Recoveries from tenants	26,339	24,086
Other revenues	937	1,126
Total revenues	87,759	78,382
Expenses:
Property operating costs	23,512	22,363
Real estate taxes and insurance	3,641	2,171
Depreciation and amortization	23,039	21,870
General and administrative	4,550	5,236
Other expenses	772	668
Total expenses	55,514	52,308
Operating income	32,245	26,074
Interest income	37	34
Interest:
Expense incurred	(12,937)	(11,863)
Amortization of financing costs including write-offs	(2,618)	(887)
Net income	16,727	13,358
Preferred stock dividends	(6,811)	(6,619)
Net income attributable to common units	$ 9,916	$ 6,739
Earnings per unit – basic:
Net income attributable to common units	$ 0.12	$ 0.08
Weighted average common units outstanding	81,257,611	81,573,944
Earnings per unit – diluted:
Net income attributable to common units	$ 0.12	$ 0.08
Weighted average common units outstanding	82,096,356	82,553,495
Distributions declared per unit	$ 0.20	$ 0.12