Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Base rent	$ 63,281	$ 56,641	$ 185,474	$ 165,584
Recoveries from tenants	31,687	27,759	87,073	77,573
Other revenues	1,374	1,046	3,118	3,329
Total revenues	96,342	85,446	275,665	246,486
Expenses:
Property operating costs	27,119	24,524	75,398	70,360
Real estate taxes and insurance	3,630	4,631	10,944	9,215
Depreciation and amortization	23,538	22,531	69,773	66,885
General and administrative	3,664	3,973	12,546	13,714
Other expenses	874	734	2,231	2,146
Total expenses	58,825	56,393	170,892	162,320
Operating income	37,517	29,053	104,773	84,166
Interest income	32	33	85	112
Interest:
Expense incurred	(12,048)	(11,934)	(37,490)	(36,471)
Amortization of deferred financing costs	(849)	(874)	(2,542)	(2,677)
Loss on early extinguishment of debt	(30,610)	0	(32,310)	0
Net (loss) income	(5,958)	16,278	32,516	45,130
Net loss (income) attributable to redeemable noncontrolling interests – operating partnership	2,541	(2,181)	(2,397)	(5,757)
Net (loss) income attributable to controlling interests	(3,417)	14,097	30,119	39,373
Preferred stock dividends	(6,811)	(6,811)	(20,433)	(20,241)
Net (loss) income attributable to common shares	(10,228)	7,286	9,686	19,132
Earnings per share – basic:
Net income attributable to common shares	$ (0.16)	$ 0.11	$ 0.15	$ 0.30
Weighted average common shares outstanding	64,432,010	62,994,500	64,631,772	62,820,979
Earnings per share – diluted:
Net income attributable to common shares	$ (0.16)	$ 0.11	$ 0.15	$ 0.30
Weighted average common shares outstanding	64,432,010	63,881,663	65,485,430	63,727,131
Dividends declared per common share	$ 0.25	$ 0.15	$ 0.70	$ 0.42
Earnings per unit – diluted:
Weighted average common units outstanding	80,321,840	81,826,688	80,626,882	81,724,511
DuPont Fabros Technology, L.P. [Member]
Revenues:
Base rent	63,281	56,641	185,474	165,584
Recoveries from tenants	31,687	27,759	87,073	77,573
Other revenues	1,374	1,046	3,118	3,329
Total revenues	96,342	85,446	275,665	246,486
Expenses:
Property operating costs	27,119	24,524	75,398	70,360
Real estate taxes and insurance	3,630	4,631	10,944	9,215
Depreciation and amortization	23,538	22,531	69,773	66,885
General and administrative	3,664	3,973	12,546	13,714
Other expenses	874	734	2,231	2,146
Total expenses	58,825	56,393	170,892	162,320
Operating income	37,517	29,053	104,773	84,166
Interest income	32	33	85	112
Interest:
Expense incurred	(12,048)	(11,934)	(37,490)	(36,471)
Amortization of deferred financing costs	(849)	(874)	(2,542)	(2,677)
Loss on early extinguishment of debt	(30,610)	0	(32,310)	0
Net (loss) income	(5,958)	16,278	32,516	45,130
Preferred stock dividends	(6,811)	(6,811)	(20,433)	(20,241)
Net income attributable to common units	$ (12,769)	$ 9,467	$ 12,083	$ 24,889
Earnings per unit – basic:
Net income attributable to common units	$ (0.16)	$ 0.11	$ 0.15	$ 0.30
Weighted average common units outstanding	80,321,840	81,826,688	80,626,882	81,724,511
Earnings per unit – diluted:
Net income attributable to common units	$ (0.16)	$ 0.11	$ 0.15	$ 0.30
Weighted average common units outstanding	80,321,840	82,713,851	81,480,540	82,630,663
Distributions declared per unit	$ 0.25	$ 0.15	$ 0.70	$ 0.42