Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Base rent	$ 71,573	$ 69,204
Recoveries from tenants	33,305	31,689
Other revenues	2,436	1,194
Total revenues	107,314	102,087
Expenses:
Property operating costs	31,493	30,095
Real estate taxes and insurance	3,976	3,467
Depreciation and amortization	25,027	23,269
General and administrative	4,343	4,240
Other expenses	7,253	873
Total expenses	72,092	61,944
Operating income	35,222	40,143
Interest income	11	68
Interest:
Expense incurred	(8,258)	(7,824)
Amortization of deferred financing costs	(642)	(743)
Net income	26,333	31,644
Net loss (income) attributable to redeemable noncontrolling interests – operating partnership	(3,719)	(4,788)
Net (loss) income attributable to controlling interests	22,614	26,856
Preferred stock dividends	(6,811)	(6,811)
Net (loss) income attributable to common shares	15,803	20,045
Earnings per share – basic:
Net income attributable to common shares	$ 0.24	$ 0.30
Weighted average common shares outstanding	65,506,028	65,348,269
Earnings per share – diluted:
Net income attributable to common shares	$ 0.24	$ 0.30
Weighted average common shares outstanding	66,456,271	65,823,921
Dividends declared per common share	$ 0.42	$ 0.35
Earnings per unit – diluted:
Weighted average common units outstanding	80,926,265	80,956,206
DuPont Fabros Technology, L.P. [Member]
Revenues:
Base rent	71,573	69,204
Recoveries from tenants	33,305	31,689
Other revenues	2,436	1,194
Total revenues	107,314	102,087
Expenses:
Property operating costs	31,493	30,095
Real estate taxes and insurance	3,976	3,467
Depreciation and amortization	25,027	23,269
General and administrative	4,343	4,240
Other expenses	7,253	873
Total expenses	72,092	61,944
Operating income	35,222	40,143
Interest income	11	68
Interest:
Expense incurred	(8,258)	(7,824)
Amortization of deferred financing costs	(642)	(743)
Net income	26,333	31,644
Preferred stock dividends	(6,811)	(6,811)
Net income attributable to common units	$ 19,522	$ 24,833
Earnings per unit – basic:
Net income attributable to common units	$ 0.24	$ 0.30
Weighted average common units outstanding	80,926,265	80,956,206
Earnings per unit – diluted:
Net income attributable to common units	$ 0.24	$ 0.30
Weighted Average Limited Partnership Units Outstanding, Diluted	81,876,508	81,431,858
Distributions declared per unit	$ 0.42	$ 0.35