Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flow from operating activities
Net income	$ 26,333	$ 31,644
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	25,027	23,269
Straight line rent	3,783	711
Amortization of deferred financing costs	(642)	(743)
Amortization of lease contracts above and below market value	(593)	(599)
Compensation paid with Company common shares	5,290	1,593
Changes in operating assets and liabilities
Rents and other receivables	(3,599)	(979)
Deferred costs	(1,474)	(52)
Prepaid expenses and other assets	(2,052)	(5,933)
Accounts payable and accrued liabilities	1,916	(1,191)
Accrued interest payable	(8,816)	(8,012)
Prepaid rents and other liabilities	2,635	3,297
Net cash provided by operating activities	49,092	44,491
Cash flow from investing activities
Investments in real estate – development	(57,584)	(80,159)
Interest capitalized for real estate under development	(2,856)	(2,965)
Improvements to real estate	(574)	(425)
Additions to non-real estate property	(176)	(220)
Net cash used in investing activities	(61,190)	(83,769)
Line of credit:
Proceeds	90,000	0
Unsecured term loan:
Proceeds	0	96,000
Payments of financing costs	0	(96)
Equity compensation (payments) proceeds	7,489	(3,457)
Payments for Repurchase of Common Stock	(31,912)	0
Dividends and distributions:
Common shares	(27,745)	(16,301)
Preferred shares	(6,811)	(6,811)
Redeemable noncontrolling interests – operating partnership	(6,484)	(3,918)
Net cash provided by financing activities	9,559	72,331
Net increase (decrease) in cash and cash equivalents	(2,539)	33,053
Cash and cash equivalents, beginning	29,598	38,733
Cash and cash equivalents, ending	27,059	71,786
Supplemental information:
Cash paid for interest	19,930	18,802
Deferred financing costs capitalized for real estate under development	231	170
Construction costs payable capitalized for real estate under development	25,482	25,489
Redemption of operating partnership units	598	2,100
Adjustments to redeemable noncontrolling interests – operating partnership	5,878	9,334
DuPont Fabros Technology, L.P. [Member]
Cash flow from operating activities
Net income	26,333	31,644
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	25,027	23,269
Straight line rent	3,783	711
Amortization of deferred financing costs	(642)	(743)
Amortization of lease contracts above and below market value	(593)	(599)
Compensation paid with Company common shares	5,290	1,593
Changes in operating assets and liabilities
Rents and other receivables	(3,599)	(979)
Deferred costs	(1,474)	(52)
Prepaid expenses and other assets	(2,052)	(5,933)
Accounts payable and accrued liabilities	1,916	(1,190)
Accrued interest payable	(8,816)	(8,012)
Prepaid rents and other liabilities	2,635	3,297
Net cash provided by operating activities	49,092	44,492
Cash flow from investing activities
Investments in real estate – development	(57,584)	(80,159)
Interest capitalized for real estate under development	(2,856)	(2,965)
Improvements to real estate	(574)	(425)
Additions to non-real estate property	(176)	(220)
Net cash used in investing activities	(61,190)	(83,769)
Line of credit:
Proceeds	90,000	0
Unsecured term loan:
Proceeds	0	96,000
Payments of financing costs	0	(96)
Equity compensation (payments) proceeds	7,489	(3,457)
Payments for Repurchase of Common Stock	(31,912)	0
Distributions	(41,040)	(27,030)
Dividends and distributions:
Net cash provided by financing activities	9,559	72,331
Net increase (decrease) in cash and cash equivalents	(2,539)	33,054
Cash and cash equivalents, beginning	25,380	34,514
Cash and cash equivalents, ending	22,841	67,568
Supplemental information:
Cash paid for interest	19,930	18,802
Deferred financing costs capitalized for real estate under development	231	170
Construction costs payable capitalized for real estate under development	25,482	25,489
Redemption of operating partnership units	598	2,100
Adjustments to redeemable noncontrolling interests – operating partnership	$ (8,635)	$ (4,547)