STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013 Historical Predecessor [Member]	Sep. 30, 2013 Historical Predecessor [Member]
Revenues:
Rental	$ 45,448	$ 127,993	$ 37,595	$ 106,184
Recoveries from customers	6,131	13,674	3,603	9,925
Cloud and managed services	5,242	14,443	4,393	12,828
Other	1,124	2,116	429	1,521
Total revenues	57,945	158,226	46,020	130,458
Operating Expenses:
Property operating costs	20,369	53,121	15,638	44,930
Real estate taxes and insurance	1,377	3,713	1,101	3,304
Depreciation and amortization	15,210	42,274	12,136	34,197
General and administrative	11,045	33,296	10,097	29,387
Restructuring	226	1,272
Transaction costs	(195)	958
Total operating expenses	48,032	134,634	38,972	111,818
Operating income	9,913	23,592	7,048	18,640
Other income and expenses:
Interest income		8	4	17
Interest expense	(5,410)	(9,683)	(4,343)	(15,977)
Other (expense) income, net	(470)	(580)		(3,277)
Income (loss) before taxes	4,033	13,337	2,709	(597)
Tax expense of taxable REIT subsidiaries	(27)	(82)
Net income (loss)	4,006	13,255	2,709	(597)
Net income attributable to noncontrolling interests	(849)	(2,810)
Net income (loss) attributable to QTS Realty Trust, Inc	3,157	10,445	2,709	(597)
Unrealized gain on swap			8	220
Comprehensive income (loss)	$ 3,157	$ 10,445	$ 2,717	$ (377)
Net income per share attributable to common shares:
Basic	$ 0.11	$ 0.36
Diluted	$ 0.11	$ 0.36
Weighted average common shares outstanding:
Basic	29,016,774	29,006,620
Diluted	37,251,769	37,039,603