Statements of Operations and Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013 Historical Predecessor [Member]
Revenues:
Rental	$ 40,579	$ 33,806
Recoveries from customers	3,691	2,866
Cloud and managed services	4,231	4,110
Other	442	716
Total revenues	48,943	41,498
Operating Expenses:
Property operating costs	16,223	14,408
Real estate taxes and insurance	1,218	1,113
Depreciation and amortization	13,247	10,815
General and administrative	10,778	9,594
Transaction costs	64
Total operating expenses	41,530	35,930
Operating income	7,413	5,568
Other income and expenses:
Interest income	8	6
Interest expense	(2,065)	(6,550)
Other (expense) income, net		(1,098)
Income (loss) before taxes	5,356	(2,074)
Tax expense of taxable REIT subsidiaries	(28)
Net income (loss)	5,328	(2,074)
Net income attributable to noncontrolling interests	(1,130)
Net income (loss) attributable to QTS Realty Trust, Inc	4,198	(2,074)
Unrealized gain on swap	105	72
Comprehensive income (loss)	$ 4,303	$ (2,002)
Net income per share attributable to common shares:
Basic	$ 0.14
Diluted	$ 0.14
Weighted average common shares outstanding:
Basic	29,016,774
Diluted	36,889,474