CONDENSED CONSOLIDATED FINANCIAL STATEMENTS STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Rental	$ 295,723	$ 230,510	$ 175,649
Recoveries from customers	29,271	22,581	19,194
Cloud and managed services	68,488	51,994	20,231
Other	8,881	5,998	2,715
Total revenues	402,363	311,083	217,789
Operating Expenses:
Property operating costs	136,488	104,355	71,518
Real estate taxes and insurance	8,840	5,869	5,116
Depreciation and amortization	124,786	85,811	58,282
General and administrative	83,286	67,783	45,283
Restructuring			1,298
Transaction and integration costs	10,906	11,282	1,018
Total operating expenses	364,306	275,100	182,515
Operating income	38,057	35,983	35,274
Other income and expenses:
Interest income	3	2	8
Interest expense	(23,159)	(21,289)	(15,308)
Other income/(expense), net	(192)	(468)	(871)
Income before taxes and loss on sale of real estate	14,709	14,228	19,103
Tax benefit of taxable REIT subsidiaries	9,976	10,065
Loss on sale of real estate		(164)
Net income	24,685	24,129	19,103
Net income attributable to noncontrolling interests	(3,160)	(3,803)	(4,031)
Net income attributable to QTS Realty Trust, Inc.	$ 21,525	$ 20,326	$ 15,072
Net income per share attributable to common shares:
Basic (in dollars per share)	$ 0.47	$ 0.54	$ 0.52
Diluted (in dollars per share)	$ 0.46	$ 0.53	$ 0.51
Weighted average common shares outstanding:
Basic (in shares)	46,205,937	37,568,109	29,054,576
Diluted (in shares)	53,962,234	45,353,170	37,133,584
Qualitytech, LP [Member]
Revenues:
Rental	$ 295,723	$ 230,510	$ 175,649
Recoveries from customers	29,271	22,581	19,194
Cloud and managed services	68,488	51,994	20,231
Other	8,881	5,998	2,715
Total revenues	402,363	311,083	217,789
Operating Expenses:
Property operating costs	136,488	104,355	71,518
Real estate taxes and insurance	8,840	5,869	5,116
Depreciation and amortization	124,786	85,811	58,282
General and administrative	83,286	67,783	45,283
Restructuring			1,298
Transaction and integration costs	10,906	11,282	1,018
Total operating expenses	364,306	275,100	182,515
Operating income	38,057	35,983	35,274
Other income and expenses:
Interest income	3	2	8
Interest expense	(23,159)	(21,289)	(15,308)
Other income/(expense), net	(192)	(468)	(871)
Income before taxes and loss on sale of real estate	14,709	14,228	19,103
Tax benefit of taxable REIT subsidiaries	9,976	10,065
Loss on sale of real estate		(164)
Net income	$ 24,685	$ 24,129	$ 19,103