CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) (USD $) In Thousands, except Share data	Qualitytech, LP [Member] Partnership Units [Member] General Partner [Member]	Qualitytech, LP [Member] Partnership Units [Member] Limited Partner [Member]	Qualitytech, LP [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Dividends in Excess of Earnings [Member]	Total stockholders' Equity [Member]	Noncontrolling Interest [Member]	Total
Beginning balance at Dec. 31, 2014		$ 380,185	$ 380,185
Beginning balance at Dec. 31, 2014				294	324,917	(22,503)	302,708	77,477	380,185
Beginning balance, shares at Dec. 31, 2014	1,000	36,935,000
Beginning balance, shares at Dec. 31, 2014				29,408,000
Issuance of shares through equity award plan				2	(2)
Issuance of shares through equity award plan, shares		180,000		180,000
Net proceeds from equity offering		166,366	166,366	50	166,316		166,366		166,366
Net proceeds from equity offering, shares		5,000,000	5,000,000	5,000,000
Reclassification of noncontrolling interest to APIC upon conversion of partnership units to common stock				2	2,365		2,367	(2,367)
Reclassification of noncontrolling interest to APIC upon conversion of partnership units to common stock, shares				230,000
Equity-based compensation expense		1,307	1,307		1,059		1,059	248	1,307
Dividend to shareholders		(11,142)	(11,142)			(11,142)	(11,142)		(11,142)
Distribution to noncontrolling interests								(2,240)	(2,240)
Adjustments to noncontrolling interests					(20,470)		(20,470)	19,180	(1,290)
Partnership distribution		(2,240)	(2,240)
Adjustments to partnership interests		(1,290)	(1,290)
Net income		5,037	5,037			4,082	4,082	955	5,037
Ending balance at Mar. 31, 2015		538,223	538,223
Ending balance at Mar. 31, 2015				$ 348	$ 474,185	$ (29,563)	$ 444,970	$ 93,253	$ 538,223
Ending balance, shares at Mar. 31, 2015	1,000	42,115,000
Ending balance, shares at Mar. 31, 2015				34,818,000