Organization and Business (Details) (USD $)	6 Months Ended	12 Months Ended		12 Months Ended					6 Months Ended
	Jun. 30, 2012 states	Jun. 30, 2012 states	Dec. 31, 2011	Jun. 30, 2012 Initial public offering	Jun. 28, 2011 Initial public offering	Feb. 10, 2011 Initial public offering	Feb. 10, 2011 Distribution reinvestment plan Initial public offering	Jun. 30, 2012 Consolidated properties sqft	Jun. 30, 2012 CCI OP	Jun. 30, 2012 CCI OP Maximum
Organization and business [Line Items]
General partner partnership interest percentage									99.99%
Noncontrolling interest - limited partner partnership interest percentage										0.01%
Common stock, shares authorized	490,000,000	490,000,000	490,000,000			250,000,000	50,000,000
Share price (in dollars per share)						$ 10	$ 9.50
Common stock, shares issued	6,778,129	6,778,129	1,383,441		370,727
Issuance of common stock, shares				6,800,000
Issuance of common stock	$ 53,810,093	$ 67,300,000
Offering costs and selling commissions		$ (6,800,000)
Number of owned properties (in number of properties)								3
Rentable square feet (in square feet)								227,000
Number of states in which entity owns properties (in number of states)	3	3
Percentage of rentable space leased	100.00%	100.00%