Related-Party Transactions and Arrangements (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2012
Advisors
Dec. 31, 2011
Advisors
Jun. 30, 2012
Advisors
Maximum
Single tenant properties
Jun. 30, 2012
Advisors
Maximum
Multi-tenant properties
Jun. 30, 2012
Acquisition and advisory fees and expenses
Advisors
Jun. 30, 2011
Acquisition and advisory fees and expenses
Advisors
Jun. 30, 2012
Acquisition and advisory fees and expenses
Advisors
Jun. 30, 2011
Acquisition and advisory fees and expenses
Advisors
Jun. 30, 2012
Acquisition and advisory fees and expenses
Advisors
Maximum
Jun. 30, 2012
Acquisition and advisory fees and expenses
Advisors
Maximum
Contract purchase price of each asset
Jun. 30, 2012
Asset management fees and expenses
Advisors
Jun. 30, 2011
Asset management fees and expenses
Advisors
Jun. 30, 2012
Asset management fees and expenses
Advisors
Jun. 30, 2011
Asset management fees and expenses
Advisors
Jun. 30, 2012
Annualized asset management fees and expenses
Advisors
Jun. 30, 2012
Property management and leasing fees and expense
Advisors
Jun. 30, 2011
Property management and leasing fees and expense
Advisors
Jun. 30, 2012
Property management and leasing fees and expense
Advisors
Jun. 30, 2011
Property management and leasing fees and expense
Advisors
Jun. 30, 2012
Property management and leasing fees and expense
Cole realty advisors, inc.
Maximum
Gross revenue for single-tenant properties
Jun. 30, 2012
Property management and leasing fees and expense
Cole realty advisors, inc.
Maximum
Gross revenue for multi-tenant properties
Jun. 30, 2012
Operating expenses
Advisors
Jun. 30, 2011
Operating expenses
Advisors
Jun. 30, 2012
Operating expenses
Advisors
Jun. 30, 2011
Operating expenses
Advisors
Jun. 30, 2012
Financing coordination fees
Advisors
Jun. 30, 2011
Financing coordination fees
Advisors
Jun. 30, 2012
Financing coordination fees
Advisors
Jun. 30, 2011
Financing coordination fees
Advisors
Jun. 30, 2012
Property sales commission
Advisors
Contract sale price of each property
Gross revenue for single-tenant properties
Jun. 30, 2012
Property portfolio
Advisors
Maximum
Jun. 30, 2012
Remaining net sale proceeds
Advisors
Jun. 30, 2012
Performance fee
Advisors
Jun. 30, 2012
Performance fee
Advisors
Listing commission
Jun. 30, 2012
Brokerage commission fee
Advisors
Maximum
Contract sale price of each property
Related Party Transaction [Line Items]                                                                          
Acquisition and advisory fee                     4.00% 2.00%                                                  
Asset Based Related Party Fee Percent                                 0.25%                                        
Property and asset management fees percent                                           2.00% 4.00%                            
Operating expense reimbursement percent         2.00%                                                                
Operating expense reimbursement percent of net income           25.00%                                                              
Finance coordination fee percent                                                       1.00%   1.00%              
Related party transaction, expenses from transactions with related party             $ 0 $ 1,380 $ 12 $ 1,823     $ 2,305 $ 2,141 $ 4,598 $ 4,299   $ 1,894 $ 1,865 $ 4,197 $ 3,969     $ 334 $ 355 $ 789 $ 788 $ 170 $ 970 $ 170 $ 1,081            
Commissions performance and other fees percent                                                               2.00% 6.00% 10.00% 10.00% 10.00% 50.00%
Cumulative noncompounded annual return     8.00%                                                                    
Due to affiliate $ 1,319 $ 1,069 $ 1,300 $ 1,100