Related-Party Transactions and Arrangements (Details) - USD ($) | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015 |
Related Party Transaction [Line Items] | | | | | |
Distribution and stockholder fees payable | $ 130,000 | | $ 130,000 | | |
Due to affiliates | $ 1,290,000 | | $ 1,290,000 | | $ 1,510,000 |
Average invested assets between $0 to $2 billion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Annualized rate percentage paid on average invested asset | 0.75% | | 0.75% | | |
Average invested assets between $2 billion to $4 billion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Annualized rate percentage paid on average invested asset | 0.70% | | 0.70% | | |
Average invested assets over $4 bilion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Annualized rate percentage paid on average invested asset | 0.65% | | 0.65% | | |
Minimum | Average invested assets between $0 to $2 billion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Average invested assets | $ 0 | | $ 0 | | |
Minimum | Average invested assets between $2 billion to $4 billion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Average invested assets | 2,000,000,000 | | 2,000,000,000 | | |
Minimum | Average invested assets over $4 bilion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Average invested assets | 4,000,000,000 | | 4,000,000,000 | | |
Maximum | Average invested assets between $0 to $2 billion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Average invested assets | 2,000,000,000 | | 2,000,000,000 | | |
Maximum | Average invested assets between $2 billion to $4 billion | | | | | |
Related Party Transaction [Line Items] | | | | | |
Average invested assets | $ 4,000,000,000 | | $ 4,000,000,000 | | |
Dealer manager commission reallowed | Selling commissions reallowed by CCC | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions percentage on stock sales and related dealer manager fees | 100.00% | | 100.00% | | |
Advisors | | | | | |
Related Party Transaction [Line Items] | | | | | |
Cumulative noncompounded annual return | 8.00% | | 8.00% | | |
Due to affiliates | $ 1,300,000 | | $ 1,300,000 | | $ 1,500,000 |
Advisors | Minimum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Operating expense reimbursement percentage | 2.00% | | 2.00% | | |
Operating expense reimbursement percentage of net income | 25.00% | | 25.00% | | |
Advisors | Property portfolio | Maximum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions performance and other fees percent | 6.00% | | 6.00% | | |
Advisors | Performance fee | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions performance and other fees percent | 15.00% | | 15.00% | | |
Related party transaction, expenses from transactions with related party | $ 0 | $ 0 | $ 0 | $ 0 | |
Advisors | Performance fee | Listing commission | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions performance and other fees percent | 15.00% | | 15.00% | | |
Advisors | Brokerage commission fee | Maximum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions performance and other fees percent | 50.00% | | 50.00% | | |
Advisors | Selling commissions | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | $ 4,400,000 | 2,550,000 | $ 9,392,000 | 3,752,000 | |
Advisors | Selling commissions reallowed by CCC | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | 4,400,000 | 2,550,000 | 9,392,000 | 3,752,000 | |
Advisors | Dealer manager fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | 1,677,000 | 760,000 | 3,456,000 | 1,113,000 | |
Advisors | Dealer manager fees reallowed by CCC | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | 655,000 | 337,000 | 1,404,000 | 486,000 | |
Advisors | Other organization and offering costs | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | $ 1,773,000 | 809,000 | $ 3,626,000 | 1,204,000 | |
Advisors | Other organization and offering costs | Maximum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Organization and offering expense limit percentage | 2.00% | | 2.00% | | |
Advisors | Distribution and stockholder servicing fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Distribution and servicing fee, termination of payments threshold, percentage of total gross investment | 7.00% | | 7.00% | | |
Distribution and servicing fee, termination of payments threshold, percentage gross proceeds from shares in offering | 10.00% | | 10.00% | | |
Related party transaction, expenses from transactions with related party | $ 1,000 | 0 | $ 1,000 | 0 | |
Advisors | Distribution and stockholder servicing fees reallowed by CCC | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | 1,000 | 0 | 1,000 | 0 | |
Advisors | Acquisition fees and expenses | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | $ 3,014,000 | 106,000 | $ 3,135,000 | 156,000 | |
Advisors | Acquisition fees and expenses | Maximum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Acquisition and advisory fee (percentage) | 6.00% | | 6.00% | | |
Advisors | Acquisition fees and expenses | Maximum | Contract purchase price of each asset | | | | | |
Related Party Transaction [Line Items] | | | | | |
Acquisition and advisory fee (percentage) | 2.00% | | 2.00% | | |
Advisors | Property sales commission | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | $ 0 | 0 | $ 0 | 0 | |
Advisors | Property sales commission | Contract sale price of each property | Gross revenue for single-tenant properties | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions performance and other fees percent | 1.00% | | 1.00% | | |
Advisors | Advisory fees and expenses | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | $ 2,104,000 | 1,394,000 | $ 3,948,000 | 2,641,000 | |
Advisors | Operating expenses | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | 532,000 | 412,000 | 1,082,000 | 623,000 | |
Advisors | Waived Fees and Expense Reimbursements | | | | | |
Related Party Transaction [Line Items] | | | | | |
Related party transaction, expenses from transactions with related party | | | 0 | 297,000 | |
Series C, Llc | Affiliated line of credit, Series C, LLC loan | Line of credit | Revolving credit facility | | | | | |
Related Party Transaction [Line Items] | | | | | |
Interest expense | $ 197,000 | $ 358,000 | $ 197,000 | $ 358,000 | |
Class A Common Stock | Dealer manager commission | Selling commissions | Maximum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions percentage on stock sales and related dealer manager fees | 7.00% | | 7.00% | | |
Class A Common Stock | Dealer manager | Dealer manager fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions percentage on stock sales and related dealer manager fees | 2.00% | | 2.00% | | |
Class T Common Stock | Dealer manager commission | Selling commissions | Maximum | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions percentage on stock sales and related dealer manager fees | 3.00% | | 3.00% | | |
Class T Common Stock | Dealer manager | Dealer manager fees | | | | | |
Related Party Transaction [Line Items] | | | | | |
Commissions percentage on stock sales and related dealer manager fees | 2.00% | | 2.00% | | |
Class T Common Stock | Advisors | | | | | |
Related Party Transaction [Line Items] | | | | | |
Distribution and servicing fee, percentage of NAV per share | | | 0.00022% | | |