Related Party Transactions and Arrangements - Merger Related Costs Narrative (Details) - Affiliated Entity [Member] - USD ($) $ in Thousands		12 Months Ended
	Jan. 08, 2014	Dec. 31, 2014
Litigation, Merger and Other Non-Routine Transactions, Net of Insurance Recoveries [Member]
Related Party Transaction [Line Items]
Related party expenses		$ 137,778
ARCT IV Merger [Member] | Brokerage Commission On Sale of Property [Member]
Related Party Transaction [Line Items]
Fee paid to related party		$ 8,400
Cole Real Estate Investments, Inc. [Member] | Strategic and Financial Advisory Services Fee [Member]
Related Party Transaction [Line Items]
Percentage of contract purchase price		0.25%
Related party expenses		$ 14,200
Cole Real Estate Investments, Inc. [Member] | Transaction Management Support [Member]
Related Party Transaction [Line Items]
Related party expenses	$ 2,900
Multiple-tenant Spin Off [Member] | Litigation, Merger and Other Non-Routine Transactions, Net of Insurance Recoveries [Member]
Related Party Transaction [Line Items]
Related party expenses		$ 1,800