Discontinued Operations - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes	$ 0	$ 0	$ 0	$ 3,725
Cole Capital [Member] | Held-for-sale or Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Offering-related fees and reimbursements				1,027
Transaction service fees and reimbursements				334
Management fees and reimbursements				6,452
Total revenues				7,813
Cole Capital reallowed fees and commissions				602
Transaction costs				(654)
General and administrative				4,450
Total operating expenses				4,398
Operating income				3,415
Loss on disposition and assets held for sale				(1,785)
Income before taxes				1,630
Benefit from income taxes				2,095
Income from discontinued operations, net of income taxes				$ 3,725