Discontinued Operations - Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 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	$ 3,695
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
Loss on disposition and assets held for sale			(1,815)
Income before taxes			1,600
Benefit from income taxes			2,095
Income from discontinued operations, net of income taxes			$ 3,695