Discontinued Operations - Deferred Tax Assets (Details) - Cole Capital [Member] - Held-for-sale of Disposed of by Sale [Member] - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets	$ (1,590)	$ (7,858)
Accrued compensation	1,253	6,163
Fixed assets	(1,568)	(3,155)
Product development costs	1,680	11,668
Equity-based compensation	4,772	4,249
Other	555	1,227
Total net deferred tax asset	5,102	12,294
Less: valuation allowance	(6,165)	0
Net deferred tax (liability) asset	$ 1,063
Net deferred tax (liability) asset		$ 12,294