Discontinued Operations - Textual (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	May 31, 2015
Entity Information [Line Items]
Goodwill, Impairment Loss	$ 764,000	$ 17,593,000	$ 764,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Entity Information [Line Items]
Disposal Group, Including Discontinued Operation, Consideration				$ 17,000,000