Debt and Credit Agreements - Schedule of Components of Note Purchase Agreements (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Debt Disclosure [Abstract]
Notes	$ 17,000	$ 0	$ 0
Interest Converted to Notes	1,388		0
Deferred Issuance Costs, Borrowings	(2,077)
Add: Interest converted to Notes	(1,326)		0
Issuance Costs Associated with Warrants, Borrowings	(3,858)
Proceeds from issuance costs associated with warrants	751
Repayments	1,443
Less: Issuance costs associated with Warrants	(2,415)		0
Total Debt, net of deferred issuance costs	12,453
Amortization	2,194
Total Debt, net of deferred issuance costs	14,647		0
Short term debt obligations	9,000		0
Long term debt obligations, net	$ 5,647		$ 0