Debt and Credit Agreements - Schedule of Components of Note Purchase Agreements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Debt Disclosure [Abstract]
Notes	$ 17,000	$ 0
Interest Converted to Notes	440
Deferred Issuance Costs, Borrowings	(1,890)
Add: Interest converted to Notes	(1,662)
Issuance Costs Associated with Warrants, Borrowings	(3,858)
Proceeds from issuance costs associated with warrants	228
Repayments	444
Less: Issuance costs associated with Warrants	(3,414)
Total Debt, net of deferred issuance costs	11,692
Amortization	672
Total Debt, net of deferred issuance costs	12,364
Short term debt obligations	6,000		$ 0
Long term debt obligations, net	$ 6,364		$ 0