Debt and Credit Agreements - Schedule of Components of Note Purchase Agreements (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Debt Disclosure [Abstract]
Notes	$ 17,000	$ 0	$ 0
Interest Converted to Notes	903		0
Deferred Issuance Costs, Borrowings	(2,077)
Add: Interest converted to Notes	(1,597)		0
Issuance Costs Associated with Warrants, Borrowings	(3,858)
Proceeds from issuance costs associated with warrants	480
Repayments	934
Less: Issuance costs associated with Warrants	(2,924)		0
Total Debt, net of deferred issuance costs	11,968
Amortization	1,414
Total Debt, net of deferred issuance costs	13,382		0
Short term debt obligations	7,500		0
Long term debt obligations, net	$ 5,882		$ 0