Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Warrant consideration	$ 0	$ 1,080
Tax amortization benefit contingency	11,820	17,535
Working capital settlement	0	17,000
Additional consideration due seller	693	9,263
Dow settlement liability	10,000	0
Accrued compensation and benefits	8,932	6,352
Accrued rebates payable	5,027	4,701
Insurance premium financing payable	639	578
Severance	113	1,564
Deferred revenue	100	0
Other Notes Payable	5,056	0
Accrued taxes	7,848	4,598
Accrued Interest	6,321	0
Other	9,260	3,695
Total accrued and other current liabilities	$ 65,809	$ 66,366